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Title: A compact ultra-clean system for deploying radioactive sources inside the KamLAND detector

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. Finally, 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.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [3] ;  [3] ;  [3] ;  [4] ;  [5] ;  [4] ;  [3] ;  [4] ;  [3] ;  [3] ;  [3] ;  [3] ;  [3] ;  [3] ;  [3] ;  [3] more »;  [3] ;  [6] ;  [7] ;  [8] ;  [8] ;  [9] ;  [1] ;  [2] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [10] ;  [10] ;  [10] ;  [11] ;  [12] ;  [12] ;  [12] ;  [13] ;  [13] ;  [13] ;  [13] ;  [14] ;  [15] ;  [15] ;  [7] ;  [16] ;  [17] ;  [18] ;  [19] ;  [20] ;  [21] ;  [22] ;  [23] « less
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Tokyo (Japan)
  3. Tohoku Univ., Sendai (Japan)
  4. Tohoku Univ., Sendai (Japan); Univ. of Tokyo (Japan)
  5. Univ. of Tokyo (Japan); Tohoku Univ., Sendai (Japan)
  6. Osaka Univ. (Japan)
  7. Univ. of Tokyo (Japan)
  8. Univ. of Alabama, Tuscaloosa, AL (United States)
  9. Univ. of Alabama, Tuscaloosa, AL (United States); Univ. of Tokyo (Japan)
  10. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  11. Colorado State Univ., Fort Collins, CO (United States)
  12. Drexel Univ., Philadelphia, PA (United States)
  13. Univ. of Hawaii at Manoa, Honolulu, HI (United States)
  14. Kansas State Univ., Manhattan, KS (United States); Univ. of Tokyo (Japan)
  15. Stanford Univ., CA (United States)
  16. Univ. of Tennessee, Knoxville, TN (United States)
  17. Triangle Univ. Nuclear Lab., Durham, NC (United States); Univ. of North Carolina, Chapel Hill, NC (United States)
  18. Triangle Univ. Nuclear Lab., Durham, NC (United States); North Carolina Central Univ. , Durham, NC (United States)
  19. Triangle Univ. Nuclear Lab., Durham, NC (United States); Duke Univ., Durham, NC (United States); Univ. of Tokyo (Japan)
  20. Univ. of Wisconsin, Madison, WI (United States); Univ. of Tokyo (Japan)
  21. Univ. of Washington, Seattle, WA (United States)
  22. Univ. of Tokyo (Japan); Univ. of Washington, Seattle, WA (United States)
  23. Nikhef and the University of Amsterdam, Amsterdam (Netherlands); Univ. of Tokyo (Japan)
Publication Date:
OSTI Identifier:
1136781
Report Number(s):
LBNL--6675E
Journal ID: ISSN 0168-9002
Grant/Contract Number:
DE-AC02-05CH11231; FG03-00ER41138
Type:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 769; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
Univ. of California, Berkeley, CA (United States)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS Large detector systems for particle and astroparticle physics; Detector alignment and calibration methods (lasers, Sources, Particle-beams); Scintillators, Scintillation and light emission processes (solid, Gas and liquid scintillators)