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Your search keyword '"Agramunt Ros, J."' showing total 2 results
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2 results on '"Agramunt Ros, J."'

1. First tests of the applicability of gamma-ray imaging for background discrimination in time-of-flight neutron capture measurements

Author

Magán, D. L. Pérez, Caballero-Ontanaya, L., Domingo-Pardo, C., Agramunt-Ros, J., Albiol, F., Casanovas, A., González, A., Guerrero, C., Lerendegui-Marco, J., Tarifeño-Saldivia, A., Collaboration, the n_TOF, Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia, and Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear

Subjects
Nuclear and High Energy Physics, Photomultiplier, Physics - Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Nuclear physics, 01 natural sciences, law.invention, 99-00, Total energy detectors, Optics, Data acquisition, Raigs gamma, law, 0103 physical sciences, γ-ray imaging, msc:00-01, Detectors and Experimental Techniques, Facility n-tof, 010306 general physics, Instrumentation, Nuclear Experiment, Neutron capture cross-sections, Gamma camera, Physics, Neutrons, 010308 nuclear & particles physics, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Time-of-flight method, Data-acquisition system, Neutron radiation, Sample (graphics), Pulse-height weighting technique, Neutron capture, Time of flight, gamma-ray imaging, Cern, Pinhole (optics), Física::Física molecular [Àrees temàtiques de la UPC], Física nuclear, business, Simulation
Abstract

In this work we explore for the first time the applicability of using $\gamma$-ray imaging in neutron capture measurements to identify and suppress spatially localized background. For this aim, a pinhole gamma camera is assembled, tested and characterized in terms of energy and spatial performance. It consists of a monolithic CeBr$_3$ scintillating crystal coupled to a position-sensitive photomultiplier and readout through an integrated circuit AMIC2GR. The pinhole collimator is a massive carven block of lead. A series of dedicated measurements with calibrated sources and with a neutron beam incident on a $^{197}$Au sample have been carried out at n_TOF, achieving an enhancement of a factor of two in the signal-to-background ratio when selecting only those events coming from the direction of the sample., Comment: Preprint submitted to Nucl. Instr. and Meth. A

2. Digital pulse-timing technique for the neutron detector array NEDA

Author

V. Modamio, G. Jaworski, A. Triossi, Marek Moszynski, A. Gadea, T. Hüyük, S. Erturk, Johan Nyberg, Vicente González, Enrique Sanchis, J. J. Valiente-Dobón, A. Di Nitto, J. Kownacki, M. Palacz, J. Egea, J. Agramunt Ros, G. de Angelis, M. N. Erduran, R. Wadsworth, P. A. Söderström, 0-Belirlenecek, Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Triossi, Andrea -- 0000-0001-5140-9154, Millan, Vicente Gonzalez -- 0000-0001-6014-2586, Jaworski, Grzegorz -- 0000-0003-2241-0329, Gadea, Andres -- 0000-0002-4233-1970, Di Nitto, Antonio -- 0000-0002-9319-366X, SANCHIS, ENRIQUE -- 0000-0002-9689-9131, Huyuk, Tayfun -- 0000-0003-0597-9767, Soderstrom, Par-Anders -- 0000-0002-9504-2814, de France, Gilles -- 0000-0002-7439-1759, [Modamio, V. -- Valiente-Dobon, J. J. -- Triossi, A. -- de Angelis, G.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy -- [Jaworski, G.] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland -- [Jaworski, G. -- Kownacki, J. -- Palacz, M.] Univ Warsaw, Heavy Ion Lab, PL-02093 Warsaw, Poland -- [Hueyuek, T. -- Egea, J. -- Agramunt Ros, J. -- Gadea, A.] Univ Valencia, CSIC, Inst Fis Corpuscular, E-46980 Valencia, Spain -- [Egea, J. -- Gonzalez, V. -- Sanchis, E.] Univ Valencia, Dept Elect Engn, E-46100 Burjassot, Spain -- [Di Nitto, A.] Johannes Gutenberg Univ Mainz, D-55099 Mainz, Germany -- [Soederstroem, P. -A.] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan -- [de France, G.] CEA, GANIL, DSAM, F-14076 Caen, France -- [de France, G.] IN2P3, CNRS, F-14076 Caen, France -- [Erduran, M. N.] Istanbul Sabahattin Zaim Univ, Fac Engn & Nat Sci, TR-34303 Cerrahpasa, Turkey -- [Erturk, S.] Nigde Univ, Fen Edebiyat Falkultesi, Fiz Bolumu, TR-51240 Nigde, Turkey -- [Moszynski, M.] Natl Ctr Nucl Res, PL-05400 Otwock, Poland -- [Nyberg, J.] Uppsala Univ, Dept Phys & Astron, SE-75120 Uppsala, Sweden -- [Wadsworthm, R.] Univ York, Dept Phys, York YO1 5DD, N Yorkshire, England, Modamio, V., Valiente-Dobon, J. J., Jaworski, G., Huyuk, T., Triossi, A., Egea, J., Di Nitto, A., Soderstrom, P. -A., Agramunt Ros, J., De Angelis, G., De France, G., Erduran, M. N., Erturk, S., Gadea, A., Gonzalez, V., Kownacki, J., Moszynski, M., Nyberg, J., Palacz, M., Sanchis, E., and Wadsworth, R.

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Liquid scintillator, Physics::Instrumentation and Detectors, business.industry, Neutron detector, Detector, Constant fraction discriminator, NEDA, Zero crossing, Particle detector, Optics, Digital timing, Sampling (signal processing), BC501A, Scintillation counter, Neutron detection, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], business, Instrumentation, ComputingMilieux_MISCELLANEOUS
Abstract

WOS: 000348040900011, A new digital pulse-timing algorithm, to be used with the future neutron detector array NEDA, has been developed and tested. The time resolution of four 5 in diameter photomultiplier tubes (XP4512, R4144, R11833-100, and ET9390-kb), coupled to a cylindrical 5 in by 5 in BC501A liquict scintillator detector was measured by employing digital sampling electronics and a constant fraction discriminator (CFD) algorithm. The zero crossing of the CM algorithm was obtained with a cubic spline interpolation, which was continuous up to the second derivative. The performance of the algorithm was studied at sampling rates of 500 MS/s and 200 MS/s. The time resolution obtained with the digital electronics was compared to the values acquired with a standard analog CFD. The result of this comparison shows that the time resolution from the analog and the digital measurements at 500 MS/s and at 200 MS/s are within 15% for all the tested photomultiplier tubes. (C) 2014 Elsevier B.V. All rights reserved., Generalitat Valenciana, Spain [PROMETEO/2010/101, PROMETEO/2014/019]; MINECO, Spain [AIC-D-2011-0746, FPA2011-29854, FPA2012-33560]; STFC, UK; Swedish Research Council; Science and Technology Facilities Council [ST/L005727/1, ST/L005735/1, ST/J000124/1], Work partially supported by the Generalitat Valenciana, Spain, under grant PROMETEO/2010/101 and PROMETEO/2014/019, by MINECO, Spain, under grants AIC-D-2011-0746, FPA2011-29854 and FPA2012-33560, by the STFC, UK and by the Swedish Research Council.

Published
2015
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