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Title: A cryostat to hold frozen-spin polarized HD targets in CLAS. HDice-II

The design, fabrication, operation, and performance of a helium-3/4 dilution refrigerator and superconducting magnet system for holding a frozen-spin polarized hydrogen deuteride target in the Jefferson Laboratory CLAS detector during photon beam running is reported. The device operates both vertically (for target loading) and horizontally (for target bombardment). Moreover, the device proves capable of maintaining a base temperature of 50 mK and a holding field of 1 Tesla for extended periods.
 [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [3] ;  [4] ;  [1] ;  [1] ;  [5] ;  [6] ;  [7] ;  [1] ;  [3] ;  [1] ;  [8] ;  [1] ;  [1]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Univ. of Rome Tor Vergata (Italy)
  3. Univ. of Virginia, Charlottesville, VA (United States)
  4. Carnegie Mellon Univ., Pittsburgh, PA (United States)
  5. Norfolk State Univ., VA (United States)
  6. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Blaise Pascal Univ. (France)
  7. Univ. of Connecticut, Storrs, CT (United States)
  8. Inst. of Nuclear Physics, Orsay (France)
Publication Date:
Report Number(s):
JLAB-PHY-15-2156; DOE/OR/23177-3583
Journal ID: ISSN 0168-9002; PII: S0168900216000024
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 815; Journal ID: ISSN 0168-9002
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
74 ATOMIC AND MOLECULAR PHYSICS; dilution refrigerator; polarized target; hydrogen deuteride; frozen-spin target
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1341758