Upgraded Readout Electronics for the ATLAS Liquid Argon Calorimeters at the High Luminosity LHC

被引:2
作者
Andeen, Timothy R. [1 ]
机构
[1] Columbia Univ, Nevis Lab, New York, NY 10027 USA
来源
XVTH INTERNATIONAL CONFERENCE ON CALORIMETRY IN HIGH ENERGY PHYSICS (CALOR2012) | 2012年 / 404卷
关键词
D O I
10.1088/1742-6596/404/1/012061
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The ATLAS liquid-argon calorimeters produce a total of 182,486 signals which are digitized and processed by the front-end and back-end electronics at every triggered event. In addition, the front-end electronics sum analog signals to provide coarsely grained energy sums, called trigger towers, to the first-level trigger system, which is optimized for nominal LHC luminosities. However, the pile-up background expected during the high luminosity phases of the LHC will be increased by factors of 3 to 7. An improved spatial granularity of the trigger primitives is therefore proposed in order to improve the identification performance for trigger signatures, like electrons or photons, at high background rejection rates. For the first upgrade phase in 2018, new Liquid Argon Trigger Digitizer Boards are being designed to receive higher granularity signals, digitize them on detector and send them via fast optical links to a new, off-detector digital processing system. The digital processing system applies digital filtering and identifies significant energy depositions. The refined trigger primitives are then transmitted to the first level trigger system to extract improved trigger signatures. The general concept of the upgraded liquid-argon calorimeter readout together with the various electronics components to be developed for such a complex system is presented. The research activities and architectural studies undertaken by the ATLAS Liquid Argon Calorimeter Group are described, particularly details of the on-going design of mixed-signal front-end electronics, of radiation tolerant optical-links, and of the high-speed off-detector digital processing system.
引用
收藏
页数:6
相关论文
共 4 条
  • [1] Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
    Aad, G.
    Abajyan, T.
    Abbott, B.
    Abdallah, J.
    Khalek, S. Abdel
    Abdelalim, A. A.
    Abdinov, O.
    Aben, R.
    Abi, B.
    Abolins, M.
    AbouZeid, U. S.
    Abramowicz, H.
    Abreu, H.
    Acharya, B. S.
    Adamczyk, L.
    Adams, D. L.
    Addy, T. N.
    Adelman, J.
    Adomeit, S.
    Adragna, P.
    Adye, T.
    Aefsky, S.
    Aguilar-Saavedra, J. A.
    Agustoni, M.
    Aharrouche, M.
    Ahlen, S. P.
    Ahles, F.
    Ahmad, A.
    Ahsan, M.
    Aielli, G.
    Akdogan, T.
    Akesson, T. P. A.
    Akimoto, G.
    Akimov, A. V.
    Alam, M. S.
    Alam, M. A.
    Albert, J.
    Albrand, S.
    Aleksa, M.
    Aleksandrov, I. N.
    Alessandria, F.
    Alexa, C.
    Alexander, G.
    Alexandre, G.
    Alexopoulos, T.
    Alhroob, M.
    Aliev, M.
    Alimonti, G.
    Alison, J.
    Allbrooke, B. M. M.
    [J]. PHYSICS LETTERS B, 2012, 716 (01) : 1 - 29
  • [2] The ATLAS Experiment at the CERN Large Hadron Collider
    Aad, G.
    Abat, E.
    Abdallah, J.
    Abdelalim, A. A.
    Abdesselam, A.
    Abdinov, O.
    Abi, B. A.
    Abolins, M.
    Abramowicz, H.
    Acerbi, E.
    Acharya, B. S.
    Achenbach, R.
    Ackers, M.
    Adams, D. L.
    Adamyan, F.
    Addy, T. N.
    Aderholz, M.
    Adorisio, C.
    Adragna, P.
    Aharrouche, M.
    Ahlen, S. P.
    Ahles, F.
    Ahmad, A.
    Ahmed, H.
    Aielli, G.
    Akesson, P. F.
    Akesson, T. P. A.
    Alam, S. M.
    Albert, J.
    Albrand, S.
    Aleksa, M.
    Aleksandrov, I. N.
    Aleppo, M.
    Alessandria, F.
    Alexa, C.
    Alexander, G.
    Alexopoulos, T.
    Alimonti, G.
    Aliyev, M.
    Allport, P. P.
    Allwood-Spiers, S. E.
    Aloisio, A.
    Alonso, J.
    Alves, R.
    Alviggi, M. G.
    Amako, K.
    Amaral, P.
    Amaral, S. P.
    Ambrosini, G.
    Ambrosio, G.
    [J]. JOURNAL OF INSTRUMENTATION, 2008, 3
  • [3] [Anonymous], 2011, Tech. Rep. CERN-LHCC-2011-012 and LHCCI-020
  • [4] [Anonymous], 15 INT C CAL HIGH EN