کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8176752 | 1526383 | 2014 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
CDF Run II silicon vertex detector annealing study
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Between Run II commissioning in early 2001 and the end of operations in September 2011, the Tevatron collider delivered 12 fbâ1 of pp¯ collisions at s=1.96TeV to the Collider Detector at Fermilab (CDF). During that time, the CDF silicon vertex detector was subject to radiation doses of up to 12 Mrad. After the end of operations, the silicon detector was annealed for 24 days at 18 °C. In this paper, we present a measurement of the change in the bias currents for a subset of sensors during the annealing period. We also introduce a novel method for monitoring the depletion voltage throughout the annealing period. The observed bias current evolution can be characterized by a falling exponential term with time constant ÏI=17.88±0.36(stat.)±0.25(syst.) days. We observe an average decrease of (27±3)% in the depletion voltage, whose evolution can similarly be described by an exponential time constant of ÏV=6.21±0.21days. These results are consistent with the Hamburg model within the measurement uncertainties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 743, 11 April 2014, Pages 68-78
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 743, 11 April 2014, Pages 68-78
نویسندگان
M. Stancari, K. Knoepfel, S. Behari, D. Christian, B. Di Ruzza, S. Jindariani, T.R. Junk, M. Mattson, A. Mitra, M.N. Mondragon, A. Sukhanov,