WFRF:(Cavallaro R.)
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Beam test measurements of Low Gain Avalanche Detector single pads and arrays for the ATLAS High Granularity Timing Detector
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- Allaire, C. (författare)
- Univ Paris Saclay, Univ Paris Sud, CNRS IN2P3, LAL, Orsay, France.
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- Benitez, J. (författare)
- Univ Iowa, Iowa City, IA USA.
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- Bomben, M. (författare)
- UPMC, Lab Phys Nucl & Hautes Energies, Paris, France.;Univ Paris Diderot, Paris, France.;CNRS IN2P3, Paris, France.
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- Univ Paris Saclay, Univ Paris Sud, CNRS IN2P3, LAL, Orsay, France Univ Iowa, Iowa City, IA USA. (creator_code:org_t)
- Institute of Physics (IOP), 2018
- 2018
- Engelska.
- Ingår i: Journal of Instrumentation. - : Institute of Physics (IOP). - 1748-0221. ; 13
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- For the high luminosity upgrade of the LHC at CERN, ATLAS is considering the addition of a High Granularity Timing Detector (HGTD) in front of the end cap and forward calorimeters at vertical bar z vertical bar = 3:5 m and covering the region 2:4 < vertical bar eta vertical bar < 4 to help reducing the effect of pile-up. The chosen sensors are arrays of 50 mu m thin Low Gain Avalanche Detectors (LGAD). This paper presents results on single LGAD sensors with a surface area of 1.3 x 1.3 mm(2) and arrays with 2 x 2 pads with a surface area of 2 x 2 mm(2) or 3 x 3 mm(2) each and different implant doses of the p(+) multiplication layer. They are obtained from data collected during a beam test campaign in autumn 2016 with a pion beam of 120 GeV energy at the CERN SPS. In addition to several quantities measured inclusively for each pad, the gain, efficiency and time resolution have been estimated as a function of the position of the incident particle inside the pad by using a beam telescope with a position resolution of few mu m. Different methods to measure the time resolution are compared, yielding consistent results. The sensors with a surface area of 1.3 x 1.3 mm(2) have a time resolution of about 40 ps for a gain of 20 and of about 27 ps for a gain of 50 and fulfil the HGTD requirements. Larger sensors have, as expected, a degraded time resolution. All sensors show very good efficiency and time resolution uniformity.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
Nyckelord
- Si microstrip and pad detectors
- Solid state detectors
- Timing detectors
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- ref (ämneskategori)
- art (ämneskategori)
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- Allaire, C.
- Benitez, J.
- Bomben, M.
- Calderini, G.
- Carulla, M.
- Cavallaro, E.
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- Falou, A.
- Flores, D.
- Freeman, P.
- Galloway, Z.
- Gkougkousis, E. ...
- Grabas, H.
- Grinstein, S.
- Gruey, B.
- Guindon, S.
- Correia, A. M. H ...
- Hidalgo, S.
- Kastanas, Konsta ...
- Labitan, C.
- Lacour, D.
- Lange, J.
- Lanni, F.
- Lenzi, B.
- Luce, Z.
- Makovec, N.
- Marchiori, G.
- Masetti, L.
- Merlos, A.
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- Nikolic-Audit, I
- Pellegrini, G.
- Polifka, R.
- Quirion, D.
- Rummler, A.
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- Seiden, A.
- Serin, L.
- Simion, S.
- Spencer, E.
- Trincaz-Duvoid, ...
- Wilder, M.
- Zatserklyaniy, A ...
- Zerwasa, D.
- Zhao, Y.
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