%0 Journal Article
%T A compact ultra-clean system for deploying radioactive sources inside the KamLAND detector
%A T. I. Banks
%A S. J. Freedman
%A J. Wallig
%A N. Ybarrolaza
%A A. Gando
%A Y. Gando
%A H. Ikeda
%A K. Inoue
%A Y. Kishimoto
%A M. Koga
%A T. Mitsui
%A K. Nakamura
%A I. Shimizu
%A J. Shirai
%A A. Suzuki
%A Y. Takemoto
%A K. Tamae
%A K. Ueshima
%A H. Watanabe
%A B. D. Xu
%A H. Yoshida
%A S. Yoshida
%A A. Kozlov
%A C. Grant
%A G. Keefer
%A A. Piepke
%A T. Bloxham
%A B. K. Fujikawa
%A K. Han
%A K. Ichimura
%A H. Murayama
%A T. O'Donnell
%A H. M. Steiner
%A L. A. Winslow
%A D. A. Dwyer
%A R. D. McKeown
%A C. Zhang
%A B. E. Berger
%A C. E. Lane
%A J. Maricic
%A T. Miletic
%A M. Batygov
%A J. G. Learned
%A S. Matsuno
%A M. Sakai
%A G. A. Horton-Smith
%A K. E. Downum
%A G. Gratta
%A Y. Efremenko
%A O. Perevozchikov
%A H. J. Karwowski
%A D. M. Markoff
%A W. Tornow
%A K. M. Heeger
%A J. A. Detwiler
%A S. Enomoto
%A M. P. Decowski
%J Physics
%D 2014
%I arXiv
%R 10.1016/j.nima.2014.09.068
%X We describe a compact, ultra-clean device used to deploy radioactive sources along the vertical axis of the KamLAND liquid-scintillator neutrino detector for purposes of calibration. The device worked by paying out and reeling in precise lengths of a hanging, small-gauge wire rope (cable); an assortment of interchangeable radioactive sources could be attached to a weight at the end of the cable. All components exposed to the radiopure liquid scintillator were made of chemically compatible UHV-cleaned materials, primarily stainless steel, in order to avoid contaminating or degrading the scintillator. To prevent radon intrusion, the apparatus was enclosed in a hermetically sealed housing inside a glove box, and both volumes were regularly flushed with purified nitrogen gas. An infrared camera attached to the side of the housing permitted real-time visual monitoring of the cable's motion, and the system was controlled via a graphical user interface.
%U http://arxiv.org/abs/1407.0413v2