NDLI: Development of large area APDs for the P̄ANDA EMC readout

Content Provider	IEEE Xplore Digital Library
Author	Wilms, A.
Copyright Year	2008
Description	Author affiliation: Gesellschaft für Schwerionenforschung GmbH, Darmstadt, Germany (Wilms, A.)
Abstract	The barrel part of the P̄ANDA electromagnetic calorimeter will consist of nearly 11.000 lead tungstate crystals, read out with two Avalanche Photodiodes per crystal based on the requirement of using a magnetic field indendent operating readout device. Due to the geometry of the rear crystal face the invisaged diodes have to be rectangularely shaped. Therefore the R&D of these photodiodes was started by the development of large area APDs (LAAPDs) with an active area of $(10×10)mm^{2}$ to fix the device properties in terms of radiation hardness, dark current behaviour, etc. Based on the measurements done with these quadratically shaped APDs, first rectangularely shaped APDs have been delivered to the EMC group in september 2008. This paper will present the APD properties of the two tested differently shaped LAAPDs which have been under investigation so far and will describe the influence of irradiation on the device properties in detail.
Starting Page	1843
Ending Page	1845
File Size	3329843
Page Count	3
File Format	PDF
ISBN	9781424427147
ISSN	10957863
DOI	10.1109/NSSMIC.2008.4774750
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-19
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electromagnetic compatibility Electromagnetic devices Electromagnetic fields Crystals Avalanche photodiodes Magnetic fields Geometry Diodes Dark current Shape measurement
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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