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@MASTERSTHESIS{Riemer:471495,
author = {Riemer, Felix},
othercontributors = {Heiko, Lacker and Worm, Steven},
title = {{R}everse current, capacitance and thermal runaway of
irradiated silicon diodes},
school = {Humboldt-Universität zu Berlin},
type = {Masterarbeit},
reportid = {PUBDB-2021-04447},
pages = {87},
year = {2021},
note = {Masterarbeit, Humboldt-Universität zu Berlin, 2021},
abstract = {Silicon sensors are widely used in HEP experiments for
particle tracking and calorimetry. One of the problems of
silicon detectors is the increase of leakage current due to
radiation damage. Leakage currents generate considerable
heat for large detectors. At the same time, the leakage
current increases with increasing sensor
temperature.Therefore, catastrophic thermal runaway can
occur with accumulated radiation damage during service in
case of insufficient cooling performance.In order to
estimate the effects, capacitance and current of irradiated
silicon diodes have been measured as a function of particle
fluence, temperature, bias voltage, cooling power and for
diodes with different electrode sizes.The diodes were
irradiated with 70 MeV/c protons and 1 MeV/c neutrons to
equivalent fluences between $10^{13}$ $\text{cm}^{−2}$ and
$5\cdot 10^{16}$ $\text{cm}^{−2}$. A parametrization to
describe the reverse current of highly irradiated silicon
sensors and an analytical model for thermal runaway were
used to estimate the critical parameters. A setup was built
to confront the model with measurements within its validity
range. Runaway was achieved and the existing analytical
model was tuned by using experimental data.The results can
be applied to estimate the change of the heating power of
silicon sensors in harsh radiation environments and the
cooling infrastructure which is necessary to prevent thermal
runaway in future ATLAS operation and other future
detectors.},
cin = {$Z_ATUP$ / $Z_DET$ / HUB},
cid = {$I:(DE-H253)Z_ATUP-20210408$ / $I:(DE-H253)Z_DET-20201126$
/ I:(DE-H253)HUB-20140108},
pnm = {622 - Detector Technologies and Systems (POF4-622)},
pid = {G:(DE-HGF)POF4-622},
experiment = {EXP:(DE-H253)LHC-Exp-ATLAS-20150101},
typ = {PUB:(DE-HGF)19},
url = {https://bib-pubdb1.desy.de/record/471495},
}