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Title: Charge collection study with the ATLAS ITk prototype silicon strip sensors ATLAS17LS

Abstract

The inner tracker of the ATLAS detector is scheduled to be replaced by a completely new silicon-based inner tracker (ITk) for the Phase-II of the CERN LHC (HL-LHC). The silicon strip detector covers the volume 40 < R < 100 cm in the radial and | z | < 300 cm in the longitudinal directions. The silicon sensors for the detector will be fabricated using the n + -on-p 6-inch wafer technology, for a total of 22,000 wafers. Here, intensive studies were carried out on the final prototype sensors ATLAS17LS fabricated by Hamamatsu Photonics (HPK). The charge collection properties were examined using penetrating 90Sr β -rays and the ALIBAVA fast readout system for the miniature sensors of 1 cm × 1 cm in area. The samples were irradiated by protons in the 27 MeV Birmingham Cyclotron, the 70 MeV CYRIC at Tohoku University, and the 24 GeV CERN-PS, and by neutrons at Ljubljana TRIGA reactor for fluence values up to 2 × 1015 n eq /cm 2 . The change in the charge collection with fluence was found to be similar to the previous prototype ATLAS12, and acceptable for the ITk. Sensors with two active thicknesses, 300 μ m (standard) and 240 μ m (thin), were compared and the difference in the charge collection was observed to be small for bias voltages up to 500 V. Some samples were also irradiated with gamma radiation up to 2 MGy, and the full depletion voltage was found to decrease with the dose. This was caused by the Compton electrons due to the 60Co gamma radiation. To summarize, the design of the ATLAS17LS and technology for its fabrication have been verified for implementation in the ITk. We are in the stage of sensor pre-production with the first sensors already delivered in January of 2020.

Authors:
 [1];  [2];  [3];  [3];  [2];  [2];  [4];  [2];  [2];  [5];  [6];  [3];  [5];  [3];  [6];  [1];  [6];  [3];  [2];  [3] more »;  [7];  [5];  [8];  [4];  [6];  [7];  [5];  [9];  [2];  [1];  [2];  [3];  [1];  [1];  [3];  [5];  [2];  [6];  [9];  [1];  [3];  [7] « less
+ Show Author Affiliations
  1. Univ. of Tsukuba (Japan)
  2. Univ. of Toronto, ON (Canada)
  3. Univ. of Birmingham (United Kingdom)
  4. Jozef Stefan Inst. (IJS), Ljubljana (Slovenia)
  5. Consejo Superior de Investigaciones Cientificas (CSIC), Valencia (Spain)
  6. Univ. of California, Santa Cruz, CA (United States)
  7. Academy of Sciences of the Czech Republic, Prague (Czech Republic)
  8. Academy of Sciences of the Czech Republic, Prague (Czech Republic); Charles Univ., Prague (Czech Republic)
  9. National Lab. for High Energy Physics (KEK), Tsukuba (Japan)
Publication Date:
Research Org.:
Univ. of California, Santa Cruz, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Japan Society for the Promotion of Science (JSPS); Ministry of Education, Youth and Sports of the Czech Republic; Charles University Grant Agency (GA UK); Natural Sciences and Engineering Research Council of Canada (NSERC)
OSTI Identifier:
1851309
Alternate Identifier(s):
OSTI ID: 1809333
Grant/Contract Number:  
SC0010107; 16H06491A; LM2015058; GAUK942119; SAPP-J-2018-00
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 983; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; instruments & instrumentation; nuclear science & technology; physics; ATLAS ITk; microstrip sensor; charge collection; radiation damage

Citation Formats

Hara, K., Abidi, S. H., Affolder, A. A., Allport, P., Basso, M. J., Casha, A., Cindro, V., Ciungu, B. M., Dette, K., Escobar, C., Fadeyev, V., Freeman, P., Garcia, C., Gonella, L., Gunnell, J., Harada, D., Helling, C., Hunter, A., Kisliuk, D., Kopsalis, I., Kroll, J., Lacasta, C., Latonova, V., Mandić, I., Martinez-Mckinney, F., Mikestikova, M., Miñano, M., Nakamura, K., Nicolini, J., Onaru, K., Orr, R. S., Pyatt, S., Saito, K., Sato, K., Simpson-Allsop, C., Soldevila, U., Teuscher, R., Thomas, J., Unno, Y., Wada, S., Worm, S., and Zatocilova, I. Charge collection study with the ATLAS ITk prototype silicon strip sensors ATLAS17LS. United States: N. p., 2020. Web. doi:10.1016/j.nima.2020.164422.
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Hara, K., Abidi, S. H., Affolder, A. A., Allport, P., Basso, M. J., Casha, A., Cindro, V., Ciungu, B. M., Dette, K., Escobar, C., Fadeyev, V., Freeman, P., Garcia, C., Gonella, L., Gunnell, J., Harada, D., Helling, C., Hunter, A., Kisliuk, D., Kopsalis, I., Kroll, J., Lacasta, C., Latonova, V., Mandić, I., Martinez-Mckinney, F., Mikestikova, M., Miñano, M., Nakamura, K., Nicolini, J., Onaru, K., Orr, R. S., Pyatt, S., Saito, K., Sato, K., Simpson-Allsop, C., Soldevila, U., Teuscher, R., Thomas, J., Unno, Y., Wada, S., Worm, S., & Zatocilova, I. Charge collection study with the ATLAS ITk prototype silicon strip sensors ATLAS17LS. United States. https://doi.org/10.1016/j.nima.2020.164422
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Hara, K., Abidi, S. H., Affolder, A. A., Allport, P., Basso, M. J., Casha, A., Cindro, V., Ciungu, B. M., Dette, K., Escobar, C., Fadeyev, V., Freeman, P., Garcia, C., Gonella, L., Gunnell, J., Harada, D., Helling, C., Hunter, A., Kisliuk, D., Kopsalis, I., Kroll, J., Lacasta, C., Latonova, V., Mandić, I., Martinez-Mckinney, F., Mikestikova, M., Miñano, M., Nakamura, K., Nicolini, J., Onaru, K., Orr, R. S., Pyatt, S., Saito, K., Sato, K., Simpson-Allsop, C., Soldevila, U., Teuscher, R., Thomas, J., Unno, Y., Wada, S., Worm, S., and Zatocilova, I. Thu . "Charge collection study with the ATLAS ITk prototype silicon strip sensors ATLAS17LS". United States. https://doi.org/10.1016/j.nima.2020.164422. https://www.osti.gov/servlets/purl/1851309.
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@article{osti_1851309,
title = {Charge collection study with the ATLAS ITk prototype silicon strip sensors ATLAS17LS},
author = {Hara, K. and Abidi, S. H. and Affolder, A. A. and Allport, P. and Basso, M. J. and Casha, A. and Cindro, V. and Ciungu, B. M. and Dette, K. and Escobar, C. and Fadeyev, V. and Freeman, P. and Garcia, C. and Gonella, L. and Gunnell, J. and Harada, D. and Helling, C. and Hunter, A. and Kisliuk, D. and Kopsalis, I. and Kroll, J. and Lacasta, C. and Latonova, V. and Mandić, I. and Martinez-Mckinney, F. and Mikestikova, M. and Miñano, M. and Nakamura, K. and Nicolini, J. and Onaru, K. and Orr, R. S. and Pyatt, S. and Saito, K. and Sato, K. and Simpson-Allsop, C. and Soldevila, U. and Teuscher, R. and Thomas, J. and Unno, Y. and Wada, S. and Worm, S. and Zatocilova, I.},
abstractNote = {The inner tracker of the ATLAS detector is scheduled to be replaced by a completely new silicon-based inner tracker (ITk) for the Phase-II of the CERN LHC (HL-LHC). The silicon strip detector covers the volume 40<R<100 cm in the radial and |z|<300 cm in the longitudinal directions. The silicon sensors for the detector will be fabricated using the n+-on-p 6-inch wafer technology, for a total of 22,000 wafers. Here, intensive studies were carried out on the final prototype sensors ATLAS17LS fabricated by Hamamatsu Photonics (HPK). The charge collection properties were examined using penetrating 90Sr β-rays and the ALIBAVA fast readout system for the miniature sensors of 1 cm ×1 cm in area. The samples were irradiated by protons in the 27 MeV Birmingham Cyclotron, the 70 MeV CYRIC at Tohoku University, and the 24 GeV CERN-PS, and by neutrons at Ljubljana TRIGA reactor for fluence values up to 2 × 1015 neq/cm2. The change in the charge collection with fluence was found to be similar to the previous prototype ATLAS12, and acceptable for the ITk. Sensors with two active thicknesses, 300μm (standard) and 240μm (thin), were compared and the difference in the charge collection was observed to be small for bias voltages up to 500 V. Some samples were also irradiated with gamma radiation up to 2 MGy, and the full depletion voltage was found to decrease with the dose. This was caused by the Compton electrons due to the 60Co gamma radiation. To summarize, the design of the ATLAS17LS and technology for its fabrication have been verified for implementation in the ITk. We are in the stage of sensor pre-production with the first sensors already delivered in January of 2020.},
doi = {10.1016/j.nima.2020.164422},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 983,
place = {United States},
year = {Thu Sep 03 00:00:00 EDT 2020},
month = {Thu Sep 03 00:00:00 EDT 2020}
}
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