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1. A Concept For Cancelling The Leakage Field Inside The Stored Beam Chamber Of A Septum Magnet

Author

Abliz, M., Jaski, M., Xiao, A., Jain, A., Wienands, U., Cease, H., Borland, M., Decker, G., and Kerby, J.

Subjects
Physics - Accelerator Physics
Abstract

The Advanced Photon Source is in the process of up-grading its storage ring from a double-bend to a multi-bend lattice as part of the APS Upgrade Project (APS-U). A swap-out injection scheme is planned for the APS-U to keep a constant beam current and to enable a small dynamic aperture. A novel concept that cancels out the effect of leakage field inside the stored beam chamber was introduced in the design of the septum magnet. As a result, the horizontal deflecting angle of the stored beam was reduced to below 1 micro-rad with a 2 mm septum thick-ness and 1.06T normal injection field. The concept helped to minimize the integrated skew quadrupole field and normal sextupole fields inside stored beam chamber as well. The designed septum magnet deflects the injected electron beam by 89 mrad with a ring energy of 6 GeV. The stored beam chamber has an 8 mm x 6 mm super-ellipsoidal aperture. The magnet is straight; however, it is tilted in yaw, roll, and pitch from the stored beam cham-ber to meet the on axis swap out injection requirements for the APS-U lattice.

Published
2017
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2. PXIE: Project X Injector Experiment

Author

Ostroumov, P. N., Holmes, S. D., Kephart, R. D., Kerby, J. S., Lebedev, V. A., Mishra, C. S., Nagaitsev, S., Shemyakin, A. V., Solyak, N., Stanek, R. P., and Li, D.

Subjects
Physics - Accelerator Physics
Abstract

A multi-MW proton facility, Project X has been proposed and is currently under development at Fermilab. As part of this development program, we are constructing a prototype of the front end of the Project X linac at Fermilab. The construction and successful operations of this facility will validate the concept for the Project X front end, thereby minimizing the primary technical risk element within the Project. The Project X Injector Experiment (PXIE) can be constructed over the period FY12-16 and will include an H- ion source, a CW 2.1-MeV RFQ and two SC cryomodules providing up to 30 MeV energy gain at an average beam current of 1 mA. Successful operations of the facility will demonstrate the viability of novel front end technologies that will find applications beyond Project X in the longer term., Comment: 3 pp. 3rd International Particle Accelerator Conference (IPAC 2012) 20-25 May 2012, New Orleans, Louisiana

Published
2013

3. Project X functional requirements specification

Author

The Project X Collaboration, Holmes, S. D., Henderson, S. D., Kephart, R., Kerby, J., Kourbanis, I., Lebedev, V., Mishra, S., Nagaitsev, S., Solyak, N., and Tschirhart, R.

Subjects
Physics - Accelerator Physics
Abstract

Project X is a multi-megawatt proton facility being developed to support a world-leading program in Intensity Frontier physics at Fermilab. The facility is designed to support programs in elementary particle and nuclear physics, with possible applications to nuclear energy research. A Functional Requirements Specification has been developed in order to establish performance criteria for the Project X complex in support of these multiple missions, and to assure that the facility is designed with sufficient upgrade capability to provide U.S. leadership for many decades to come. This paper will briefly review the previously described Functional Requirements, and then discuss their recent evolution., Comment: 3 pp

Published
2012

4. Project X functional requirements specification

Author

Holmes, S. D., Henderson, S. D., Kephart, R., Kerby, J., Mishra, S., Nagaitsev, S., and Tschirhart, R.

Subjects
Physics - Accelerator Physics
Abstract

Project X is a multi-megawatt proton facility being developed to support intensity frontier research in elementary particle physics, with possible applications to nuclear physics and nuclear energy research, at Fermilab. A Functional Requirements Specification has been developed in order to establish performance criteria for the Project X complex in support of these multiple missions. This paper will describe the Functional Requirements for the Project X facility and the rationale for these requirements., Comment: 3 pp. Particle Accelerator, 24th Conference (PAC'11) 28 Mar - 1 Apr 2011: New York, USA

Published
2012

8. LARP Long Nb3Sn Quadrupole Design

Author

Ambrosio, G., Andreev, N., Anerella, M., Barzi, E., Bossert, R., Caspi, S., Chlachidize, G., Dietderich, D., Feher, S., Ferracin, P., Ghosh, A., Hafalia, R., Hannaford, R., Kashikhin, V.V., Kerby, J., Lamm, M., Lietzke, A., McInturff, A., Muratore, J., Nobrega, F., Novitsky, I., Sabbi, G.L., Schmalzle, J., Tartaglia, M., Turrioni, D., Wanderer, P., Whitson, G., and Zlobin, A.V.

Published
2008

13. A mobile observatory powered by sun and wind for near real time measurements of atmospheric, glacial, terrestrial, limnic and coastal oceanic conditions in remote off-grid areas

Author

Rysgaard, S. (Søren), Bjerge, K. (Kim), Boone, W. (Wieter), Frandsen, E. (Egon), Graversen, M. (Michael), Høye, T. T. (Toke Thomas), Jensen, B. (Bjarne), Johnen, G. (Geoffrey), Jackowicz-Korczynski, M. A. (Marcin Antoni), Kerby, J. T. (Jeffrey Taylor), Kortegaard, S. (Simon), Mastepanov, M. (Mikhail), Melvad, C. (Claus), Mikkelsen, P. S. (Peter Schmidt), Mortensen, K. (Keld), Nørgaard, C. (Carsten), Poulsen, E. (Ebbe), Riis, T. (Tenna), Sørensen, L. (Lotte), Christensen, T. R. (Torben Røjle), Rysgaard, S. (Søren), Bjerge, K. (Kim), Boone, W. (Wieter), Frandsen, E. (Egon), Graversen, M. (Michael), Høye, T. T. (Toke Thomas), Jensen, B. (Bjarne), Johnen, G. (Geoffrey), Jackowicz-Korczynski, M. A. (Marcin Antoni), Kerby, J. T. (Jeffrey Taylor), Kortegaard, S. (Simon), Mastepanov, M. (Mikhail), Melvad, C. (Claus), Mikkelsen, P. S. (Peter Schmidt), Mortensen, K. (Keld), Nørgaard, C. (Carsten), Poulsen, E. (Ebbe), Riis, T. (Tenna), Sørensen, L. (Lotte), and Christensen, T. R. (Torben Røjle)

Abstract

Climate change is rapidly altering the Arctic environment. Although long-term environmental observations have been made at a few locations in the Arctic, the incomplete coverage from ground stations is a main limitation to observations in these remote areas. Here we present a wind and sun powered multi-purpose mobile observatory (ARC-MO) that enables near real time measurements of air, ice, land, rivers, and marine parameters in remote off-grid areas. Two test units were constructed and placed in Northeast Greenland where they have collected data from cabled and wireless instruments deployed in the environment since late summer 2021. The two units can communicate locally via WiFi (units placed 25 km apart) and transmit near-real time data globally over satellite. Data are streamed live and accessible from (https://gios.org). The cost of one mobile observatory unit is c. 304.000€. These test units demonstrate the possibility for integrative and automated environmental data collection in remote coastal areas and could serve as models for a proposed global observatory system.

Published
2022

14. The tundra phenology database:more than two decades of tundra phenology responses to climate change

Author

Prevéy, J. S. (Janet S.), Elmendorf, S. C. (Sarah Claire), Bjorkman, A. (Anne), Alatalo, J. M. (Juha M.), Ashton, I. (Isabel), Assmann, J. J. (Jakob J.), Björk, R. G. (Robert G.), Björkman, M. P. (Mats P.), Cannone, N. (Nicoletta), Carbognani, M. (Michele), Chisholm, C. (Chelsea), Clark, K. (Karin), Collins, C. G. (Courtney G.), Cooper, E. J. (Elisabeth J.), Elberling, B. (Bo), Frei, E. R. (Esther R.), Henry, G. R. (Gregory R.H.), Hollister, R. D. (Robert D.), Høye, T. T. (Toke Thomas), Jónsdóttir, I. S. (Ingibjörg Svala), Kerby, J. T. (Jeffrey T.), Klanderud, K. (Kari), Kopp, C. (Christopher), Levesque, E. (Esther), Mauritz, M. (Marguerite), Molau, U. (Ulf), Myers-Smith, I. H. (Isla H.), Natali, S. M. (Susan M.), Oberbauer, S. F. (Steven F.), Panchen, Z. (Zoe), Petraglia, A. (Alessandro), Post, E. (Eric), Rixen, C. (Christian), Rodenhizer, H. (Heidi), Rumpf, S. B. (Sabine B.), Schmidt, N. M. (Niels Martin), Schuur, T. (Ted), Semenchuk, P. (Philipp), Smith, J. G. (Jane Griffin), Suding, K. (Katharine), Totland, Ø. (Ørjan), Troxler, T. (Tiffany), Wahren, H. (Henrik), Welker, J. M. (Jeffrey M.), Wipf, S. (Sonja), Yang, Y. (Yue), Prevéy, J. S. (Janet S.), Elmendorf, S. C. (Sarah Claire), Bjorkman, A. (Anne), Alatalo, J. M. (Juha M.), Ashton, I. (Isabel), Assmann, J. J. (Jakob J.), Björk, R. G. (Robert G.), Björkman, M. P. (Mats P.), Cannone, N. (Nicoletta), Carbognani, M. (Michele), Chisholm, C. (Chelsea), Clark, K. (Karin), Collins, C. G. (Courtney G.), Cooper, E. J. (Elisabeth J.), Elberling, B. (Bo), Frei, E. R. (Esther R.), Henry, G. R. (Gregory R.H.), Hollister, R. D. (Robert D.), Høye, T. T. (Toke Thomas), Jónsdóttir, I. S. (Ingibjörg Svala), Kerby, J. T. (Jeffrey T.), Klanderud, K. (Kari), Kopp, C. (Christopher), Levesque, E. (Esther), Mauritz, M. (Marguerite), Molau, U. (Ulf), Myers-Smith, I. H. (Isla H.), Natali, S. M. (Susan M.), Oberbauer, S. F. (Steven F.), Panchen, Z. (Zoe), Petraglia, A. (Alessandro), Post, E. (Eric), Rixen, C. (Christian), Rodenhizer, H. (Heidi), Rumpf, S. B. (Sabine B.), Schmidt, N. M. (Niels Martin), Schuur, T. (Ted), Semenchuk, P. (Philipp), Smith, J. G. (Jane Griffin), Suding, K. (Katharine), Totland, Ø. (Ørjan), Troxler, T. (Tiffany), Wahren, H. (Henrik), Welker, J. M. (Jeffrey M.), Wipf, S. (Sonja), and Yang, Y. (Yue)

Abstract

Observations of changes in phenology have provided some of the strongest signals of the effects of climate change on terrestrial ecosystems. The International Tundra Experiment (ITEX), initiated in the early 1990s, established a common protocol to measure plant phenology in tundra study areas across the globe. Today, this valuable collection of phenology measurements depicts the responses of plants at the colder extremes of our planet to experimental and ambient changes in temperature over the past decades. The database contains 150 434 phenology observations of 278 plant species taken at 28 study areas for periods of 1–26 years. Here we describe the full data set to increase the visibility and use of these data in global analyses and to invite phenology data contributions from underrepresented tundra locations. Portions of this tundra phenology database have been used in three recent syntheses, some data sets are expanded, others are from entirely new study areas, and the entirety of these data are now available at the Polar Data Catalogue (https://doi.org/10.21963/13215).

Published
2022

15. Growth rings show limited evidence for ungulates’ potential to suppress shrubs across the Arctic

Author

Vuorinen, K. E. (Katariina E. M.), Austrheim, G. (Gunnar), Tremblay, J.-P. (Jean-Pierre), Myers-Smith, I. H. (Isla H.), Hortman, H. I. (Hans I.), Frank, P. (Peter), Barrio, I. C. (Isabel C.), Dalerum, F. (Fredrik), Björkman, M. P. (Mats P.), Björk, R. G. (Robert G.), Ehrich, D. (Dorothee), Sokolov, A. (Aleksandr), Sokolova, N. (Natalya), Ropars, P. (Pascale), Boudreau, S. (Stéphane), Normand, S. (Signe), Prendin, A. L. (Angela L.), Schmidt, N. M. (Niels Martin), Pacheco-Solana, A. (Arturo), Post, E. (Eric), John, C. (Christian), Kerby, J. (Jeff), Sullivan, P. F. (Patrick F.), Le Moullec, M. (Mathilde), Hansen, B. B. (Brage B.), van der Wal, R. (Rene), Pedersen, Å. Ø. (Åshild Ø.), Sandal, L. (Lisa), Gough, L. (Laura), Young, A. (Amanda), Li, B. (Bingxi), Magnússon, R. Í. (Rúna Í.), Sass-Klaassen, U. (Ute), Buchwal, A. (Agata), Welker, J. (Jeffrey), Grogan, P. (Paul), Andruko, R. (Rhett), Morrissette-Boileau, C. (Clara), Volkovitskiy, A. (Alexander), Terekhina, A. (Alexandra), Speed, J. D. (James D. M.), Vuorinen, K. E. (Katariina E. M.), Austrheim, G. (Gunnar), Tremblay, J.-P. (Jean-Pierre), Myers-Smith, I. H. (Isla H.), Hortman, H. I. (Hans I.), Frank, P. (Peter), Barrio, I. C. (Isabel C.), Dalerum, F. (Fredrik), Björkman, M. P. (Mats P.), Björk, R. G. (Robert G.), Ehrich, D. (Dorothee), Sokolov, A. (Aleksandr), Sokolova, N. (Natalya), Ropars, P. (Pascale), Boudreau, S. (Stéphane), Normand, S. (Signe), Prendin, A. L. (Angela L.), Schmidt, N. M. (Niels Martin), Pacheco-Solana, A. (Arturo), Post, E. (Eric), John, C. (Christian), Kerby, J. (Jeff), Sullivan, P. F. (Patrick F.), Le Moullec, M. (Mathilde), Hansen, B. B. (Brage B.), van der Wal, R. (Rene), Pedersen, Å. Ø. (Åshild Ø.), Sandal, L. (Lisa), Gough, L. (Laura), Young, A. (Amanda), Li, B. (Bingxi), Magnússon, R. Í. (Rúna Í.), Sass-Klaassen, U. (Ute), Buchwal, A. (Agata), Welker, J. (Jeffrey), Grogan, P. (Paul), Andruko, R. (Rhett), Morrissette-Boileau, C. (Clara), Volkovitskiy, A. (Alexander), Terekhina, A. (Alexandra), and Speed, J. D. (James D. M.)

Abstract

Global warming has pronounced effects on tundra vegetation, and rising mean temperatures increase plant growth potential across the Arctic biome. Herbivores may counteract the warming impacts by reducing plant growth, but the strength of this effect may depend on prevailing regional climatic conditions. To study how ungulates interact with temperature to influence growth of tundra shrubs across the Arctic tundra biome, we assembled dendroecological data from 20 sites, comprising 1153 individual shrubs and 223 63 annual growth rings. Evidence for ungulates suppressing shrub radial growth was only observed at intermediate summer temperatures (6.5 °C–9 °C), and even at these temperatures the effect was not strong. Multiple factors, including forage preferences and landscape use by the ungulates, and favourable climatic conditions enabling effective compensatory growth of shrubs, may weaken the effects of ungulates on shrubs, possibly explaining the weakness of observed ungulate effects. Earlier local studies have shown that ungulates may counteract the impacts of warming on tundra shrub growth, but we demonstrate that ungulates’ potential to suppress shrub radial growth is not always evident, and may be limited to certain climatic conditions.

Published
2022

16. The tundra phenology database: More than two decades of tundra phenology responses to climate change

Author

Prevéy, J. S., Elmendorf, S. C., Bjorkman, A., Alatalo, J. M., Ashton, I., Assmann, J. J., Björk, R. G., Björkman, M. P., Cannone, N., Carbognani, M., Chisholm, C., Clark, K., Collins, C. G., Cooper, E. J., Elberling, B., Frei, E. R., Henry, G. R. H., Hollister, R. D., Høye, T. T., Jónsdóttir, I. S., Kerby, J. T., Klanderud, K., Kopp, C., Levesque, E., Mauritz, M., Molau, U., Myers-Smith, I. H., Natali, S. M., Oberbauer, S. F., Panchen, Z., Petraglia, A., Post, E., Rixen, C., Rodenhizer, H., Rumpf, S. B., Schmidt, N. M., Schuur, T., Semenchuk, P., Smith, J. G., Suding, K., Totland, Ø, Troxler, T., Wahren, H., Welker, J. M., Wipf, S., Yang, Y., Prevéy, J. S., Elmendorf, S. C., Bjorkman, A., Alatalo, J. M., Ashton, I., Assmann, J. J., Björk, R. G., Björkman, M. P., Cannone, N., Carbognani, M., Chisholm, C., Clark, K., Collins, C. G., Cooper, E. J., Elberling, B., Frei, E. R., Henry, G. R. H., Hollister, R. D., Høye, T. T., Jónsdóttir, I. S., Kerby, J. T., Klanderud, K., Kopp, C., Levesque, E., Mauritz, M., Molau, U., Myers-Smith, I. H., Natali, S. M., Oberbauer, S. F., Panchen, Z., Petraglia, A., Post, E., Rixen, C., Rodenhizer, H., Rumpf, S. B., Schmidt, N. M., Schuur, T., Semenchuk, P., Smith, J. G., Suding, K., Totland, Ø, Troxler, T., Wahren, H., Welker, J. M., Wipf, S., and Yang, Y.

Abstract

Observations of changes in phenology have provided some of the strongest signals of the effects of climate change on terrestrial ecosystems. The International Tundra Experiment (ITEX), initiated in the early 1990s, established a common protocol to measure plant phenology in tundra study areas across the globe. Today, this valuable collec-tion of phenology measurements depicts the responses of plants at the colder extremes of our planet to experimental and ambient changes in temperature over the past decades. The database contains 150 434 phenology observations of 278 plant species taken at 28 study areas for periods of 1–26 years. Here we describe the full data set to increase the visibility and use of these data in global analyses and to invite phenology data contributions from underrepresented tundra locations. Portions of this tundra phenology database have been used in three recent syntheses, some data sets are expanded, others are from entirely new study areas, and the entirety of these data are now available at the Polar Data Catalogue (https://doi.org/10.21963/13215). Résumé Les observations des changements dans la phénologie ont fourni certains des signaux les plus forts des effets du changement climatique sur les écosystèmes terrestres. L’expérience internationale sur la toundra ITEX (International Tundra Experiment), lancée au début des années 1990, a établi un protocole commun pour mesurer la phénologie des plantes dans les zones d’étude de la toundra à travers le monde. Aujourd’hui, cette précieuse collection de mesures phénologiques décrit les réponses des plantes des régions les plus froides de notre planète aux changements expérimentaux et ambiants de température au cours des dernières décennies. La base de données contient 150 434 observations phénologiques de 278 espèces de plantes prises dans 28 zones d’étude sur des périodes allant de 1 à 26 ans. Les auteurs décrivent ici l’ensemble des données afin d’accroître la visibilité et l’utilisat

Published
2022

29. Commissioning of the low-beta triplets of the Large Hadron collider

Author

Feher, S., Darve, C., Denz, R., Garion, C., Gicquel, F., Kerby, J., Limon, P., Mathot, S., Nicol, T.H., Ostojic, R., Page, T.M., Perin, A., Peterson, T., Perez, J.C., Prin, H., Rabehl, R., Sasaki, K.-i., and Thiesen, H.

Subjects
Colliders (Nuclear physics) -- Design and construction, Superconducting magnets -- Design and construction, Company business management, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research. Large Hadron Collider -- Management
Published
2009

30. Alignment and strength measurements of the LHC interaction region quadrupole magnets

Author

DiMarco, J., Kerby, J., Lamm, M.J., Nicol, T., Page, T., Pfund, P., Schlabach, P., Sylvester, C., Tartaglia, M., Tompkins, J.C., and Velev, G.

Subjects
Particle accelerators -- Design and construction, Superconducting magnets -- Design and construction, Business, Electronics, Electronics and electrical industries
Abstract

The alignment and strength measurements of the Large Hadron Collider (LHC) interaction region quadrupole magnets are discussed. Single Stretched Wire (SSW) system was used for measuring the integrated magnet strength.

Published
2007

31. Magnetic field measurements of LHC inner triplet quadrupoles fabricated at Fermilab

Author

Velev, G.V., Bossert, R., Carcagno, R., DiMarco, J., Feher, S., Kashikhin, V.V., Kerby, J., Lamm, M., Orris, D., Schlabach, P., Strait, J., Sylvester, C., Tartaglia, M., Tompkins, J.C., and Zlobin, A.V.

Subjects
Magnetic fields -- Measurement, Particle accelerators -- Magnetic properties, Business, Electronics, Electronics and electrical industries
Abstract

The magnetic field measurements of Large Hadron Collider (LHC) inner triplet quadrupoles fabricated at Fermilab are studied. Findings reveal the observation of small harmonics of the MQXBs measured at injection and collision currents at 1.9 K.

Published
2007

33. Test results from the LQXB quadrupole production program at Fermilab for the LHC interaction regions

Author

Bossert, R., Feher, S., Nobrega, A., Lamm, M.J., Chichili, D.R., Kerby, J., and Carson, J.

Subjects
Integrated circuit fabrication -- Magnetic properties, Magnetic materials -- Testing, Superconducting magnets -- Testing, Integrated circuit fabrication, Business, Electronics, Electronics and electrical industries
Abstract

The main quadrupole magnets in the Q1 (LQXA) and Q3 (LQXC) assemblies are MQXA elements designed and fabricated by KEK and Toshiba, while those in the Q2 (LQXB) assemblies are MQXB quadrupoles designed and fabricated by Fremilab. The cold test results of LQXB02 and an overview of the magnetic measurements results of the cold masses built up to date are presented.

Published
2004

34. Alignment of production quadropole magnets for the LHC interaction regions

Author

DiMarco, J., Glass, H., Kerby, J., Lamm, M.J., Nicol, T., Page, T., Schlabach, P., Sylvester, C., Tompkins, J.C., and Velev, G.

Subjects
Cryostat -- Research, Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Progress is reported involving production of quadropole magnets for the Large Hadron Collider (LHC) interaction regions.

Published
2003

35. Splice testing for LHC quadrupole magnets

Author

Barzi, E., Bossert, R., Feher, S., Kerby, J., Kashikhin, V.V., Lamm, M.J., Orris, D., Ray, G., Tartaglia, M., and Zlobin, A.V.

Subjects
Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Splices for the Large Hadron Collider (LHC) interaction regions (IR) were tested at Fermilab.

Published
2003

36. Construction experience with MQXB quadrupole magnets built at Fermilab for the LHC interaction regions

Author

Bossert, R., Kerby, J., Nobrega, F., Lamm, M. J., Rife, J., Feher, S., Robotham, W., Schlabach, P., Yadav, S., and Zlobin, A.B.

Subjects
Particle accelerators -- Research, Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Full size production quadrupole cold masses for the LHC inner triplets are described and discussed.

Published
2003

37. Field measurement of a Fermilab-built full scale prototype quadrupole magnet for the LHC interaction regions

Author

Bossert, R., Cargagno, R., DiMarco, J., Feher, S., Glass, H., Kerby, J., Lamm, M.J., Nobrega, A., Nicol, T., Ogitsu, T., Orris, D., Page, T., Rabehl, R., Sabbi, G., Schlabach, P., Strait, J., Sylvester, C., Tartaglia, M., Tompkins, J.C., Velev, G., and Zlobin, A.V.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Research, Particle accelerators -- Research, Nuclear industry -- Research, Industrial equipment and supplies industry -- Research, Superconducting magnets -- Research, Electrical equipment and supplies industry -- Research, Magnetic fields -- Research, Electrical engineering, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Conferences, meetings and seminars
Abstract

A full-lenth prototype of MQXB magnets for the Large Hadron Collider (LHC) interaction region has been constructed and tested at Fermilab. Results, together with field quality and alignment requirements, are reported and discussed.

Published
2002

38. Quench performance and mechanical behavior of the first Fermilab-built prototype high gradient quadrupole for the LHC interaction regions

Author

Andreev, N., Arkan, T., Bauer, P., Bossert, R., Brandt, J., Carson, J., Caspi, S., Chichili, D.R., DiMarco, J., Feher, S., Ghosh, A., Glass, H., Kerby, J., Lamm, M.J., Makarov, A., McInturff, A.D., Nicol, T., Nobrega, A., Novitski, I., Orris, D., Peterson, T., Rabehl, R., Robotham, W., Scanlan, R., Schlabach, P., Sylvester, C., Strait, J., tartaglia, M., Tompkins, J.C., Velev, G., Yadav, S., and Zlobin, A.V.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Research, Superconducting magnets -- Research, Electrical equipment and supplies industry -- Research, Particle accelerators -- Research, Nuclear industry -- Research, Industrial equipment and supplies industry -- Research, Magnets -- Research, Electrical engineering, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Research
Abstract

Test results for a prototype quadrupole magnet, developed for the inner triplet Large Hadron Collider (LHC), are discussed. Quench performance indicates that the production procedure is well controlled and production tooling is adequate.

Published
2002

39. Quench protection of the Fermilab-built LHC inner triplet quadrupole MQX

Author

Bossert, R., Carccagno, R., Chiesa, L., Feher, S., Kerby, J., Lamm, M.J., Nobrega, A., Orris, D., Schlabach, P., Tartaglia, M., Tompkins, J.C., and Zlobin, A.V.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Research, Superconducting magnets -- Research, Electrical equipment and supplies industry -- Research, Particle accelerators -- Research, Nuclear industry -- Research, Industrial equipment and supplies industry -- Research, Electrical engineering, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Conferences, meetings and seminars
Abstract

High-gradient quadrupoles (MQXB) for the Large Hadron Collider (LHC) are being developed at Fermilab. Results of quench-protection studies on the first full-length MQXB prototype (MQXP01) are reported.

Published
2002

40. Quench performance of Fermilab model magnets for the LHC inner triplet quadrupoles

Author

Tompkins, J.C.; Orris, D.; Feher, S.; Andreev, N., Velev, G.; Ozelis, J.P.; Ghosh, A.; Arkan, T., Yadav, S.; Peterson, T.; Glass, H.; Bauer, P., Zlobin, A.V.; Rabehl, R.; Kerby, J.; Bossert, R., Robotham, W.; Lamm, M.J.; Brandt, J., Scanlan, R.; Makarov, A.; Carson, J., Schlabach, P.; McInturff, A.D.; Caspi, S., Sylvester, C.; Nobrega, A.; Chichili, D.R., Strait, J.; Novitski, I.; Chiesa, L., and Tartaglia, M.; Ogitsu, T.; DiMarco, J.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Research, Superconducting magnets -- Research, Superconductivity -- Equipment and supplies, Business, Electronics, Electronics and electrical industries
Abstract

Research is presented describing the measurement of quenches in model magnets for the Large Hadron Collider (LHC) inner triplet quadrupoles, being developed and tested by the Fermi National Accelerator Laboratory. The model superconducting quadrupoles are 2m long with 70mm diameter bores.

Published
2001

41. Busbar studies for the LHC interaction region quadrupoles

Author

Bauer, P., Chiesa, L., Feher, S., Kerby, J., Lamm, M., Orris, D., Sylvester, C., Tompkins, J.C., and Zlobin, A.V.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Equipment and supplies, Bus conductors (Electricity) -- Research, Superconducting magnets -- Research, Superconductivity -- Equipment and supplies, Business, Electronics, Electronics and electrical industries, High Energy Acceleration Research Organization -- Equipment and supplies
Abstract

Research is presented describing studies conducted to find the most suitable busbar design for Large Hadron Collider (LHC) interaction region (IR) magnets. The Fermi National Accelerator Laboratory and the High Energy Acceleration Research Organization are developing the superconducting quadrupole magents for the LHC IR.

Published
2001

42. Thermal studies of a high gradient quadrupole magnet cooled with pressurized, stagnant superfluid

Author

Chiesa, L., Feher, S., Kerby, J., Lamm, M., Novitski, I., Orris, D., Ozelis, J.P., Peterson, T.J., Tartaglia, M., and Zlobin, A.V.

Subjects
Low temperature engineering -- Research, Superconducting magnets -- Measurement, Superconductivity -- Measurement, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Research
Abstract

Research is presented describing measurement studies of a high-gradient quadrupole magnet that has been cooled with stagnant, pressurized, superfluid. The studies were conducted on a 2-m long superconducting model of the Large Hadron Collider interaction region quadrupole magnet at the European Organization for Nuclear Research (CERN).

Published
2001

43. Field quality in Fermilab-built models of quadrupole magnets for the LHC interaction region

Author

Tartaglia, M.; Orris, D.; Ghosh, A.; Andreev, N., Tompkins, J.C.; Ozelis, J.P.; Glass, H.; Arkan, T., Velev, G.; Peterson, T.; Kashikhin, V.V.; Bauer, P., Yadav, S.; Rabehl, R.; Kerby, J.; Bossert, R., Zlobin, A.V.; Robotham, W.; Lamm, M.J.; Brandt, J., Sabbi, G.; McInturff, A.D.; Caspi, S., Scanlan, R.; Makarov, A.A.; Chichili, D.R., Schlabach, P.; Nobrega, A.; Carson, J., Sylvester, C.; Novitski, I.; DiMarco, J., and Strait, J.; Ogitsu, T.; Feher, S.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Equipment and supplies, Magnetic fields -- Research, Superconductivity -- Equipment and supplies, Business, Electronics, Electronics and electrical industries
Abstract

The US-LHC Accelerator Project is developing superconducting quadrupole magnets specifically for Large Hadrom Collider's interaction regions. Models of the magnets have been built in order to study their performance, and the results are presented and compared with the field quality required.

Published
2001

44. Status of the LHC inner triplet quadropole program at Fermilab

Author

Scanlan, R.; Nobrega, A.; Dimarco, J.; Andreev, N., Schlabach, P.; Novitski, I.; Feher, S.; Arkan, T., Sylvester, P.; Ogitsu, T.; Ghosh, A.; Bauer, P., Strait, J.; Orris, D.; Glass, H.; Bossert, R., Tartaglia, M.; Ozelis, J.P.; Huang, Y.; Brandt, J., Tompkins, J.C.; Page, T.; Kerby, J.; Carson, J., Velev, G.; Peterson, T.; Lamm, M.; Caspi, S., Yadav, S.; Rabehl, R.; Markarov, A.A.; Chichili, D.R., Zlobin, A.V.; Robotham, W.; McInturff, A.D.; Chiesa, L., and Sabbi, G.; Nicol, T.; Darve, C.

Subjects
United States. Department of Energy. Fermi National Accelerator Laboratory -- Equipment and supplies, Cryonics -- Equipment and supplies, Superconductivity -- Measurement, Business, Electronics, Electronics and electrical industries
Abstract

The Fermi National Accelerator Laboratory (Fermilab) is developing an inner triplet quadrupole for the Large Hadron Collider at the European Laboratory for Nuclear Research (CERN) in Switzerland. The magnet must have a 215 T/m gradient across a 70mm coil bore, and should operate at 1.9K in superfluid helium.

Published
2001

45. Analysis of parameters affecting beam gauge performance

Author

Yadav, S., Kerby, J., and Ozelis, J.P.

Subjects
Finite element method -- Usage, Transducers -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Issues affecting beam gauge performance are analyzed and a finite element model was developed.

Published
2000

46. Quench behavior of quadruople model magnets for the LHC inner triplets at Fermilab

Author

Andreev, N., Arkan, T., Bauer, P., Bossert, R., Brandt, J., Chichili, D.R., Carson, J., DiMarco, J., Feher, s., Glass, H., Kerby, J., Lamm, M.J., Makarov, A., Nobrega, a., Novitski, I., Ogitsu, T., Orris, D., Ozelis, J.P., Rabehl, R., Robotham, W., Sabbi, G., Schlabach, P., Sylvester, C., Strait, J., Tartaglia, M., Tomplins, J.C., Yadav, S., Zlobin,a.V., Caspi, S., McInturff, A.D., Scanlan, R., and Ghosh, A.

Subjects
Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The LHC inner triplets at Fermilab were investigated with regard to quench behavior of quadrupole model magnets.

Published
2000

47. Mechanical design and analysis of LHC inner triplet quadruople magnets at Fermilab

Author

Andreev, N., Arkan, T., Bossert, R., Chichili, D.R., Feher, s., Kerby, J., Lamm, M.J., Makarov, A., Nobrega, A., Novitski, I., Orris, D., Ozelis, J.P., Tartaglia, M., Tompkins, J.c., Yadav, S., and Zlobin, A.v.

Subjects
Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The design and analysis of LHC inner triplet quadruople magnets at Fermilab is discussed.

Published
2000

48. Field quality in Fermilab-built models of high gradient quadrupole magnets for the LHC interaction regions

Author

Andreev, N., Arkan, T., Bauer, P., Bossert, R., Brandt, J., Chichili, D.R., Carson, J., DiMarco, J., Feher, S., Glass, H., Kerby, J., Lamm, M.J., Makarov, A.a., Nobrega, A., Novitski, I., Ogitsu, T., Orris, D., Ozelis, J.P., Peterson, T., Rabehl, R., Robotham, W., Sabbi, G., Schlabach, P., Sylvester, C., Strait, J., Tartaglia, M., Tompkins, J.C., Yadav, S., Zlobin, A.V., Caspi, S., McInturff, D., Scanlan, R., and Ghosh, A.

Subjects
Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The development of the superconducting quadrupole magnets for the interaction areas of the Large Hadron Collider is examined.

Published
2000

49. Study of Kapton insulating superconducting coils manufactured for the LHC inner triplet model magnets at Fermilab

Author

Andreev, N., Arkan, T., Bossert, R., Brandt, J., Chichili, D.R., Kerby, J., Nobrega, A., Novitski, I., Ozelis, J., Yadav, S., and Zlobin, A.v.

Subjects
Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The manufacture of Kapton insulated superconducting coils for the LHC inner triple model magnets at Fermilab is discussed.

Published
2000

50. Recent results from the LHC inner triplet quadrupole development program at Fermilab

Author

Andreev, N., Arkan, T.t., Bauer, P., Bossert, R., Brandt, J., Chichili, D.R., Carson, J., DiMarco, J., Feher, S., Kerby, J., Lamm, M.J., Limon, P.J., Makarov, A., Nobrega, A., Novitski, I., Ogitsu, T., Orris, D., Ozelis, J.P., Robotham, W., Sabbi, G., Schlabach, P., Strait, J., Tartaglia, M., Tompkins, J.C., Yadav, s., Zlobin, A.V., Caspi, S., McInturff, A.D., Scanlan, R., and Ghosh, a.

Subjects
Hadrons -- Usage, Superconductors -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The Large Hadron Collider Inner Triple Quadrupole Development Program at Fermilab is discussed.

Published
2000

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