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Journal articles
A cryostat to hold frozen-spin polarized HD targets in CLAS: HDice-II
M.M. Lowry
C.D. Bass
A. D׳angelo
A. Deur
G. Dezern
C. Hanretty
D. Ho
T. Kageya
D. Kashy
M. Khandaker
Vivien Laine
1
T. O׳connell
O. Pastor
P. Peng
A.M. Sandorfi
D. Sokhan
2
X. Wei
M. Zarecky
X. Wei
Author
M. Zarecky
Author
1
UBP - Université Blaise Pascal - Clermont-Ferrand 2 (34, avenue Carnot - BP 185 / 63006 Clermont-Ferrand cedex - France)
2
IPNO - Institut de Physique Nucléaire d'Orsay (IPN - 15, rue Georges Clemenceau - 91406 ORSAY CEDEX - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8608 (France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
Abstract : The design, fabrication, operation, and performance of a 3/4He 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). The device proves capable of maintaining a base temperature of 50 mK and a holding field of 1 T for extended periods. These characteristics enabled multi-month polarization lifetimes for frozen spin HD targets having proton polarization of up to 50% and deuteron up to 27%.
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http://hal.in2p3.fr/in2p3-01298700
Contributor : Sophie Heurteau <>
Submitted on : Wednesday, April 6, 2016 - 2:50:27 PM
Last modification on : Friday, April 30, 2021 - 10:21:51 AM
Contributor : Sophie Heurteau <>
Submitted on : Wednesday, April 6, 2016 - 2:50:27 PM
Last modification on : Friday, April 30, 2021 - 10:21:51 AM
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- HAL Id : in2p3-01298700, version 1
- DOI : 10.1016/j.nima.2015.12.063
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IN2P3 | IPNO | CNRS | PRES_CLERMONT | GS-CHIMIE
Citation
M.M. Lowry, C.D. Bass, A. D׳angelo, A. Deur, G. Dezern, et al.. A cryostat to hold frozen-spin polarized HD targets in CLAS: HDice-II. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2016, 815, pp.31-41. ⟨10.1016/j.nima.2015.12.063⟩. ⟨in2p3-01298700⟩
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