Arnaud, Q., Armengaud, E., Augier, C. et al. (46 more authors) (2016) Signals induced by charge-trapping in EDELWEISS FID detectors: Analytical modeling and applications. Journal of Instrumentation, 11 (10).
Abstract
The EDELWEISS-III direct dark matter search experiment uses cryogenic HP-Ge detectors Fully covered with Inter-Digitized electrodes (FID). They are operated at low fields (< 1 V/cm), and as a consequence charge-carrier trapping significantly affects both the ionization and heat energy measurements. This paper describes an analytical model of the signals induced by trapped charges in FID detectors based on the Shockley-Ramo theorem. It is used to demonstrate that veto electrodes, initially designed for the sole purpose of surface event rejection, can be used to provide a sensitivity to the depth of the energy deposits, characterize the trapping in the crystals, perform heat and ionization energy corrections and improve the ionization baseline resolutions. These procedures are applied successfully to actual data.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 IOP Publishing. This is an author produced version of a paper subsequently published in Journal of Instrumentation. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | FID; induced signals; Shockley-Ramo; charge-carrier trapping; analytical model; dark matter detectors |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Funding Information: | Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL ST/K006444/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 07 Nov 2016 16:29 |
Last Modified: | 11 Oct 2017 01:59 |
Published Version: | http://doi.org/10.1088/1748-0221/11/10/P10008 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/1748-0221/11/10/P10008 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:106849 |