Table of Contents Author Guidelines Submit a Manuscript
Advances in High Energy Physics
Volume 2015, Article ID 817530, 7 pages
http://dx.doi.org/10.1155/2015/817530
Research Article

A CaMoO4 Crystal Low Temperature Detector for the AMoRE Neutrinoless Double Beta Decay Search

1Institute for Basic Science, Daejeon 305-811, Republic of Korea
2Department of Physics and Astronomy, Seoul National University, Seoul 151-747, Republic of Korea
3Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea
4Institute for Nuclear Research, 03680 Kyiv, Ukraine
5Kirchhoff-Institut für Physik, Universität Heidelberg, 69120 Heidelberg, Germany
6Physics Department, Kyungpook National University, Daegu 702-701, Republic of Korea
7Department of Physics, Sejong University, Seoul 143-747, Republic of Korea
8Korea University of Science and Technology, Daejeon 305-350, Republic of Korea
9Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia
10NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA

Received 4 July 2014; Accepted 30 August 2014

Academic Editor: Hiro Ejiri

Copyright © 2015 G. B. Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.

Abstract

We report the development of a CaMoO4 crystal low temperature detector for the AMoRE neutrinoless double beta decay search experiment. The prototype detector cell was composed of a 216 g CaMoO4 crystal and a metallic magnetic calorimeter. An overground measurement demonstrated FWHM resolution of 6–11 keV for full absorption gamma peaks. Pulse shape discrimination was clearly demonstrated in the phonon signals, and 7.6  of discrimination power was found for the and separation. The phonon signals showed rise-times of about 1 ms. It is expected that the relatively fast rise-time will increase the rejection efficiency of two-neutrino double beta decay pile-up events which can be one of the major background sources in searches.