Monitoring radiation damage in the LHCb Tracker Turicensis

• Main Authors: Beteta, C. Abellan, Atzeni, M, Battista, V, Bursche, A, Dey, B, Suarez, A. Dosil, Elsasser, C, Prieto, A. Fernandez, Fu, J, Graverini, E, Komarov, I, Cid, E. Lemos, Lionetto, F, Mauri, A, Merli, A, Pais, P. R, Trigo, E. Perez, Regales, M. del Pilar Peco, Stefko, P, Steinkamp, O, Storaci, B, Tobin, M, Weiden, A
• Format: Journal Article
• Language: English
• Published: 26-08-2020
• Subjects: Physics - High Energy Physics - Experiment; Physics - Instrumentation and Detectors
• DOI: 10.48550/arxiv.1809.05063

JINST 15 (2020), P08016 This paper presents the techniques used to monitor radiation damage in the
LHCb Tracker Turicensis during the LHC Runs 1 and 2. Bulk leakage currents in
the silicon sensors were monitored continuously, while the full depletion
voltages of the sensors were estimated at regular intervals by performing
dedicated scans of the charge collection efficiency as a function of the
applied bias voltage. Predictions of the expected leakage currents and full
depletion voltages are extracted from the simulated radiation profile, the
luminosity delivered by the LHC, and the thermal history of the silicon
sensors. Good agreement between measurements and predictions is found.