المؤلفون: Adams, DQ, Alduino, C, Alfonso, K, Avignone, FT, Azzolini, O, Bari, G, Bellini, F, Benato, G, Beretta, M, Biassoni, M, Branca, A, Brofferio, C, Bucci, C, Camilleri, J, Caminata, A, Campani, A, Canonica, L, Cao, XG, Capelli, S, Capelli, C, Cappelli, L, Cardani, L, Carniti, P, Casali, N, Celi, E, Chiesa, D, Clemenza, M, Copello, S, Cremonesi, O, Creswick, RJ, D'Addabbo, A, Dafinei, I, Del Corso, F, Dell'Oro, S, Di Domizio, S, Di Lorenzo, S, Dompè, V, Fang, DQ, Fantini, G, Faverzani, M, Ferri, E, Ferroni, F, Fiorini, E, Franceschi, MA, Freedman, SJ, Fu, SH, Fujikawa, BK, Ghislandi, S, Giachero, A, Gianvecchio, A, Gironi, L, Giuliani, A, Gorla, P, Gotti, C, Gutierrez, TD, Han, K, Hansen, EV, Heeger, KM, Huang, RG, Huang, HZ, Johnston, J, Keppel, G, Kolomensky, Yu G, Kowalski, R, Li, M, Liu, R, Ma, L, Ma, YG, Marini, L, Maruyama, RH, Mayer, D, Mei, Y, Morganti, S, Napolitano, T, Nastasi, M, Nikkel, J, Nones, C, Norman, EB, Nucciotti, A, Nutini, I, O'Donnell, T, Olmi, M, Ouellet, JL, Pagan, S, Pagliarone, CE, Pagnanini, L, Pallavicini, M, Pattavina, L, Pavan, M, Pessina, G, Pettinacci, V, Pira, C, Pirro, S, Pozzi, S, Previtali, E, Puiu, A, Quitadamo, S, Ressa, A, Rosenfeld, C, Sangiorgio, S

المصدر: Journal of Instrumentation. 17(11)

مصطلحات موضوعية: Nuclear and Plasma Physics, Synchrotrons and Accelerators, Physical Sciences, Cryogenic detectors, Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter etc), Double-beta decay detectors, Engineering, Nuclear & Particles Physics, Physical sciences

الوصف: The Cryogenic Underground Observatory for Rare Events (CUORE) is the most sensitive experiment searching for neutrinoless double-beta decay (0νββ) in 130Te. CUORE uses a cryogenic array of 988 TeO2 calorimeters operated at ∼10 mK with a total mass of 741 kg. To further increase the sensitivity, the detector response must be well understood. Here, we present a non-linear thermal model for the CUORE experiment on a detector-by-detector basis. We have examined both equilibrium and dynamic electro-thermal models of detectors by numerically fitting non-linear differential equations to the detector data of a subset of CUORE channels which are well characterized and representative of all channels. We demonstrate that the hot-electron effect and electric-field dependence of resistance in NTD-Ge thermistors alone are inadequate to describe our detectors' energy-dependent pulse shapes. We introduce an empirical second-order correction factor in the exponential temperature dependence of the thermistor, which produces excellent agreement with energy-dependent pulse shape data up to 6 MeV. We also present a noise analysis using the fitted thermal parameters and show that the intrinsic thermal noise is negligible compared to the observed noise for our detectors.

وصف الملف: application/pdf

URL الوصول: https://escholarship.org/uc/item/7wx8013f

المؤلفون: Acharya, S., Basu, S., Christiansen, P., Hansen, J., Iversen, K.E., Matonoha, O., Nassirpour, A.F., Ohlson, A., Silvermyr, D., Staa, J., Vislavicius, V., Zugravel, S.C., Zurlo, N.

المصدر: Journal of Instrumentation eSSENCE: The e-Science Collaboration. 18(11)

مصطلحات موضوعية: Analysis and statistical methods, Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc), Large detector systems for particle and astroparticle physics, Particle tracking detectors, Budget control, Charged particles, Computer software, Hadrons, Uncertainty analysis, Analyse and statistical method, Astroparticle physics, Detector modeling, Detector modeling and simulation I (interaction of radiation with matter, interaction of photon with matter, interaction of hadron with matter, Detector simulations, Detector systems, Interaction of radiation with matter, Large detector system for particle and astroparticle physic, Large detectors, Model and simulation, Particle tracking, Particle tracking detector, Tracking detectors, Photons, Naturvetenskap, Fysik, Subatomär fysik, Natural Sciences, Physical Sciences, Subatomic Physics

الوصف: The knowledge of the material budget with a high precision is fundamental for measurements of direct photon production using the photon conversion method due to its direct impact on the total systematic uncertainty. Moreover, it influences many aspects of the charged-particle reconstruction performance. In this article, two procedures to determine data-driven corrections to the material-budget description in ALICE simulation software are developed. One is based on the precise knowledge of the gas composition in the Time Projection Chamber. The other is based on the robustness of the ratio between the produced number of photons and charged particles, to a large extent due to the approximate isospin symmetry in the number of produced neutral and charged pions. Both methods are applied to ALICE data allowing for a reduction of the overall material budget systematic uncertainty from 4.5% down to 2.5%. Using these methods, a locally correct material budget is also achieved. The two proposed methods are generic and can be applied to any experiment in a similar fashion. © 2023 CERN for the benefit of the Alice collaboration.

URL الوصول: https://lup.lub.lu.se/record/36b42b87-c2e6-4cb0-8144-ac7cc5f24540
http://dx.doi.org/10.1088/1748-0221/18/11/P11032

المؤلفون: Marcer, G., Zohar, A., Dal Molin, A., Rebai, M., Nocente, M., Panontin, E., Croci, G., Gorini, G., Grosso, G., Muraro, A., Cippo, E. Perelli, Putignano, O., Luna, E. de la, Ghani, Z., Conroy, Sean, Garcia, J., Kazakov, Y., Kiptily, V., Maslov, M., Nave, M. F. F., Ongena, J., Tardocchi, M., Contributors, J E T

المصدر: Journal of Instrumentation. 18

مصطلحات موضوعية: Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc), Gamma detectors (scintillators, CZT, HPGe, HgI etc), Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)

الوصف: A single gamma-ray spectrometer installed at the end of a collimator can be used to infer the total emission from a tokamak plasma if the transport of gamma-rays from the plasma to the detector is known. In such analysis, the plasma emission profile plays a fundamental role, since it impacts the fraction of plasma volume intercepted by the detector line of sight. In this work, the DT 17 MeV fusion gamma-rays emission profile of the JET discharge #99608 from second 46 to 48 has been estimated both with the TRANSP code and reconstructed through tomographic inversion based on the neutron camera data, assuming that fusion gamma-rays have the same profile as the 14 MeV fusion neutrons. The gamma-ray transport has been evaluated both by MonteCarlo simulations and analytical calculations. By combining MonteCarlo and analytical evaluations of the gamma-ray transport in different ways with the estimated radiation emission profile, we provide four different routes to determine the total gamma-ray yield from measurements whose results agree within better than 10%.

وصف الملف: electronic

URL الوصول: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-508576
https://uu.diva-portal.org/smash/get/diva2:1785916/FULLTEXT01.pdf

المؤلفون: Povoli, M., Kok, A., Koybasi, O., Getz, M., ONeill, G., Roehrich, D., Monakhov, E., Pedersen, Henrik, Birch, Jens, Choolakkal, Arun Haridas, Kanaki, K., Lai, C. -C., Hall-Wilton, R., Slavicek, T., Jansa, I. Llamas

المصدر: Journal of Instrumentation. 18(1)

مصطلحات موضوعية: Neutron detectors (cold, thermal, fast neutrons), Solid state detectors, Detector mod-elling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc, ), Detector modelling and simulations II (electric fields, charge transport, multiplication and induction, pulse formation, electron emission

الوصف: Neutron detection is of great importance in many fields spanning from scientific research, to nuclear science, and to medical application. The development of silicon-based neutron detectors with enhanced neutron detection efficiency can offer several advantages such as spatial resolution, enhanced dynamic range and background discrimination. In this work, increased detection efficiency is pursued by fabricating high aspect ratio 3D micro-structures filled with neutron converting materials (B4C) on planar silicon detectors. An in-depth feasibility study was carried out in all aspects of the sensor fabrication technology. Passivation of the etched structures was studied in detail, to ensure good electrical performance. The conformal deposition of B4C with a newly developed process showed excellent results. Preliminary electrical characterisation of the completed devices is promising, and detectors have been mounted on dedicated boards in view of the upcoming tests with neutrons.

وصف الملف: electronic

URL الوصول: https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-192958
https://liu.diva-portal.org/smash/get/diva2:1750012/FULLTEXT01.pdf

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