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Testing the Ge detectors for the MAJORANA DEMONSTRATOR

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arxiv 1404.7399 v1 pith:7HTMGWZU submitted 2014-04-29 physics.ins-det nucl-ex

Testing the Ge detectors for the MAJORANA DEMONSTRATOR

classification physics.ins-det nucl-ex
keywords crystalshpgepropertieswillcrystaldemonstratordetectorlayer
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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High purity germanium (HPGe) crystals will be used for the MAJORANA DEMONSTRATOR, where they serve as both the source and the detector for neutrinoless double beta decay. It is crucial for the experiment to understand the performance of the HPGe crystals. A variety of crystal properties are being investigated, including basic properties such as energy resolution, efficiency, uniformity, capacitance, leakage current and crystal axis orientation, as well as more sophisticated properties, e.g. pulse shapes and dead layer and transition layer distributions. In this paper, we will present our measurements that characterize the HPGe crystals. We will also discuss our simulation package for the detector characterization setup, and show that additional information can be extracted from data-simulation comparisons.

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