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Title: Neutron irradiation and electrical characterisation of the first 8” silicon pad sensor prototypes for the CMS calorimeter endcap upgrade

Journal Article · · JINST
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  1. Bogazici U.
  2. GTU, Tbilisi
  3. Unlisted
  4. Texas Tech.
  5. Iowa U.
  6. Carnegie Mellon U.
  7. CERN
  8. IISER, Pune
  9. Fermilab
  10. DESY
  11. Maryland U.
  12. Natl. Tech. U., Athens
  13. Wisconsin U., Madison
  14. Rochester U.
  15. Ecole Polytechnique
  16. Indian Inst. Tech., Madras
  17. Vienna, OAW
  18. Ec. Polytech., OMEGA
  19. IRFU, Saclay
  20. Northwestern U.
  21. Calcutta, VECC
  22. Imperial Coll., London
  23. Hamburg U.
  24. Florida State U., Tallahassee (main)
  25. UC, Santa Barbara
  26. Istanbul U.
  27. Beijing, Inst. High Energy Phys.
  28. Baylor U.
  29. Taiwan, Natl. Central U.
  30. IISER, Bhopal
  31. Minnesota U.
  32. Split Tech. U.
  33. TIFR, Mumbai, DHEP
  34. Boston U.
  35. Cukurova U.
  36. Malaya U.
  37. Fudan U., Shanghai
  38. Notre Dame U.
  39. Brown U.
  40. Kansas State U.
  41. Tsinghua U., Beijing
  42. Hangzhou, Zhejiang U.
  43. Florida Inst. Tech.
  44. Chulalongkorn U.

As part of its HL-LHC upgrade program, the CMS collaboration is replacing its existing endcap calorimeters with a high-granularity calorimeter (CE). The new calorimeter is a sampling calorimeter with unprecedented transverse and longitudinal readout for both electromagnetic and hadronic compartments. Due to its compactness, intrinsic time resolution, and radiation hardness, silicon has been chosen as active material for the regions exposed to higher radiation levels. The silicon sensors are fabricated as 20 cm (8”) wide hexagonal wafers and are segmented into several hundred pads which are read out individually. As part of the sensor qualification strategy, 8” sensor irradiation with neutrons has been conducted at the Rhode Island Nuclear Science Center (RINSC) and followed by their electrical characterisation in 2020-21. The completion of this important milestone in the CE's R&D program is documented in this paper and it provides detailed account of the associated infrastructure and procedures.The results on the electrical properties of the irradiated CE silicon sensors are presented.

Research Organization:
Baylor U.; Beijing, Inst. High Energy Phys.; Bogazici U.; Boston U.; Brown U.; CERN; Calcutta, VECC; Carnegie Mellon U.; Chulalongkorn U.; Cukurova U.; DESY; Ec. Polytech., OMEGA; Ecole Polytechnique; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Florida Inst. Tech.; Florida State U., Tallahassee (main); Florida State Univ., Tallahassee, FL (United States); Fudan U., Shanghai; GTU, Tbilisi; Hamburg U.; Hangzhou, Zhejiang U.; IISER, Bhopal; IISER, Pune; IRFU, Saclay; Imperial Coll., London; Indian Inst. Tech., Madras; Iowa U.; Istanbul U.; Kansas State U.; Malaya U.; Maryland U.; Minnesota U.; Natl. Tech. U., Athens; Northwestern U.; Notre Dame U.; Rochester U.; Split Tech. U.; TIFR, Mumbai, DHEP; Taiwan, Natl. Central U.; Texas Tech.; Tsinghua U., Beijing; UC, Santa Barbara; University of Rochester, NY (United States); Unlisted; Vienna, OAW; Wisconsin U., Madison
Sponsoring Organization:
US Department of Energy; USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
CMS Collaboration
Grant/Contract Number:
AC02-07CH11359; SC0008475; SC0019292
OSTI ID:
2217198
Report Number(s):
FERMILAB-PUB-23-713-CMS; oai:inspirehep.net:2154750; arXiv:2209.10159
Journal Information:
JINST, Journal Name: JINST Journal Issue: 08 Vol. 18
Country of Publication:
United States
Language:
English