Production, characterization and operation of $^{76}$Ge enriched BEGe detectors in GERDA
Abstract
The GERmanium Detector Array (GERDA) at the Gran Sasso Underground Laboratory (LNGS) searches for the neutrinoless double beta decay (0{\nu}{\beta}{\beta}) of Ge. Germanium detectors made of material with an enriched Ge fraction act simultaneously as sources and detectors for this decay. During Phase I of the experiment mainly refurbished semi-coaxial Ge detectors from former experiments were used. For the upcoming Phase II, 30 new Ge enriched detectors of broad energy germanium (BEGe)-type were produced. A subgroup of these detectors has already been deployed in GERDA during Phase I. The present paper reviews the complete production chain of these BEGe detectors including isotopic enrichment, purification, crystal growth and diode production. The efforts in optimizing the mass yield and in minimizing the exposure of the Ge enriched germanium to cosmic radiation during processing are described. Furthermore, characterization measurements in vacuum cryostats of the first subgroup of seven BEGe detectors and their long-term behavior in liquid argon are discussed. The detector performance fulfills the requirements needed for the physics goals of GERDA Phase~II.
Keywords
Cite
@article{arxiv.1410.0853,
title = {Production, characterization and operation of $^{76}$Ge enriched BEGe detectors in GERDA},
author = {M. Agostini and M. Allardt and E. Andreotti and A. M. Bakalyarov and M. Balata and I. Barabanov and N. Barros and L. Baudis and C. Bauer and N. Becerici-Schmidt and E. Bellotti and S. Belogurov and S. T. Belyaev and G. Benato and A. Bettini and L. Bezrukov and T. Bode and D. Borowicz and V. Brudanin and R. Brugnera and D. Budjas and A. Caldwel and C. Cattadori and A. Chernogorov and V. D'Andrea and E. V. Demidova and A. Domula and V. Egorov and R. Falkenstein and K. Freund and N. Frodyma and A. Gangapshev and A. Garfagnini and C. Gotti and P. Grabmayr and V. Gurentsov and K. Gusev and W. Hampel and A. Hegai and M. Heisel and S. Hemmer and G. Heusser and W. Hofmann and M. Hult and L. V. Inzhechik and L. Ioannucci and J. Janicsko Csathy and J. Jochum and M. Junker and V. Kazalov and T. Kihm and I. V. Kirpichnikov and A. Kirsch and A. Klimenko and K. T. Knöpfle and O. Kochetov and V. N. Kornoukhov and V. V. Kuzminov and M. Laubenstein and A. Lazzaro and V. I. Lebedev and B. Lehnert and H. Y. Liao and M. Lindner and I. Lippi and A. Lubashevskiy and B. Lubsandorzhiev and G. Lutter and C. Macolino and B. Majorovits and W. Maneschg and M. Misiaszek and I. Nemchenok and S. Nisi and C. O'Shaughnessy and D. Palioselitis and L. Pandola and K. Pelczar and G. Pessina and A. Pullia and S. Riboldi and N. Rumyantseva and C. Sada and M. Salathe and C. Schmitt and J. Schreiner and O. Schulz and B. Schwingenheuer and S. Schönert and E. Shevchik and M. Shirchenko and H. Simgen and A. Smolnikov and L. Stanco and H. Strecker and C. A. Ur and L. Vanhoefer and A. A. Vasenko and K. von Sturm and V. Wagner and M. Walter and A. Wegmann and T. Wester and H. Wilsenach and M. Wojcik and E. Yanovich and P. Zavarise and I. Zhitnikov and S. V. Zhukov and D. Zinatulina and K. Zuber and G. Zuzel},
journal= {arXiv preprint arXiv:1410.0853},
year = {2015}
}
Comments
23 pages, 21 figures