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1. The AEgIS Experiment

Author: R. Vaccarone, S. Lehner, C. Regenfus, Paola Scampoli, James William Storey, M. A. Subieta Vasquez, A. Gligorova, V. Lagomarsino, C. Pistillo, F. Merkt, Ruggero Caravita, S. D. Hogan, Claude Amsler, P. Nédélec, M. Špaček, Davide Trezzi, Tomoko Ariga, G. Cerchiari, Nicola Pacifico, Heidi Sandaker, E. Jordan, S. Di Domizio, J. Bremer, Rafael Ferragut, S. Mariazzi, Alexey Dudarev, Giovanni Consolati, Marco Giammarchi, Germano Bonomi, T. Huse, Ole Røhne, Jiro Kawada, L. Di Noto, S. Haider, J. H. Derking, M. Kimura, D. Krasnický, Marco Prevedelli, Fabrizio Castelli, G. Testera, Cristina Riccardi, O. Ahlén, Michael Doser, Alban Kellerbauer, Sergei Gninenko, E. Widmann, A. Knecht, Johann Zmeskal, P. Genova, Antonio Ereditato, D. Comparat, Carlo Canali, Andrea Fontana, Thomas Kaltenbacher, Simone Cialdi, S. Zavatarelli, Akitaka Ariga, Stefano Aghion, Chloé Malbrunot, V. A. Matveev, V. Petráček, Alberto Rotondi, L. V. Jørgensen, L. Cabaret, R. S. Brusa, F. Prelz, G. Nebbia, A. S. Belov, P. Bräunig, F. Moia, M. Oberthaler, A., Knecht, S., Aghion, O., Ahlén, C., Amsler, A., Ariga, T., Ariga, A. S., Belov, G., Bonomi, P., Bräunig, J., Bremer, R. S., Brusa, L., Cabaret, C., Canali, R., Caravita, F., Castelli, G., Cerchiari, S., Cialdi, D., Comparat, G., Consolati, J. H., Derking, S., Di Domizio, L., Di Noto, M., Doser, A., Dudarev, A., Ereditato, R., Ferragut, A., Fontana, P., Genova, M., Giammarchi, A., Gligorova, S. N., Gninenko, S., Haider, S. D., Hogan, T., Huse, E., Jordan, L. V., Jørgensen, T., Kaltenbacher, J., Kawada, A., Kellerbauer, M., Kimura, D., Krasnický, V., Lagomarsino, S., Lehner, C., Malbrunot, S., Mariazzi, V. A., Matveev, F., Merkt, F., Moia, G., Nebbia, P., Nédélec, M. K., Oberthaler, N., Pacifico, V., Petráček, C., Pistillo, F., Prelz, M., Prevedelli, C., Regenfu, C., Riccardi, O., Røhne, A., Rotondi, H., Sandaker, Scampoli, Paola, J., Storey, M. A., Subieta Vasquez, M., Špaček, G., Testera, D., Trezzi, R., Vaccarone, E., Widmann, S., Zavatarelli, and J., Zmeskal
Subjects: Physics, Antimatter, Nuclear and High Energy Physics, business.industry, General relativity, Gravity, Detector, Condensed Matter Physics, Gravitational acceleration, Atomic and Molecular Physics, and Optics, Nuclear physics, Antihydrogen, Gravitational interaction of antimatter, Physical and Theoretical Chemistry, Aerospace engineering, business, Beam (structure), Antihydrogen, Antimatter, Gravity
Abstract: The AEgIS experiment aims at performing the first test of the Weak Equivalence Principle of General Relativity in the antimatter sector by measuring the gravitational acceleration acting on a beam of cold antihydrogen to a precision of 1 %. The installation of the apparatus is making good progress and large parts were taken into operation. Parasitic detector tests during the beamtime in December 2012 gave essential input for an optimal moir´e deflectometer and the detector layout necessary to perform the gravity measurement.
Published: 2014
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2. Design, Procurement, Installation and Commissioning of the Cryogenic Infrastructure for a New Superconducting RF Test Facility with Beam at CERN

Author: K. Brodzinski, H Derking, L Delprat, and S. Claudet
Subjects: Superconductivity, Engineering, Large Hadron Collider, Procurement, Upgrade, Luminosity (scattering theory), Test facility, business.industry, Project commissioning, Nuclear engineering, business, Beam (structure)
Abstract: The High-Luminosity LHC project (HL–LHC), aiming at peak luminosity above 5.0 × 1034 cm −2 s −1, considers replacing the matching sections on both sides of the ATLAS and CMS experiments. To complement new focusing quadrupoles, this upgrade considers using the so-called superconducting crab cavities, never operated before with protons and therefore requiring qualification with beam. To this aim, a new cryogenic infrastructure for a superconducting RF test facility was initiated and recently installed at CERN SPS accelerator in 2018. From the early studies of heat load and design principles to the successful tests passed during late 2018, this paper describes the main cryogenic requirements for such a test facility, its design challenges, procurement, installation, and commissioning up to stable operation of the crab cavities module in superfluid helium at 2 K.
Published: 2020
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3. Commissioning and performance of the cryogenic system of the new test facility for large superconducting devices at CERN

Author: A. Perin, K. Iakovidis, J. H. Derking, T. Dupont, T. Barbe, B. D'Hulster, L. Stewart, and M. Pezzetti
Subjects: Superconductivity, Engineering, Large Hadron Collider, Test facility, Cryogenic system, Project commissioning, business.industry, Nuclear engineering, business, Accelerators and Storage Rings
Abstract: CERN has built a new test facility for large and heavy superconducting devices that will be first used for testing the Super-FRS magnets of the FAIR project being built at GSI in Germany. This paper reports on the commissioning results and performance of the cryogenic system. The cryogenic system includes a new compression station coupled to a refurbished 1.2 kW equivalent power at 4.5 K TCF200 helium refrigerator. The cryogenic system contains further a 5 m$^3$ liquid helium dewar, two liquid nitrogen cool-down / warm-up units for precooling to 80 K and warming-up the devices after the tests, and a dedicated cryogenic distribution system consisting of multiple valve boxes and transfer lines to distribute helium to the three test benches.
Published: 2019
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4. A moiré deflectometer for antimatter

Author: Markus K. Oberthaler, M. Kimura, S. Di Domizio, Marco Giammarchi, N. Pacifico, Marco Prevedelli, P. Nedelec, C. Pistillo, F. Prelz, Ruggero Caravita, Alban Kellerbauer, P. Genova, O. Ahlén, G. Nebbia, L. Cabaret, Viktor Matveev, Simone Cialdi, F. Moia, Paola Scampoli, James William Storey, M. A. Subieta Vasquez, E. Jordan, P. Bräunig, Carlo Canali, Daniel Comparat, G. Testera, T. Huse, Thomas Kaltenbacher, A. S. Belov, Sebastiano Mariazzi, R. S. Brusa, Claude Amsler, R. Vaccarone, Vojtech Petracek, Akitaka Ariga, S. N. Gninenko, Sebastian Lehner, Giovanni Cerchiari, Fabrizio Castelli, A. Knecht, C. Malbrunot, Angela Gligorova, Sandra Zavatarelli, Michael Doser, Antonio Ereditato, Giovanni Consolati, Germano Bonomi, M. Spacek, Johann Zmeskal, Adriano Fontana, D. Krasnický, Karl Berggren, Stefano Aghion, H. Derking, C. Regenfus, J. Bremer, Alexey Dudarev, Ole Røhne, A. Magnani, Tomoko Ariga, Jiro Kawada, L. Di Noto, Rafael Ferragut, S. Haider, Eberhard Widmann, V. Lagomarsino, Alberto Rotondi, L. V. Jørgensen, Heidi Sandaker, C. Riccardi, Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), AEGIS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), S., Aghion, O., Ahl?n, C., Amsler, A., Ariga, T., Ariga, A. S., Belov, K., Berggren, G., Bonomi, P., Br?unig, J., Bremer, R. S., Brusa, L., Cabaret, C., Canali, R., Caravita, F., Castelli, G., Cerchiari, S., Cialdi, D., Comparat, G., Consolati, H., Derking, S., Di Domizio, L., Di Noto, M., Doser, A., Dudarev, A., Ereditato, R., Ferragut, A., Fontana, P., Genova, M., Giammarchi, A., Gligorova, S. N., Gninenko, S., Haider, T., Huse, E., Jordan, L. V., J?rgensen, T., Kaltenbacher, J., Kawada, A., Kellerbauer, M., Kimura, A., Knecht, D., Krasnick?, V., Lagomarsino, S., Lehner, A., Magnani, C., Malbrunot, S., Mariazzi, V. A., Matveev, F., Moia, G., Nebbia, P., N?d?lec, M. K., Oberthaler, N., Pacifico, V., Petr??ek, C., Pistillo, F., Prelz, M., Prevedelli, C., Regenfu, C., Riccardi, O., R?hne, A., Rotondi, H., Sandaker, Scampoli, Paola, J., Storey, M. A., Subieta Vasquez, M., ?pa?ek, G., Testera, R., Vaccarone, E., Widmann, S., Zavatarelli, J., Zmeskal, S. Aghion, O. Ahlén, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, K. Berggren, G. Bonomi, P. Bräunig, J. Bremer, R. S. Brusa, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Haider, T. Huse, E. Jordan, L. V. Jørgensen, T. Kaltenbacher, J. Kawada, A. Kellerbauer, M. Kimura, A. Knecht, D. Krasnický, V. Lagomarsino, S. Lehner, A. Magnani, C. Malbrunot, S. Mariazzi, V. A. Matveev, F. Moia, G. Nebbia, P. Nédélec, M. K. Oberthaler, N. Pacifico, V. Petràček, C. Pistillo, F. Prelz, M. Prevedelli, C. Regenfu, C. Riccardi, O. Røhne, A. Rotondi, H. Sandaker, P. Scampoli, J. Storey, M.A. Subieta Vasquez, M. Špaček, G. Testera, R. Vaccarone, E. Widmann, S. Zavatarelli, and J. Zmeskal
Subjects: Physics::General Physics, 530 Physics, General Physics and Astronomy, Context (language use), Gravitational acceleration, 01 natural sciences, 7. Clean energy, Article, General Biochemistry, Genetics and Molecular Biology, Nuclear physics, Acceleration, 0103 physical sciences, antimatter, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Equivalence principle, 010306 general physics, Antihydrogen, Physics, Multidisciplinary, 010308 nuclear & particles physics, Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP], General Chemistry, Computational physics, Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP], Deflection (physics), gravitation, Antiproton, Antimatter, PARTICLE PHYSICS, Particle Physics - Experiment
Abstract: The precise measurement of forces is one way to obtain deep insight into the fundamental interactions present in nature. In the context of neutral antimatter, the gravitational interaction is of high interest, potentially revealing new forces that violate the weak equivalence principle. Here we report on a successful extension of a tool from atom optics—the moiré deflectometer—for a measurement of the acceleration of slow antiprotons. The setup consists of two identical transmission gratings and a spatially resolving emulsion detector for antiproton annihilations. Absolute referencing of the observed antimatter pattern with a photon pattern experiencing no deflection allows the direct inference of forces present. The concept is also straightforwardly applicable to antihydrogen measurements as pursued by the AEgIS collaboration. The combination of these very different techniques from high energy and atomic physics opens a very promising route to the direct detection of the gravitational acceleration of neutral antimatter., Measuring forces on antimatter is vital to testing our understanding of fundamental physics. Towards this aim, Aghion et al. present a method to measure the deflection of antiprotons based on an atom optical tool, the moiré deflectometer, which could be extended to future antihydrogen gravity measurements.
Published: 2014
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5. Interfacing issues in microcooling of optical detectors in space applications

Author: J. H. Derking, H. J. M. ter Brake, M. Linder, H. Rogalla, J. G. Weisend, Faculty of Science and Technology, and Energy, Materials and Systems
Subjects: Earth observation, Materials science, Conceptual design, Interfacing, Soldering, Detector, Nanotechnology, Cryogenics, Image sensor, Literature survey, Engineering physics
Abstract: Miniature Joule-Thomson coolers were developed at the University of Twente and are able to cool to 100 K with a typical cooling power of 10 to 20 mW. These coolers have a high potential for space applications in cooling small optical detectors for future earth observation and science missions. Under contract of the European Space Agency, we investigate on-chip detector cooling for the temperature range 70 K-250 K. To identify the detectors that can be cooled by a JT microcooler, a literature survey was performed. Following this survey, we selected a micro digital CMOS image sensor. A conceptual design of this cooler-sensor system is made. Among various techniques, indium soldering and silver paint are chosen for the bonding of the silicon sensor to the glass microcooler. Electrical connections from the sensor to the outside will be realized by structuring them in a thin layer of gold that is sputtered on the outside of the cooler to minimize the radiative heat load. For the electrical connections between the sensor and the structured leads, aluminum or gold bond wires will be used
Published: 2010
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6. AEgIS Experiment: Measuring the acceleration g of the earth’s gravitational field on antihydrogen beam

Author: L. Bravina, M. A. Subieta Vasquez, S. Aghion, O. Ahlén, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, G. Bonomi, P. Bräunig, J. Bremer, R. S. Brusa, L. Cabaret, M. Caccia, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, L. Dassa, J. H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Heider, S. D. Hogan, T. Huse, E. Jordan, L. V. Jørgensen, T. Kaltenbacher, J. Kawada, A. Kellerbauer, M. Kimura, A. Knecht, D. Krasnický, V. Lagomarsino, S. Mariazzi, V. A. Matveev, F. Merkt, F. Moia, G. Nebbia, P. Nédélec, M. K. Oberthaler, N. Pacifico, V. Petráček, C. Pistilo, F. Prelz, M. Prevedelli, C. Regenfus, C. Ricardi, O. Røhne, A. Rotondi, H. Sandaker, J. Storey, M. Špaček, G. Testera, D. Trezzi, R. Vaccarone, F. Villa, S. Zavatarelli, Y. Foka, S. Kabana, SCAMPOLI, PAOLA, L., Bravina, M. A., Subieta Vasquez, S., Aghion, O., Ahlén, C., Amsler, A., Ariga, T., Ariga, A. S., Belov, G., Bonomi, P., Bräunig, J., Bremer, R. S., Brusa, L., Cabaret, M., Caccia, C., Canali, R., Caravita, F., Castelli, G., Cerchiari, S., Cialdi, D., Comparat, G., Consolati, L., Dassa, J. H., Derking, S., Di Domizio, L., Di Noto, M., Doser, A., Dudarev, A., Ereditato, R., Ferragut, A., Fontana, P., Genova, M., Giammarchi, A., Gligorova, S. N., Gninenko, S., Heider, S. D., Hogan, T., Huse, E., Jordan, L. V., Jørgensen, T., Kaltenbacher, J., Kawada, A., Kellerbauer, M., Kimura, A., Knecht, D., Krasnický, V., Lagomarsino, S., Mariazzi, V. A., Matveev, F., Merkt, F., Moia, G., Nebbia, P., Nédélec, M. K., Oberthaler, N., Pacifico, V., Petráček, C., Pistilo, F., Prelz, M., Prevedelli, C., Regenfu, C., Ricardi, O., Røhne, A., Rotondi, H., Sandaker, Scampoli, Paola, J., Storey, M., Špaček, G., Testera, D., Trezzi, R., Vaccarone, F., Villa, S., Zavatarelli, Y., Foka, and S., Kabana
Published: 2014

7. Detection of Low Energy Antiproton Annihilations in a Segmented Silicon Detector

Author: O. Ahlén, R. S. Brusa, Marco Prevedelli, G. Nebbia, Massimo Caccia, V. Petráček, V. Lagomarsino, Alban Kellerbauer, Sebastiano Mariazzi, L. Di Noto, P. Genova, Patrick Nedelec, Carsten Welsch, Carlo Canali, L. Cabaret, Giovanni Cerchiari, T. Huse, Alberto Rotondi, J. Bremer, C. Regenfus, J. Harasimowicz, Ole Røhne, Heidi Sandaker, Alice Magnani, Cristina Riccardi, G. Testera, F. Prelz, Simone Cialdi, D. Krasnický, T. Kaltenbacher, S. Haider, E. Jordan, Adriano Fontana, Rafael Ferragut, M. A. Subieta Vasquez, Fabrizio Castelli, S. Di Domizio, A. S. Belov, Alexey Dudarev, N. Pacifico, Michael Doser, Daniel Comparat, A. Knecht, A. Sosa, Stefano Aghion, Sandra Zavatarelli, Marco Giammarchi, L. V. Jørgensen, P. Bräunig, Angela Gligorova, Ruggero Caravita, V. A. Matveev, S. N. Gninenko, F. Moia, G. Burghart, Giovanni Consolati, Germano Bonomi, J. H. Derking, M. Spacek, S Aghion, O Ahlén, A S Belov, G Bonomi, P Bräunig, J Bremer, R S Brusa, G Burghart, L Cabaret, M Caccia, C Canali, R Caravita, F Castelli, G Cerchiari, S Cialdi, D Comparat, G Consolati, J H Derking, S Di Domizio, L Di Noto, M Doser, A Dudarev, R Ferragut, A Fontana, P Genova, M Giammarchi, A Gligorova, S N Gninenko, S Haider, J Harasimowicz, T Huse, E Jordan, L V JØrgensen, T Kaltenbacher, A Kellerbauer, A Knecht, D Krasnický, V Lagomarsino, A Magnani, S Mariazzi, V A Matveev, F Moia, G Nebbia, P Nédélec, N Pacifico, V Petráček, F Prelz, M Prevedelli, C Regenfu, C Riccardi, O RØhne, A Rotondi, H Sandaker, A Sosa, M A Subieta Vasquez, M Špaček, G Testera, C P Welsch, S Zavatarelli, AEGIS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)
Subjects: Antiparticle, Physics::Instrumentation and Detectors, Detector modelling and simulations I (interaction of radiation with matter, Solid state detectors, Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc), 7. Clean energy, Particle detector, Nuclear physics, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Detectors and Experimental Techniques, Solid state detectors, Antihydrogen, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Instrumentation, ComputingMilieux_MISCELLANEOUS, Mathematical Physics, etc), Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc), Physics, Detector, Semiconductor detector, Antiproton Decelerator, interaction of hadrons with matter, Antiproton, Antimatter, High Energy Physics::Experiment
Abstract: The goal of the AEḡIS experiment at the Antiproton Decelerator (AD) at CERN, is to measure directly the Earth’s gravitational acceleration on antimatter by measuring the free fall of a pulsed, cold antihydrogen beam. The final position of the falling antihydrogen will be detected by a position sensitive detector. This detector will consist of an active silicon part, where the annihilations take place, followed by an emulsion part. Together, they allow to achieve 1% precision on the measurement of ḡ with about 600 reconstructed and time tagged annihilations. We present here the prospects for the development of the AEḡIS silicon position sentive detector and the results from the first beam tests on a monolithic silicon pixel sensor, along with a comparison to Monte Carlo simulations. publishedVersion
Published: 2014
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8. Measuring GBAR with emulsion detector

Author: S. N. Gninenko, Jiro Kawada, L. Di Noto, P. Genova, Alexey Dudarev, Eberhard Widmann, V. Lagomarsino, F. Prelz, V. Petráček, Giovanni Consolati, Germano Bonomi, Akitaka Ariga, Paola Scampoli, M. A. Subieta Vasquez, M. Spacek, Patrick Nedelec, Heidi Sandaker, Johann Zmeskal, O. Ahlén, A. Rotondi, Claude Amsler, Marco Prevedelli, Ole Røhne, Daniel Comparat, Giovanni Cerchiari, N. Pacifico, H. Derking, Stefano Aghion, C. Pistillo, L. V. Jørgensen, Ruggero Caravita, Adriano Fontana, Simone Cialdi, E. Jordan, M. Kimura, L. Cabaret, T. Huse, J. Bremer, A. S. Belov, Tomoko Ariga, Rafael Ferragut, Cristina Riccardi, T. Kaltenbacher, Carlo Canali, Antonio Ereditato, Sebastian Lehner, C. Regenfus, P. Bräunig, M. Oberthaler, Angela Gligorova, P. Yzombard, G. Testera, D. Krasniký, S. Haider, R. S. Brusa, Karl Berggren, Fabrizio Castelli, Alice Magnani, Michael Doser, Viktor Matveev, J. Storet, S. Di Domizio, Marco Giammarchi, Alban Kellerbauer, G. Nebbia, C. Malbrunot, Sebastiano Mariazzi, A. Knecht, S. Zavaterelli, T., Ariga, S., Aghion, O., Ahl?n, C., Amsler, A., Ariga, A. S., Belov, K., Berggren, G., Bonomi, P., Br?unig, J., Bremer, R. S., Brusa, L., Cabaret, C., Canali, R., Caravita, F., Castelli, G., Cerchiari, S., Cialdi, D., Comparat, G., Consolati, H., Derking, S., Di Domizio, L., Di Noto, M., Doser, A., Dudarev, A., Ereditato, R., Ferragut, A., Fontana, P., Genova, M., Giammarchi, A., Gligorova, S. N., Gninenko, S., Haider, T., Huse, E., Jordan, L. V., J?rgensen, T., Kaltenbacher, J., Kawada, A., Kellerbauer, M., Kimura, A., Knecht, D., Krasnik?, V., Lagomarsino, S., Lehner, A., Magnani, C., Malbrunot, S., Mariazzi, V. A., Matveev, G., Nebbia, P., N?d?lec, M. K., Oberthaler, N., Pacifico, V., Petr??ek, C., Pistillo, F., Prelz, M., Prevedelli, C., Regenfu, C., Riccardi, O., R?hne, A., Rotondi, H., Sandaker, Scampoli, Paola, J., Storet, M. A., Subieta Vasquez, M., ?pa?ek, G., Testera, E., Widmann, P., Yzombard, S., Zavaterelli, J., Zmeskal, AEGIS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Laboratoire Aimé Cotton (LAC), and École normale supérieure - Cachan (ENS Cachan)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Particle physics, Antimatter, Annihilation, Physics::Instrumentation and Detectors, Position resolution, 530 Physics, Detector, Gravitational acceleration, Vertex (geometry), gravity, Nuclear physics, particle tracking detectors, emulsion detectors, Emulsion, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Antihydrogen, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), ComputingMilieux_MISCELLANEOUS
Abstract: The motivation of the AEgIS experiment is to test the universality of free fall with antimatter. The goal is to reach a relative uncertainty of 1% for the measurement of the earth's gravitational acceleration [Formula: see text] on an antihydrogen beam. High vertex position resolution is required for a position detector. An emulsion based detector can measure the annihilation vertex of antihydrogen atoms with a resolution of 1-2 μm, which if realized in the actual experiment will enable a 1% measurement of [Formula: see text] with less than 1000 [Formula: see text] atoms. Developments and achievements on emulsion detectors for the AEgIS experiment are presented here.
Published: 2014
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9. Measuring g with Aegis, Progress and Perspectives

Author: D. Krasnick?, S. Aghion, O. Ahl?n, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, K. Berggren, G. Bonomi, P. Br?unig, J. Bremer, R. S. Brusa, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Haider, T. Huse, E. Jordan, L. V. J?rgensen, T. Kaltenbacher, J. Kawada, A. Kellerbauer, M. Kimura, A. Knecht, V. Lagomarsino, S. Lehner, A. Magnani, C. Malbrunot, S. Mariazzi, V. A. Matveev, G. Nebbia, P. N?d?lec, M. K. Oberthaler, N. Pacifico, V. Petr??ek, C. Pistillo, F. Prelz, M. Prevedelli, C. Regenfus, C. Riccardi, O. R?hne, A. Rotondi, H. Sandaker, J. Storey, M. A. Subieta Vasquez, M. ?pa?ek, G. Testera, E. Widmann, P. Yzombard, S. Zavatarelli, J. Zmeskal, SCAMPOLI, PAOLA, D., Krasnick?, S., Aghion, O., Ahl?n, C., Amsler, A., Ariga, T., Ariga, A. S., Belov, K., Berggren, G., Bonomi, P., Br?unig, J., Bremer, R. S., Brusa, L., Cabaret, C., Canali, R., Caravita, F., Castelli, G., Cerchiari, S., Cialdi, D., Comparat, G., Consolati, H., Derking, S., Di Domizio, L., Di Noto, M., Doser, A., Dudarev, A., Ereditato, R., Ferragut, A., Fontana, P., Genova, M., Giammarchi, A., Gligorova, S. N., Gninenko, S., Haider, T., Huse, E., Jordan, L. V., J?rgensen, T., Kaltenbacher, J., Kawada, A., Kellerbauer, M., Kimura, A., Knecht, V., Lagomarsino, S., Lehner, A., Magnani, C., Malbrunot, S., Mariazzi, V. A., Matveev, G., Nebbia, P., N?d?lec, M. K., Oberthaler, N., Pacifico, V., Petr??ek, C., Pistillo, F., Prelz, M., Prevedelli, C., Regenfu, C., Riccardi, O., R?hne, A., Rotondi, H., Sandaker, Scampoli, Paola, J., Storey, M. A., Subieta Vasquez, M., ?pa?ek, G., Testera, E., Widmann, P., Yzombard, S., Zavatarelli, and J., Zmeskal
Abstract: AE¯gIS experiment’s main goal is to measure the local gravitational acceleration of antihydrogen ¯g and thus perform a direct test of the weak equivalence principle with antimatter. In the first phase of the experiment the aim is to measure ¯g with 1% relative precision. This paper presents the antihydrogen production method and a description of some components of the experiment, which are necessary for the gravity measurement. Current status of the AE¯gIS experimental apparatus is presented and recent commissioning results with antiprotons are outlined. In conclusion we discuss the short-term goals of the AE¯gIS collaboration that will pave the way for the first gravity measurement in the near future.
Published: 2014

10. Comparison of Planar and 3D Silicon Pixel Sensors Used for Detection of Low Energy Antiprotons

Author: A. Gligorova, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, J. H. Derking, C. Da Via, S. Di Domizio, L. Di Noto, S. Aghion, M. Doser, A. Dudarev, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, S. N. Gninenko, S. Haider, H. Holmestad, T. Huse, A. S. Belov, E. Jordan, T. Kaltenbacher, A. Kellerbauer, A. Knecht, D. Krasnicky, V. Lagomarsino, S. Lehner, A. Magnani, C. Malbrunot, S. Mariazzi, G. Bonomi, V. A. Matveev, F. Moia, C. Nellist, G. Nebbia, P. Nedelec, M. Oberthaler, N. Pacifico, V. Petracek, F. Prelz, M. Prevedelli, P. Braunig, C. Riccardi, O. Rohne, A. Rotondi, H. Sandaker, M. A. Subieta Vasquez, M. Spacek, G. Testera, E. Widmann, P. Yzombard, S. Zavatarelli, J. Bremer, J. Zmeskal, R. S. Brusa, L. Cabaret, M. Caccia, A. Gligorova, S. Aghion, A. S. Belov, G. Bonomi, P. Braunig, J. Bremer, R. S. Brusa, L. Cabaret, M. Caccia, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, J. H. Derking, C. Da Via, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, S. N. Gninenko, S. Haider, H. Holmestad, T. Huse, E. Jordan, T. Kaltenbacher, A. Kellerbauer, A. Knecht, D. Krasnicky, V. Lagomarsino, S. Lehner, A. Magnani, C. Malbrunot, S. Mariazzi, V. A. Matveev, F. Moia, C. Nellist, G. Nebbia, P. Nedelec, M. Oberthaler, N. Pacifico, V. Petracek, F. Prelz, M. Prevedelli, C. Riccardi, O. Rohne, A. Rotondi, H. Sandaker, M. A. Subieta Vasquez, M. Spacek, G. Testera, E. Widmann, P. Yzombard, S. Zavatarelli, J. Zmeskal, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and AEGIS
Subjects: Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, Annihilation, antiproton, Silicon pixel sensor, chemistry.chemical_element, Annihilation, Gravitational acceleration, 7. Clean energy, Silicon pixel sensor, Nuclear physics, Optics, Gravitational field, antiproton, Nuclear Energy and Engineering, Electrical and Electronic Engineering, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Antihydrogen, Physics, CMOS sensor, business.industry, Detector, GRAVITATION, chemistry, Antiproton, Antimatter, High Energy Physics::Experiment, business, PARTICLE DETECTORS
Abstract: International audience; The principal aim of the AEgIS experiment at CERN is to measure the acceleration of antihydrogen due to Earth's gravitational field. This would be a test of the Weak Equivalence Principle, which states that all bodies fall with the same acceleration independently of their mass and composition. The effect of Earth's gravitational field on antimatter will be determined by measuring the deflection of the path of the antihydrogen from a straight line. The position of the antihydrogen will be found by detecting its annihilation on the surface of a silicon detector. The gravitational measurement in AEgIS will be performed with a gravity module, which includes the silicon detector, an emulsion detector and a scintillating fibre time-of-flight detector. As the experiment attempts to determine the gravitational acceleration with a precision of 1%, a position resolution better than 10 μm is required. Here we present the results of a study of antiproton annihilations in a 3D silicon pixel sensor and compare the results with a previous study using a monolithic active pixel sensor. This work is part of a larger study on different silicon sensor technologies needed for the development of a silicon position detector for the AEgIS experiment. The 3D detector together with its readout electronics have been originally designed for the ATLAS detector at the LHC. The direct annihilation of low energy antiprotons ( ~ 100 keV) takes place in the first few μm of the silicon sensor and we show that the charged products of the annihilation can be detected with the same sensor. The present study also aims to understand the signature of an antiproton annihilation event in segmented silicon detectors and compares it with a GEANT4 simulation model. These results will be used to determine the geometrical and process parameters to be adopted by the silicon annihilation detector to be installed in AEgIS.
Published: 2014
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11. Development of nuclear emulsions operating in vacuum for the AEgIS experiment

Author: Akitaka Ariga, A. Knecht, Sandra Zavatarelli, L. V. Jørgensen, V. Lagomarsino, E. Wildmann, A. Fontana, R. S. Brusa, Sebastiano Mariazzi, Sergei Gninenko, J. Bremere, Marco Giammarchi, Giovanni Cerchiari, Paola Scampoli, James William Storey, M. A. Subieta Vasquez, Jiro Kawada, Alban Kellerbauer, Cristina Riccardi, Claude Amsler, L. Noto, Tomoko Ariga, Alberto Rotondi, M. Kimura, S. Domizio, Ole Røhne, T. Kaltenbacher, L. Cabaret, Heidi Sandaker, T. Huse, Giovanni Consolati, Stefano Aghion, D. Krasnický, A. Gligorova, A. Dudarev, P. Genova, Rafael Ferragut, Massimo Caccia, Germano Bonomi, S. Haider, C. Regenfus, P. Bräunig, M. Špaček, N. Pacifico, V. Petráček, Carlo Canali, G. Testera, Karl Berggren, Fabrizio Castelli, O. Ahlén, Michael Doser, F. Prelz, Daniel Comparat, Chloé Malbrunot, Simone Cialdi, E. Jordan, A. S. Belov, Sebastian Lehner, F. Moia, Marco Prevedelli, Patrick Nedelec, Johann Zmeskal, H. Derking, Antonio Ereditato, Markus K. Oberthaler, C. Pistillo, Ruggero Caravita, V. A. Matveev, G. Nebbia, Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), AEGIS, Scampoli, Paola, S., Aghion, O., Ahl?n, C., Amsler, A., Ariga, T., Ariga, A. S., Belov, K., Berggren, G., Bonomi, P., Br?unig, J., Bremer, R. S., Brusa, L., Cabaret, M., Caccia, C., Canali, R., Caravita, F., Castelli, G., Cerchiari, S., Cialdi, D., Comparat, G., Consolati, H., Derking, S., Di Domizio, L., Di Noto, M., Doser, A., Dudarev, A., Ereditato, R., Ferragut, A., Fontana, P., Genova, M., Giammarchi, A., Gligorova, S. N., Gninenko, S., Haider, T., Huse, E., Jordan, L. V., J?rgensen, T., Kaltenbacher, J., Kawada, A., Kellerbauer, M., Kimura, A., Knecht, D., Krasnick?, V., Lagomarsino, S., Lehner, C., Malbrunot, S., Mariazzi, V. A., Matveev, F., Moia, G., Nebbia, P., N?d?lec, M. K., Oberthaler, N., Pacifico, V., Petr??ek, C., Pistillo, F., Prelz, M., Prevedelli, C., Regenfu, C., Riccardi, O., R?hne, A., Rotondi, H., Sandaker, J., Storey, M. A., Subieta Vasquez, M., ?pa?ek, G., Testera, E., Wildmann, S., Zavatarelli, J., Zmeskal, and AEgIS Collaboration
Subjects: Particle tracking detectors, Particle identification methods, Gravitational acceleration, 01 natural sciences, Nuclear physics, Particle identification methods, Particle tracking detectors, 0103 physical sciences, Vertical direction, Nuclear emulsion, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Aerospace engineering, Equivalence principle, Detectors and Experimental Techniques, 010306 general physics, Antihydrogen, Instrumentation, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Mathematical Physics, ComputingMilieux_MISCELLANEOUS, Physics, 010308 nuclear & particles physics, business.industry, Detector, Particle tracking detector, Interferometry, Antimatter, business
Abstract: For the first time the AEgIS (Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy) experiment will measure the Earth's local gravitational acceleration g on antimatter through the evaluation of the vertical displacement of an antihydrogen horizontal beam. This will be a model independent test of the Weak Equivalence Principle at the base of the general relativity. The initial goal of a g measurement with a relative uncertainty of 1% will be achieved with less than 1000 detected antihydrogens, provided that their vertical position could be determined with a precision of a few micrometers. An emulsion based detector is very suitable for this purpose featuring an intrinsic sub-micrometric spatial resolution. Nevertheless, the AEgIS experiment requires unprecedented operational conditions for this type of detector, namely vacuum environment and very low temperature. An intense R&D; activity is presently going on to optimize the detector for the AEgIS experimental requirements with rather encouraging results.
Published: 2013
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12. Study for cryogenic testing the Super-FRS magnets of FAIR in a new test facility at CERN

Author: A. Perin, J H Derking, O. Pirotte, and V Benda
Subjects: Engineering, Test facility, Large Hadron Collider, Liquid helium, business.industry, chemistry.chemical_element, Mechanical engineering, law.invention, chemistry, Antiproton, law, Magnet, Facility for Antiproton and Ion Research, business, Nuclear Experiment, Helium, Cooling down
Abstract: The Super-FRS magnets of the international Facility for Antiproton and Ion Research (FAIR) being built at GSI in Germany will be tested at a new cryogenic test facility currently under construction at CERN. During nominal operation the magnets will be cooled with liquid helium to 4.5 K. Over a period of three years in total 57 magnets will be tested of three different types. A study is performed to determine the cryogenic requirements for testing the Super-FRS magnets. The required operational parameters for the cool down, magnet test and warm up phases are determined and the results are discussed in this paper. For pre-cooling the magnets to 90 K with a rate of 1 Kcenterdoth-1, a maximum cooling power of 5.6 kW is required. Cooling down the magnets further to 4.5 K and filling will be performed with LHe within 24 h. For warming up the magnets a maximum heater power of 14 kW is needed. It is concluded that the planned test facility currently under construction at CERN fulfills the cryogenic requirements for testing the Super-FRS magnets.
Published: 2015

13. The AEgIS experiment

Author: Sebastiano Mariazzi, A. S. Belov, Marco Prevedelli, Marco Giammarchi, Z. Mazzotta, S. N. Gninenko, J. Bremer, Alban Kellerbauer, Rafael Ferragut, F. Prelz, L. Cabaret, Giovanni Cerchiari, Sebastian Gerber, Chloé Malbrunot, Simone Cialdi, Ole Røhne, E. Jordan, C. Pistillo, M. Kimura, T. Huse, Ruggero Caravita, N. Pacifico, D. Krasnický, Daniel Comparat, Alexey Dudarev, S. Rosenberger, Luca Penasa, A. Demetrio, Jiro Kawada, Akitaka Ariga, Alberto Rotondi, L. Di Noto, V. A. Matveev, S. D. Hogan, K. Chlouba, Sandra Zavatarelli, L. Semeria, Heidi Sandaker, Sebastian Lehner, Romualdo Santoro, Roberto S. Brusa, Paola Scampoli, Eberhard Widmann, James William Storey, V. Petracek, V. Lagomarsino, Claude Amsler, Stefano Aghion, M. Subieta, P. Bräunig, Massimo Caccia, Adriano Fontana, Tomoko Ariga, Cristina Riccardi, Giovanni Consolati, Germano Bonomi, M. Spacek, S. Curreli, S. Haider, Patrick Nedelec, Johann Zmeskal, H. Derking, G. Testera, Antonio Ereditato, M. Oberthaler, Angela Gligorova, Fabrizio Castelli, P. Yzombard, Michael Doser, M. C. Simon, L. Ravelli, H. Holmestad, I. M. Strojek, G. Nebbia, Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), AEGIS, Testera, G., Aghion, S., Amsler, C., Ariga, A., Ariga, T., Belov, A., Bonomi, G., Braunig, P., Bremer, J., Brusa, R., Cabaret, L., Caccia, M., Caravita, R., Castelli, F., Cerchiari, G., Chlouba, K., Cialdi, S., Comparat, D., Consolati, G., Curreli, S., Demetrio, A., Derking, H., Noto, L. Di, Doser, M., Dudarev, A., Ereditato, A., Ferragut, R., Fontana, A., Gerber, S., Giammarchi, M., Gligorova, A., Gninenko, S., Haider, S., Hogan, S., Holmestad, H., Huse, T., Jordan, E. J., Kawada, J., Kellerbauer, A., Kimura, M., Krasnický, D., Lagomarsino, V., Lehner, S., Malbrunot, C., Mariazzi, S., Matveev, V., Mazzotta, Z., Nebbia, G., Nedelec, P., Oberthaler, M., Pacifico, N., Penasa, L., Petracek, V., Pistillo, C., Prelz, F., Prevedelli, M., Ravelli, L., Riccardi, C., Røhne, O. M., Rosenberger, S., Rotondi, A., Sandaker, H., Santoro, R., Scampoli, Paola, Semeria, L., Simon, M., Spacek, M., Storey, J., Strojek, I. M., Subieta, M., Widmann, E., Yzombard, P., Zavatarelli, S., and Zmeskal, J.
Subjects: Physics::General Physics, Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optic, 530 Physics, Electron, Condensed Matter Physic, Gravitational acceleration, 01 natural sciences, Nuclear physics, Atomic and Molecular Physics, 0103 physical sciences, Antihydrogen, Equivalence Principle, Traps, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Physical and Theoretical Chemistry, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Physics::Atomic Physics, Equivalence principle, 010306 general physics, Nuclear and High Energy Physic, Physics, Large Hadron Collider, 010308 nuclear & particles physics, Trap, Antiproton, Antimatter, Physics::Accelerator Physics, and Optics, Beam (structure)
Abstract: see paper for full list of authors; International audience; The AEgIS experiment is presently almost completely installed at CERN. It is currently taking data with antiprotons, electrons and positrons. The apparatus is designed to form a cold, pulsed beam of antihydrogen to measure the Earth’s gravitational acceleration g on antimatter and to perform spectroscopy measurements. This paper describes the main features of the apparatus and shows a selected review of some achieved results.
Published: 2015
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14. Testing the Weak Equivalence Principle with an antimatter beam at CERN

Author: L. Ravelli, Patrick Nedelec, Davide Pagano, N. Pacifico, Sebastiano Mariazzi, Jiro Kawada, L. Di Noto, Johann Zmeskal, Luca Penasa, I. M. Strojek, S. Rosenberger, Massimo Caccia, Eberhard Widmann, V. Lagomarsino, Giovanni Consolati, H. Derking, Germano Bonomi, M. Sacerdoti, S. Haider, Romualdo Santoro, M. Subieta, Roberto S. Brusa, Ole Røhne, Paola Scampoli, James William Storey, M. Spacek, V. Petracek, M. Kimura, Marco Prevedelli, Claude Amsler, K. Chlouba, Alberto Rotondi, Tomoko Ariga, F. Prelz, D. Krasnicky, A. Demetrio, Heidi Sandaker, Alexey Dudarev, Giovanni Cerchiari, M. Oberthaler, Daniel Comparat, Adriano Fontana, Angela Gligorova, Chloé Malbrunot, L. Cabaret, P. Yzombard, Marco Giammarchi, Antonio Ereditato, T. Huse, Cristina Riccardi, G. Testera, J. Bremer, Z. Mazzotta, Simone Cialdi, Sandra Zavatarelli, E. Jordan, Felice Sorrentino, Alban Kellerbauer, A. S. Belov, Akitaka Ariga, Fabrizio Castelli, Michael Doser, H. Holmestad, Sebastian Gerber, P. Bräunig, S. N. Gninenko, C. Pistillo, Ruggero Caravita, Stefano Aghion, V. A. Matveev, Sebastian Lehner, Rafael Ferragut, G. Nebbia, Kimura, M, Aghion, S, Amsler, C, Ariga, A, Ariga, T, Belov, A, Bonomi, G, Bräunig, P, Bremer, J, Brusa, R S, Cabaret, L, Caccia, M, Caravita, R, Castelli, F, Cerchiari, G, Chlouba, K, Cialdi, S, Comparat, D, Consolati, G, Demetrio, A, Derking, H, Noto, L Di, Doser, M, Dudarev, A, Ereditato, A, Ferragut, R, Fontana, A, Gerber, S, Giammarchi, M, Gligorova, A, Gninenko, S, Haider, S, Holmestad, H, Huse, T, Jordan, E J, Kawada, J, Kellerbauer, A, Krasnicky, D, Lagomarsino, V, Lehner, S, Malbrunot, C, Mariazzi, S, Matveev, V, Mazzotta, Z, Nebbia, G, Nedelec, P, Oberthaler, M, Pacifico, N, Pagano, D, Penasa, L, Petracek, V, Pistillo, C, Prelz, F, Prevedelli, M, Ravelli, L, Riccardi, C, Røhne, O M, Rosenberger, S, Rotondi, A, Sacerdoti, M, Sandaker, H, Santoro, R, Scampoli, P, Sorrentino, F, Spacek, M, Strojek, I M, Storey, J, Subieta, M, Testera, G, Widmann, E, Yzombard, P, Zavatarelli, S, Zmeskal, J, Kimura, M., Aghion, S., Amsler, C., Ariga, A., Ariga, T., Belov, A., Bonomi, G., Bräunig, P., Bremer, J., Brusa, R. S., Cabaret, L., Caccia, M., Caravita, R., Castelli, F., Cerchiari, G., Chlouba, K., Cialdi, S., Comparat, D., Consolati, G., Demetrio, A., Derking, H., Noto, L. Di, Doser, M., Dudarev, A., Ereditato, A., Ferragut, R., Fontana, A., Gerber, S., Giammarchi, M., Gligorova, A., Gninenko, S., Haider, S., Holmestad, H., Huse, T., Jordan, E. J., Kawada, J., Kellerbauer, A., Krasnicky, D., Lagomarsino, V., Lehner, S., Malbrunot, C., Mariazzi, S., Matveev, V., Mazzotta, Z., Nebbia, G., Nedelec, P., Oberthaler, M., Pacifico, N., Pagano, D., Penasa, L., Petracek, V., Pistillo, C., Prelz, F., Prevedelli, M., Ravelli, L., Riccardi, C., Røhne, O. M., Rosenberger, S., Rotondi, A., Sacerdoti, M., Sandaker, H., Santoro, R., Scampoli, Paola, Sorrentino, F., Spacek, M., Strojek, I. M., Storey, J., Subieta, M., Testera, G., Widmann, E., Yzombard, P., Zavatarelli, S., Zmeskal, J., Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and AEGIS
Subjects: Photographic emulsions, Atoms, History, Particle physics, Physics::General Physics, 530 Physics, Nuclear emulsions, Gravitational acceleration, 7. Clean energy, Education, Nuclear physics, Physics and Astronomy (all), Positron, NUCLEAR-EMULSIONS, Gravitational accelerations, Physics and Astronomy (all), NUCLEAR-EMULSIONS, AEGIS EXPERIMENT, ANTIPROTONS, POSITRONIUM, SYSTEM, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Atomic and Molecular Clusters, Vertical displacements, Nuclear emulsion, Physics::Atomic Physics, particle physics, gravity, Antihydrogen, Gravitational forces, Stark accelerator, Physics, Large Hadron Collider, Emulsification, Tracking (position), Antihydrogen atoms, Fundamental laws, Weak equivalence principle, Detector, Computer Science Applications, Antiproton, Antimatter, Physics::Accelerator Physics, Particle Physics - Experiment
Abstract: International audience; The goal of the AEgIS experiment is to measure the gravitational acceleration of antihydrogen ? the simplest atom consisting entirely of antimatter ? with the ultimate precision of 1%. We plan to verify the Weak Equivalence Principle (WEP), one of the fundamental laws of nature, with an antimatter beam. The experiment consists of a positron accumulator, an antiproton trap and a Stark accelerator in a solenoidal magnetic field to form and accelerate a pulsed beam of antihydrogen atoms towards a free-fall detector. The antihydrogen beam passes through a moir? deflectometer to measure the vertical displacement due to the gravitational force. A position and time sensitive hybrid detector registers the annihilation points of the antihydrogen atoms and their time-of-flight. The detection principle has been successfully tested with antiprotons and a miniature moir? deflectometer coupled to a nuclear emulsion detector.
Published: 2015
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15. Emulsion detectors for the antihydrogen detection in AEgIS

Author: G. Testera, Ole Røhne, S. N. Gninenko, Fabrizio Castelli, M. Subieta, Michael Doser, M. C. Simon, C. Pistillo, Paola Scampoli, James William Storey, Claude Amsler, Giovanni Consolati, Ruggero Caravita, Patrick Nedelec, Akitaka Ariga, H. Holmestad, Germano Bonomi, K. Chlouba, Johann Zmeskal, M. Spacek, L. Cabaret, G. Nebbia, T. Huse, Chloé Malbrunot, P. Bräunig, S. Rosenberger, H. Derking, F. Prelz, J. Bremer, Marco Giammarchi, V. A. Matveev, Sebastiano Mariazzi, Alexey Dudarev, Rafael Ferragut, Daniel Comparat, Z. Mazzotta, Alban Kellerbauer, Sebastian Gerber, Stefano Aghion, Simone Cialdi, Sebastian Lehner, S. D. Hogan, E. Jordan, A. S. Belov, S. Haider, N. Pacifico, M. Oberthaler, Luca Penasa, Angela Gligorova, P. Yzombard, Antonio Ereditato, Cristina Riccardi, Tomoko Ariga, L. Ravelli, I. M. Strojek, Massimo Caccia, V. Petráček, Eberhard Widmann, V. Lagomarsino, Jiro Kawada, L. Di Noto, Sandra Zavatarelli, Marco Prevedelli, Romualdo Santoro, M. Kimura, D. Krasnický, A. Demetrio, Heidi Sandaker, Alberto Rotondi, Andrea Fontana, Giovanni Cerchiari, R. S. Brusa, Pistillo, C, Aghion, S., Amsler, C., Ariga, A., Ariga, T., Belov, A., Bonomi, G., Bräunig, P., Bremer, J., Brusa, R. S., Cabaret, L., Caccia, M., Caravita, R., Castelli, F., Cerchiari, G., Chlouba, K., Cialdi, S., Comparat, D., Consolati, G., Demetrio, A., Derking, H., Di Noto, L., Doser, M., Dudarev, A., Ereditato, A., Ferragut, R., Fontana, A., Gerber, S., Giammarchi, M., Gligorova, A., Gninenko, S., Haider, S., Hogan, S., Holmestad, H., Huse, T., Jordan, E. J., Kawada, J., Kellerbauer, A., Kimura, M., Krasnický, D., Lagomarsino, V., Lehner, S., Malbrunot, C., Mariazzi, S., Matveev, V., Mazzotta, Z., Nebbia, G., Nédélec, P., Oberthaler, M., Pacifico, N., Penasa, L., Petráček, V., Prelz, F., Prevedelli, M., Ravelli, L., Riccardi, C., Røhne, O., Rosenberger, S., Rotondi, A., Sandaker, H., Santoro, R., Scampoli, Paola, Simon, M., Špaček, M., Storey, J., Strojek, I. M., Subieta, M., Testera, G., Widmann, E., Yzombard, P., Zavatarelli, S., Zmeskal, J., Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and AEGIS
Subjects: Nuclear and High Energy Physics, Physics::General Physics, Antimatter, Atomic and Molecular Physics, and Optic, 530 Physics, Physics::Instrumentation and Detectors, Condensed Matter Physic, 01 natural sciences, Nuclear physics, Gravitational field, Atomic and Molecular Physics, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Physical and Theoretical Chemistry, 010306 general physics, Antihydrogen, Nuclear and High Energy Physic, Physics, Large Hadron Collider, 010308 nuclear & particles physics, Emulsion, Detector, Gravitational interaction, Emulsions, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, and Optics, Beam (structure)
Abstract: see paper for full list of authors; International audience; The AEgIS experiment at CERN aims to perform the first direct measurement of gravitational interaction between matter and antimatter by measuring the deviation of a cold antihydrogen beam in the Earth gravitational field. The design of the experiment has been recently updated to include emulsion films as position sensitive detector. The submicrometric position accuracy of emulsions leads indeed to a significant improvement of the experimental sensitivity. We present results of preliminary tests and discuss perspectives for the final measurement.
Published: 2015
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16. Particle tracking at cryogenic temperatures: the Fast Annihilation Cryogenic Tracking (FACT) detector for the AEgIS antimatter gravity experiment

Author: Sandra Zavatarelli, Tomoko Ariga, Andrea Fontana, Giovanni Consolati, Marco Prevedelli, Chloé Malbrunot, Germano Bonomi, L. Ravelli, M. Spacek, G. Nebbia, S. N. Gninenko, S. Haider, Sebastiano Mariazzi, Simone Cialdi, J. Bremer, L. Cabaret, I. M. Strojek, T. Huse, E. Jordan, A. S. Belov, Ole Røhne, Sebastian Gerber, M. Kimura, Markus K. Oberthaler, S. D. Hogan, Heidi Sandaker, Rafael Ferragut, P. Scampoli, C. Pistillo, F. Prelz, Marco Giammarchi, Ruggero Caravita, Giovanni Cerchiari, Alberto Rotondi, K. Chlouba, Romualdo Santoro, Z. Mazzotta, Akitaka Ariga, James William Storey, Alban Kellerbauer, Daniel Comparat, Alexey Dudarev, V. A. Matveev, Claude Amsler, R. Vaccarone, Patrick Nedelec, Johann Zmeskal, H. Derking, M. Subieta, Angela Gligorova, P. Yzombard, N. Pacifico, Stefano Aghion, R. S. Brusa, Luca Penasa, P. Bräunig, Alice Magnani, Sebastian Lehner, Eberhard Widmann, V. Lagomarsino, Massimo Caccia, V. Petráček, Jiro Kawada, L. Di Noto, M. C. Simon, S. Rosenberger, H. Holmestad, D. Krasnicky, Antonio Ereditato, G. Testera, Cristina Riccardi, Fabrizio Castelli, Michael Doser, Storey, J., Aghion, S., Amsler, C., Ariga, A., Ariga, T., Belov, A., Bonomi, G., Braunig, P., Bremer, J., Brusa, R., Cabaret, L., Caccia, M., Caravita, R., Castelli, F., Cerchiari, G., Chlouba, K., Cialdi, S., Comparat, D., Consolati, G., Derking, H., Di Noto, L., Doser, M., Dudarev, A., Ereditato, A., Ferragut, R., Fontana, A., Gerber, S., Giammarchi, M., Gligorova, A., Gninenko, S., Haider, S., Hogan, S., Holmestad, H., Huse, T., Jordan, E. J., Kawada, J., Kellerbauer, A., Kimura, M., Krasnicky, D., Lagomarsino, V., Lehner, S., Magnani, A., Malbrunot, C., Mariazzi, S., Matveev, V., Mazzotta, Z., Nebbia, G., Nedelec, P., Oberthaler, M., Pacifico, N., Penasa, L., Petracek, V., Pistillo, C., Prelz, F., Prevedelli, M., Ravelli, L., Riccardi, C., Rohne, O. M., Rosenberger, S., Rotondi, A., Sandaker, H., Santoro, R., Scampoli, P., Simon, M., Spacek, M., Strojek, I. M., Subieta, M., Testera, G., Vaccarone, R., Widmann, E., Yzombard, P., Zavatarelli, S., Zmeskal, J., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and AEgIS
Subjects: Atom interferometer, gas and liquid scintillators), Physics::Instrumentation and Detectors, 530 Physics, Context (language use), Cryogenics, Tracking (particle physics), Nuclear physics, Particle tracking detectors, Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators), Silicon photomultiplier, Physics::Atomic and Molecular Clusters, Physics::Atomic Physics, Detectors and Experimental Techniques, Antihydrogen, Instrumentation, Mathematical Physics, Physics, Detector, antimatter. scintillating fibers, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Particle tracking detector, antimatter. scintillating fibers, silicon photomultipliers, scintillation and light emission processes (solid, Scintillators, Antimatter, silicon photomultipliers
Abstract: see paper for full list of authors; International audience; The AEgIS experiment is an interdisciplinary collaboration between atomic, plasma and particle physicists, with the scientific goal of performing the first precision measurement of the Earth's gravitational acceleration on antimatter. The principle of the experiment is as follows: cold antihydrogen atoms are synthesized in a Penning-Malmberg trap and are Stark accelerated towards a moiré deflectometer, the classical counterpart of an atom interferometer, and annihilate on a position sensitive detector. Crucial to the success of the experiment is an antihydrogen detector that will be used to demonstrate the production of antihydrogen and also to measure the temperature of the anti-atoms and the creation of a beam. The operating requirements for the detector are very challenging: it must operate at close to 4 K inside a 1 T solenoid magnetic field and identify the annihilation of the antihydrogen atoms that are produced during the 1 μs period of antihydrogen production. Our solution—called the FACT detector—is based on a novel multi-layer scintillating fiber tracker with SiPM readout and off the shelf FPGA based readout system. This talk will present the design of the FACT detector and detail the operation of the detector in the context of the AEgIS experiment.
Published: 2015
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17. The AEgIS Experiment

Author: A. Knecht, S. Aghion, O. Ahlxe9n, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, G. Bonomi, P. Brxe4unig, J. Bremer, R. S. Brusa, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, J. H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Haider, S. D. Hogan, T. Huse, E. Jordan, L. V. Jxf8rgensen, T. Kaltenbacher, and J. Kawada
Published: 2014

18. Measuring the gravitational free-fall of antihydrogen

Author: J. Storey, S. Aghion, O. Ahlxe9n, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, G. Bonomi, P. Brxe4unig, J. Bremer, R. S. Brusa, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, J. H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Haider, S. D. Hogan, T. Huse, E. Jordan, L. V. Jxf8rgensen, T. Kaltenbacher, and J. Kawada
Published: 2014

19. Investigation of silicon sensors for their use as antiproton annihilation detectors

Author: O. Ahlén, Ruggero Caravita, L. Cabaret, T. Huse, C. Regenfus, A. Sosa, V. A. Matveev, Rafael Ferragut, Alban Kellerbauer, Heidi Sandaker, P. Bräunig, G. Nebbia, S. Haider, S. N. Gninenko, Massimo Caccia, Cristina Riccardi, Marco Prevedelli, Patrick Nedelec, G. Burghart, Adriano Fontana, Giovanni Consolati, Sebastiano Mariazzi, S. Di Domizio, Johann Zmeskal, M. A. Subieta Vasquez, A. Magnani, Germano Bonomi, J. H. Derking, M. Spacek, P. Genova, D. Krasnický, Markus K. Oberthaler, Stefano Aghion, R. S. Brusa, L. Di Noto, Alberto Rotondi, Marco Giammarchi, J. Harasimowicz, Vojtech Petracek, Giovanni Cerchiari, Carsten Welsch, Carlo Canali, Angela Gligorova, P. Yzombard, C. Malbrunot, Eberhard Widmann, Alexey Dudarev, V. Lagomarsino, Sebastian Lehner, F. Moia, N. Pacifico, Clara Nellist, J. Bremer, T. Kaltenbacher, L. V. Jørgensen, A. Knecht, Sandra Zavatarelli, C. Da Via, Ole Røhne, G. Testera, Fabrizio Castelli, Michael Doser, F. Prelz, Daniel Comparat, Simone Cialdi, E. Jordan, A. S. Belov, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and AEGIS
Subjects: Silicon, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Antiprotons, Gravitational acceleration, 01 natural sciences, Nuclear physics, Planar, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], AEgIS, Detector, Pixel, Strip, Instrumentation, Detectors and Experimental Techniques, 010306 general physics, Antihydrogen, ComputingMilieux_MISCELLANEOUS, Physics, Large Hadron Collider, 010308 nuclear & particles physics, Antiproton Decelerator, Antiproton, Antimatter, Silicon, Antiprotons, Detector, AEgIS, Strip, Pixel
Abstract: We present here a new application of silicon sensors aimed at the direct detection of antinucleons annihilations taking place inside the sensor׳s volume. Such detectors are interesting particularly for the measurement of antimatter properties and will be used as part of the gravity measurement module in the AE g ¯ IS experiment at the CERN Antiproton Decelerator. One of the goals of the AE g ¯ IS experiment is to measure the gravitational acceleration of antihydrogen with 1% precision. Three different silicon sensor geometries have been tested with an antiproton beam to investigate their properties as annihilation detection devices: strip planar, 3D pixels and monolithic pixel planar. In all cases we were successfully detecting annihilations taking place in the sensor and we were able to make a first characterization of the clusters and tracks.
Published: 2014
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20. Measuring with , progress and perspectives

Author: D. Krasnickxfd, S. Aghion, O. Ahlxe9n, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, K. Berggren, G. Bonomi, P. Brxe4unig, J. Bremer, R. S. Brusa, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Haider, T. Huse, E. Jordan, L. V. Jxf8rgensen, T. Kaltenbacher, and J. Kawada
Published: 2014

21. Measuring the gravitational free-fall of antihydrogen

Author: Ole Røhne, C. Malbrunot, Giovanni Consolati, F. Prelz, Alban Kellerbauer, Germano Bonomi, Akitaka Ariga, J. H. Derking, Davide Trezzi, G. Testera, M. Spacek, Cristina Riccardi, F. Moia, Rafael Ferragut, Patrick Nedelec, Alberto Rotondi, Fabrizio Castelli, G. Nebbia, V. Petráček, Johann Zmeskal, P. Bräunig, Michael Doser, Daniel Comparat, S. Di Domizio, L. Cabaret, A. Knecht, Sandra Zavatarelli, Marco Prevedelli, T. Huse, S. Haider, Jiro Kawada, L. Di Noto, S. D. Hogan, R. S. Brusa, Marco Giammarchi, J. Bremer, Sebastiano Mariazzi, P. Genova, Eberhard Widmann, Paola Scampoli, James William Storey, M. A. Subieta Vasquez, O. Ahlén, V. Lagomarsino, Heidi Sandaker, Angela Gligorova, N. Pacifico, Sebastian Lehner, Viktor Matveev, Stefano Aghion, Frédéric Merkt, Alexey Dudarev, Adriano Fontana, Claude Amsler, M. Kimura, R. Vaccarone, C. Regenfus, L. V. Jørgensen, Antonio Ereditato, Carlo Canali, Tomoko Ariga, D. Krasnický, T. Kaltenbacher, Giovanni Cerchiari, Simone Cialdi, E. Jordan, A. S. Belov, S. N. Gninenko, C. Pistillo, Ruggero Caravita, Markus K. Oberthaler, Storey, J., Aghion, S., Ahlén, O., Amsler, C., Ariga, A., Ariga, T., Belov, A. S., Bonomi, G., Bräunig, P., Bremer, J., Brusa, R. S., Cabaret, L., Canali, C., Caravita, R., Castelli, F., Cerchiari, G., Cialdi, S., Comparat, D., Consolati, G., Derking, J. H., Di Domizio, S., Di Noto, L., Doser, M., Dudarev, A., Ereditato, A., Ferragut, R., Fontana, A., Genova, P., Giammarchi, M., Gligorova, A., Gninenko, S. N., Haider, S., Hogan, S. D., Huse, T., Jordan, E., Jørgensen, L. V., Kaltenbacher, T., Kawada, J., Kellerbauer, A., Kimura, M., Knecht, A., Krasnický, D., Lagomarsino, V., Lehner, S., Malbrunot, C., Mariazzi, S., Matveev, V. A., Merkt, F., Moia, F., Nebbia, G., Nédélec, P., Oberthaler, M. K., Pacifico, N., Petráček, V., Pistillo, C., Prelz, F., Prevedelli, M., Regenfus, C., Riccardi, C., Røhne, O., Rotondi, A., Sandaker, H., Scampoli, Paola, Subieta Vasquez, M. A., Špaček, M., Testera, G., Trezzi, D., Vaccarone, R., Widmann, E., Zavatarelli, S., and Zmeskal, J.
Subjects: AegIS, Antihydrogen, Emulsions, Gravity, Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics, Condensed Matter Physics, Physical and Theoretical Chemistry, Antiparticle, Particle physics, Atom interferometer, 530 Physics, Physics::Instrumentation and Detectors, Nuclear physics, Atomic and Molecular Physics, Physics::Atomic Physics, AegIS, Antihydrogen, Emulsions, Gravity, Physics, Detector, Antiproton Decelerator, Antiproton, Antimatter, High Energy Physics::Experiment, and Optics, Impact parameter
Abstract: Antihydrogen holds the promise to test, for the first time, the universality of free-fall with a system composed entirely of antiparticles. The AEgIS experiment at CERN’s antiproton decelerator aims to measure the gravitational interaction between matter and antimatter by measuring the deflection of a beam of antihydrogen in the Earths gravitational field (g¯¯¯). The principle of the experiment is as follows: cold antihydrogen atoms are synthesized in a Penning-Malberg trap and are Stark accelerated towards a moiré deflectometer, the classical counterpart of an atom interferometer, and annihilate on a position sensitive detector. Crucial to the success of the experiment is the spatial precision of the position sensitive detector. We propose a novel free-fall detector based on a hybrid of two technologies: emulsion detectors, which have an intrinsic spatial resolution of 50 nm but no temporal information, and a silicon strip / scintillating fiber tracker to provide timing and positional information. In 2012 we tested emulsion films in vacuum with antiprotons from CERN’s antiproton decelerator. The annihilation vertices could be observed directly on the emulsion surface using the microscope facility available at the University of Bern. The annihilation vertices were successfully reconstructed with a resolution of 1–2 μmon the impact parameter. If such a precision can be realized in the final detector, Monte Carlo simulations suggest of order 500 antihydrogen annihilations will be sufficient to determine g¯¯¯with a 1 % accuracy. This paper presents current research towards the development of this technology for use in the AEgIS apparatus and prospects for the realization of the final detector., Hyperfine Interactions, 228 (1-3), ISSN:0304-3843, ISSN:0304-3834, ISSN:1572-9540, Proceedings of the 11th International Conference on Low Energy Antiproton Physics (LEAP 2013) held in Uppsala, Sweden, 10–15 June, 2013
Published: 2014
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22. AE$\overline {\rm{g}}$IS Experiment: Measuring the accelerationgof the earth’s gravitational field on antihydrogen beam

Author: M. A. Subieta Vasquez, S. Aghion, O. Ahlén, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, G. Bonomi, P. Bräunig, J. Bremer, R. S. Brusa, L. Cabaret, M. Caccia, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, L. Dassa, J. H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Heider, S. D. Hogan, T. Huse, E. Jordan, L. V. Jørgensen, T. Kaltenbacher, J. Kawada, A. Kellerbauer, M. Kimura, A. Knecht, D. Krasnický, V. Lagomarsino, S. Mariazzi, V. A. Matveev, F. Merkt, F. Moia, G. Nebbia, P. Nédélec, M. K. Oberthaler, N. Pacifico, V. Petráček, C. Pistilo, F. Prelz, M. Prevedelli, C. Regenfus, C. Ricardi, O. Røhne, A. Rotondi, H. Sandaker, P. Scampoli, J. Storey, M. Špaček, G. Testera, D. Trezzi, R. Vaccarone, F. Villa, and S. Zavatarelli
Subjects: Physics, Particle physics, QC1-999, Electron, Gravitational acceleration, 7. Clean energy, Nuclear physics, Antiproton Decelerator, Deflection (physics), Antiproton, Antimatter, Physics::Accelerator Physics, Physics::Atomic Physics, Antihydrogen, Beam (structure)
Abstract: The AEg¯ $\overline {\rm{g}}$IS experiment [1] aims at directly measuring the gravitational acceleration g on a beam of cold antihydrogen (H¯$\overline {\rm{H}}$) to a precision of 1%, performing the first test with antimatter of the (WEP) Weak Equivalence Principle. The experimental apparatus is sited at the Antiproton Decelerator (AD) at CERN, Geneva, Switzerland. After production by mixing of antiprotons with Rydberg state positronium atoms (Ps), the H¯$\overline {\rm{H}}$ atoms will be driven to fly horizontally with a velocity of a few 100 ms−1 for a path length of about 1 meter. The small deflection, few tens of μm, will be measured using two material gratings (of period ∼ 80 μm) coupled to a position-sensitive detector working as a moiré deflectometer similarly to what has been done with matter atoms [2]. The shadow pattern produced by the H¯$\overline {\rm{H}}$ beam will then be detected by reconstructing the annihilation points with a spatial resolution (∼ 2 μm) of each antiatom at the end of the flight path by the sensitive-position detector. During 2012 the experimental apparatus has been commissioned with antiprotons and positrons. Since the AD will not be running during 2013,during the refurbishment of the CERN accelerators, the experiment is currently working with positrons, electrons and protons, in order to prepare the way for the antihydrogen production in late 2014.
Published: 2014

23. Development of the cryogenic system of AEgIS at CERN

Author: A. Dudarev, J. Bremer, S. Haider, M. Doser, J. H. Derking, and G. Burghart
Subjects: Cryostat, Physics, Liquid helium, Superconducting magnet, Penning trap, Accelerators and Storage Rings, law.invention, Antiproton Decelerator, Nuclear physics, law, Antimatter, Dilution refrigerator, Atomic physics, Antihydrogen
Abstract: The AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) experiment is located at the antiproton decelerator complex of CERN. The main goal of the experiment is to perform the first direct measurement of the Earth’s gravitational acceleration on antihydrogen atoms within 1% precision. The antihydrogen is produced in a cylindrical Penning trap by combining antiprotons with positrons. To reach the precision of 1%, the antihydrogen has to be cooled to 100 mK to reduce its random velocity. A dilution refrigerator is selected to deliver the necessary cooling capacity of 100 μW at 50 mK. The AEgIS cryogenic system basically consists of cryostats for a 1-T and for a 5-T superconducting magnet, a central region cryostat, a dilution refrigerator cryostat and a measurement cryostat with a Moiré deflectometer to measure the gravitational acceleration. In autumn 2012, the 1-T cryostat, 5-T cryostat and central region cryostat were assembled and commissioned. The apparatus is cooled down in eight days using 2500 L of liquid helium and liquid nitrogen. During operation, the average consumption of liquid helium is 150 L∙day-1 and of liquid nitrogen 5 L·day-1. The temperature sensors at the Penning traps measured 12 K to 18 K, which is higher than expected. Simulations show that this is caused by a bad thermalization of the trap wiring. The implementation of the sub-kelvin region is foreseen for mid-2015. The antihydrogen will be cooled down to 100 mK in an ultra-cold trap consisting of multiple high-voltage electrodes made of sapphire with gold plated electrode sectors.
Published: 2014
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24. A new cryogenic test facility for large superconducting devices at CERN

Author: J H Derking, L. Stewart, J Bremer, Luigi Serio, V Benda, A. Perin, and O. Pirotte
Subjects: Superconductivity, Engineering, Large Hadron Collider, Test facility, Electromagnet, Physics::Instrumentation and Detectors, business.industry, Nuclear engineering, Mechanical engineering, Superconducting magnet, law.invention, law, Electrical equipment, Magnet, Physics::Accelerator Physics, business, Research center
Abstract: To expand CERN testing capability to superconducting devices that cannot be installed in existing test facilities because of their size and/or mass, CERN is building a new cryogenic test facility for large and heavy devices. The first devices to be tested in the facility will be the S-FRS superconducting magnets for the FAIR project that is currently under construction at the GSI Research Center in Darmstadt, Germany. The facility will include a renovated cold box with 1.2 kW at 4.5 K equivalent power with its compression system, two independent 15 kW liquid nitrogen precooling and warm-up units, as well as a dedicated cryogenic distribution system providing cooling power to three independent test benches. The article presents the main input parameters and constraints used to define the cryogenic system and its infrastructure. The chosen layout and configuration of the facility is presented and the characteristics of the main components are described.
Published: 2015
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25. Measuring $\bar{g}$ with ${\rm AE\bar{g}IS}$, progress and perspectives

Author: D. Krasnický, S. Aghion, O. Ahlén, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, K. Berggren, G. Bonomi, P. Bräunig, J. Bremer, R. S. Brusa, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Haider, T. Huse, E. Jordan, L. V. Jørgensen, T. Kaltenbacher, J. Kawada, A. Kellerbauer, M. Kimura, A. Knecht, V. Lagomarsino, S. Lehner, A. Magnani, C. Malbrunot, S. Mariazzi, V. A. Matveev, G. Nebbia, P. Nédélec, M. K. Oberthaler, N. Pacifico, V. Petráček, C. Pistillo, F. Prelz, M. Prevedelli, C. Regenfus, C. Riccardi, O. Røhne, A. Rotondi, H. Sandaker, P. Scampoli, J. Storey, M. A. Subieta Vasquez, M. Špaček, G. Testera, E. Widmann, P. Yzombard, S. Zavatarelli, and J. Zmeskal
Subjects: Physics, Theoretical physics, Gravity (chemistry), business.industry, Direct test, Antimatter, Measure (physics), Relative precision, Aerospace engineering, Antihydrogen, Gravitational acceleration, business
Abstract: [Formula: see text] experiment's main goal is to measure the local gravitational acceleration of antihydrogen [Formula: see text] and thus perform a direct test of the weak equivalence principle with antimatter. In the first phase of the experiment the aim is to measure [Formula: see text] with 1% relative precision. This paper presents the antihydrogen production method and a description of some components of the experiment, which are necessary for the gravity measurement. Current status of the [Formula: see text] experimental apparatus is presented and recent commissioning results with antiprotons are outlined. In conclusion we discuss the short-term goals of the [Formula: see text] collaboration that will pave the way for the first gravity measurement in the near future.
Published: 2014
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26. Study for cryogenic testing the Super-FRS magnets of FAIR in a new test facility at CERN.

Author: J H Derking, A Perin, V Benda, and O Pirotte
Published: 2015
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27. A new cryogenic test facility for large superconducting devices at CERN.

Author: A Perin, J H Derking, L Serio, L Stewart, V Benda, J Bremer, and O Pirotte
Published: 2015
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28. Prospects for measuring the gravitational free-fall of antihydrogen with emulsion detectors

Author: AEgIS Collaboration, Aghion, S., Ahl��n, O., Amsler, C., Ariga, A., Ariga, T., Belov, A. S., Bonomi, G., Br��unig, P., Bremer, J., Brusa, R. S., Cabaret, L., Canali, C., Caravita, R., Castelli, F., Cerchiari, G., Cialdi, S., Comparat, D., Consolati, G., Derking, J. H., Di Domizio, S., Di Noto, L., Doser, M., Dudarev, A., Ereditato, A., Ferragut, R., Fontana, A., Genova, P., Giammarchi, M., Gligorova, A., Gninenko, S. N., Haider, S., Harasimovicz, J., Hogan, S. D., Huse, T., Jordan, E., J��rgensen, L. V., Kaltenbacher, T., Kawada, J., Kellerbauer, A., Kimura, M., Knecht, A., Krasnick��, D., Lagomarsino, V., Magnani, A., Mariazzi, S., Matveev, V. A., Moia, F., Nebbia, G., N��d��lec, P., Oberthaler, M. K., Pacifico, N., Petr��cek, V., Pistillo, C., Prelz, F., Prevedelli, M., Regenfus, C., Riccardi, C., R��hne, O., Rotondi, A., Sandaker, H., Scampoli, P., Sosa, A., Storey, J., Vasquez, M. A. Subieta, Spacek, M., Testera, G., Trezzi, D., Vaccarone, R., Welsch, C. P., Zavatarelli, S., Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), AEGIS, S., Aghion, O., Ahl?n, C., Amsler, A., Ariga, T., Ariga, A. S., Belov, G., Bonomi, P., Br?unig, J., Bremer, R. S., Brusa, L., Cabaret, C., Canali, R., Caravita, F., Castelli, G., Cerchiari, S., Cialdi, D., Comparat, G., Consolati, J. H., Derking, S., Di Domizio, L., Di Noto, M., Doser, A., Dudarev, A., Ereditato, R., Ferragut, A., Fontana, P., Genova, M., Giammarchi, A., Gligorova, S. N., Gninenko, S., Haider, J., Harasimovicz, S. D., Hogan, T., Huse, E., Jordan, L. V., J?rgensen, T., Kaltenbacher, J., Kawada, A., Kellerbauer, M., Kimura, A., Knecht, D., Krasnick?, V., Lagomarsino, A., Magnani, S., Mariazzi, V. A., Matveev, F., Moia, G., Nebbia, P., N?d?lec, M. K., Oberthaler, N., Pacifico, V., Petr??ek, C., Pistillo, F., Prelz, M., Prevedelli, C., Regenfu, C., Riccardi, O., R?hne, A., Rotondi, H., Sandaker, Scampoli, Paola, A., Sosa, J., Storey, M. A., Subieta Vasquez, M., ?pa?ek, G., Testera, D., Trezzi, R., Vaccarone, C. P., Welsch, S., Zavatarelli, S Aghion, O Ahlén, C Amsler, A Ariga, T Ariga, A S Belov, G Bonomi, P Bräunig, J Bremer, R S Brusa, L Cabaret, C Canali, R Caravita, F Castelli, G Cerchiari, S Cialdi, D Comparat, G Consolati, J H Derking, S Di Domizio, L Di Noto, M Doser, A Dudarev, A Ereditato, R Ferragut, A Fontana, P Genova, M Giammarchi, A Gligorova, S N Gninenko, S Haider, J Harasimovicz, S D Hogan, T Huse, E Jordan, L V Jørgensen, T Kaltenbacher, J Kawada, A Kellerbauer, M Kimura, A Knecht, D Krasnický, V Lagomarsino, A Magnani, S Mariazzi, V A Matveev, F Moia, G Nebbia, P Nédélec, M K Oberthaler, N Pacifico, V Petráček, C Pistillo, F Prelz, M Prevedelli, C Regenfu, C Riccardi, O Røhne, A Rotondi, H Sandaker, P Scampoli, A Sosa, J Storey, M A Subieta Vasquez, M Špaček, G Testera, D Trezzi, R Vaccarone, C P Welsch, and S Zavatarelli
Subjects: Physics::General Physics, Physics - Instrumentation and Detectors, 530 Physics, Physics::Instrumentation and Detectors, FOS: Physical sciences, Gravitational acceleration, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Particle tracking detectors, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Atomic Physics, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Detectors and Experimental Techniques, 010306 general physics, Antihydrogen, Nuclear Experiment, Instrumentation, Mathematical Physics, Physics, Large Hadron Collider, 010308 nuclear & particles physics, Detector, Instrumentation and Detectors (physics.ins-det), 3. Good health, Antiproton Decelerator, Time of flight, Antiproton, Antimatter, Physics::Accelerator Physics, High Energy Physics::Experiment, RIVELATORI DI PARTICELLE ELEMENTARI
Abstract: The main goal of the AEgIS experiment at CERN is to test the weak equivalence principle for antimatter. AEgIS will measure the free-fall of an antihydrogen beam traversing a moir\'e deflectometer. The goal is to determine the gravitational acceleration g for antihydrogen with an initial relative accuracy of 1% by using an emulsion detector combined with a silicon micro-strip detector to measure the time of flight. Nuclear emulsions can measure the annihilation vertex of antihydrogen atoms with a precision of about 1 - 2 microns r.m.s. We present here results for emulsion detectors operated in vacuum using low energy antiprotons from the CERN antiproton decelerator. We compare with Monte Carlo simulations, and discuss the impact on the AEgIS project., Comment: 20 pages, 16 figures, 3 tables
Published: 2013
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29. Experiments with low-energy antimatter

Author: Aghion, S., Gerber, S., Mariazzi, S., Malbrunot, C., Eidelman, S., Caravita, R., Demetrio, A., Zavatarelli, S., Di Noto, L., Storey, James William, Giardina, G., Rotondi, A., Petracek, V., Fontana, A., Testera, G., Amsler, Claude, Oberthaler, M., Comparat, D., Rosenberger, S., Brusa, R.S., Bonomi, G., Nedelec, P., Doser, M., Consolati, G., Lehner, S., Prelz, F., Riccardi, C., Cabaret, L., Zmeskal, J., Castelli, F., Derking, H., Chlouba, K., Jordan, E. J., Pacifico, N., Widmann, E., Bremer, J., Sacerdoti, M., Mandaglio, G., Hogan, S., Giammarchi, M., Ariga, Akitaka, Gligorova, A., Scampoli, Paola, Pistillo, Ciro, Strojek, I. M., Gninenko, S., Simon, M., Nebbia, G., Santoro, R., Kimura, Mitsuhiro, Cerchiari, G., Kellerbauer, A., Penasa, L., Kawada, Jiro, Venanzoni, G., Battaglieri, M., Cialdi, S., Dudarev, A., Prevedelli, M., Ariga, Tomoko, Matveev, V., Yzombard, P., Caccia, M., Krasnicky, D., Sandaker, H., Røhne, O.M., Holmestad, H., Bräunig, P., Ereditato, Antonio, Mazzotta, Z., Belov, A., Subieta, M., Ferragut, R., Lagomarsino, V., Ravelli, L., Haider, S., Huse, T., Spacek, M., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), G., Giardina, G., Consolati, S., Aghion, C., Amsler, A., Ariga, T., Ariga, A., Belov, G., Bonomi, P., Bräunig, J., Bremer, R. S., Brusa, L., Cabaret, M., Caccia, R., Caravita, F., Castelli, G., Cerchiari, K., Chlouba, S., Cialdi, D., Comparat, A., Demetrio, H., Derking, L., Di Noto, M., Doser, A., Dudarev, A., Ereditato, R., Ferragut, A., Fontana, S., Gerber, M., Giammarchi, A., Gligorova, S., Gninenko, S., Haider, S., Hogan, H., Holmestad, T., Huse, E. J., Jordan, J., Kawada, A., Kellerbauer, M., Kimura, D., Krasnicky, V., Lagomarsino, S., Lehner, C., Malbrunot, S., Mariazzi, V., Matveev, Z., Mazzotta, G., Nebbia, P., Nedelec, M., Oberthaler, N., Pacifico, L., Penasa, V., Petracek, C., Pistillo, F., Prelz, M., Prevedelli, L., Ravelli, C., Riccardi, O. M., Røhne, S., Rosenberger, A., Rotondi, M., Sacerdoti, H., Sandaker, R., Santoro, Scampoli, Paola, M., Simon, M., Spacek, J., Storey, I. M., Strojek, M., Subieta, G., Testera, E., Widmann, P., Yzombard, S., Zavatarelli, J., Zmeskal, S., Eidelman, G., Venanzoni, M., Battaglieri, and G., Mandaglio
Subjects: Physics, Large Hadron Collider, 530 Physics, QC1-999, PLASMAS, ANTIHYDROGEN BEAM, AEGIS EXPERIMENT, PENNING TRAP, GRAVITY, SILICA, ATOMS, Nuclear physics, Antiproton Decelerator, Physics and Astronomy (all), Low energy, Antimatter, Systems engineering, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Antihydrogen, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), Particle Physics - Experiment, ComputingMilieux_MISCELLANEOUS
Abstract: Investigations on antimatter allow us to shed light on fundamental issues of contemporary physics. The only antiatom presently available, antihydrogen, is produced making use of the Antiproton Decelerator (AD) facility at CERN. International collaborations currently on the floor (ALPHA, ASACUSA and ATRAP) have succeeded in producing antihydrogen and are now involved in its confinement and manipulation. The AEGIS experiment is currently completing the commissioning of the apparatus which will generate and manipulate antiatoms. The present paper, after a report on the main results achieved with antihydrogen physics, gives an overview of the AEGIS experiment, describes its current status and discusses its first target.
Published: 2015
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29 results on '"H. Derking"'

1. The AEgIS Experiment

2. Design, Procurement, Installation and Commissioning of the Cryogenic Infrastructure for a New Superconducting RF Test Facility with Beam at CERN

3. Commissioning and performance of the cryogenic system of the new test facility for large superconducting devices at CERN

4. A moiré deflectometer for antimatter

5. Interfacing issues in microcooling of optical detectors in space applications

6. AEgIS Experiment: Measuring the acceleration g of the earth’s gravitational field on antihydrogen beam

7. Detection of Low Energy Antiproton Annihilations in a Segmented Silicon Detector

8. Measuring GBAR with emulsion detector

9. Measuring g with Aegis, Progress and Perspectives

10. Comparison of Planar and 3D Silicon Pixel Sensors Used for Detection of Low Energy Antiprotons

11. Development of nuclear emulsions operating in vacuum for the AEgIS experiment

12. Study for cryogenic testing the Super-FRS magnets of FAIR in a new test facility at CERN

13. The AEgIS experiment

14. Testing the Weak Equivalence Principle with an antimatter beam at CERN

15. Emulsion detectors for the antihydrogen detection in AEgIS

16. Particle tracking at cryogenic temperatures: the Fast Annihilation Cryogenic Tracking (FACT) detector for the AEgIS antimatter gravity experiment

17. The AEgIS Experiment

18. Measuring the gravitational free-fall of antihydrogen

19. Investigation of silicon sensors for their use as antiproton annihilation detectors

20. Measuring with , progress and perspectives

21. Measuring the gravitational free-fall of antihydrogen

22. AE$\overline {\rm{g}}$IS Experiment: Measuring the accelerationgof the earth’s gravitational field on antihydrogen beam

23. Development of the cryogenic system of AEgIS at CERN

24. A new cryogenic test facility for large superconducting devices at CERN

25. Measuring $\bar{g}$ with ${\rm AE\bar{g}IS}$, progress and perspectives

26. Study for cryogenic testing the Super-FRS magnets of FAIR in a new test facility at CERN.

27. A new cryogenic test facility for large superconducting devices at CERN.

28. Prospects for measuring the gravitational free-fall of antihydrogen with emulsion detectors

29. Experiments with low-energy antimatter

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29 results on '"H. Derking"'

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