Phase II upgrade of the Gerda experiment for the search of neutrinoless double beta decay

被引：2
|
作者：
Majorovits, B. [1 ]
机构：
[1] Max Planck Inst Phys & Astrophys, Fohringer Ring 6, D-80805 Munich, Germany
来源：
13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 | 2015年 / 61卷
关键词：
0 nu beta beta decay; neutrino mass; Lepton number violation; Majorana neutrino;
D O I：
10.1016/j.phpro.2014.12.041
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Observation of neutrinoless double beta decay could answer the question regarding the Majorana or Dirac nature of neutrinos. The Gerda experiment utilizes HPGe detectors enriched with the isotope Ge-76 to search for this process. Recently the Gerda collaboration has unblinded data of Phase I of the experiment. In order to further improve the sensitivity of the experiment, additionally to the coaxial detectors used, 30 BEGe detectors made from germanium enriched in Ge-76 will be deployed in GERDA Phase II. BEGe detectors have superior PSD capability, thus the background can be further reduced. The liquid argon surrounding the detector array will be instrumented in order to reject background by detecting scintillation light induced in the liquid argon by radiation. After a short introduction the hardware preparations for GERDA Phase II as well as the processing and characterization of the 30 BEGe detectors are discussed. (C) 2015 The Authors. Published by Elsevier B.V.
引用
收藏
页码：254 / 259
页数：6
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