The design, fabrication, operation, and performance of a He-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). 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%. (C) 2016 Elsevier B.V. All rights reserved.

Lowry, M., Bass, C., D'Angelo, A., Deur, A., Dezern, G., Hanretty, C., et al. (2016). A cryostat to hold frozen-spin polarized HD targets in CLAS: HDice-II. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 815, 31-41 [10.1016/j.nima.2015.12.063].

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

D'ANGELO, ANNALISA;
2016

Abstract

The design, fabrication, operation, and performance of a He-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). 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%. (C) 2016 Elsevier B.V. All rights reserved.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - Fisica Nucleare e Subnucleare
English
Con Impact Factor ISI
Dilution refrigerator; Polarized target; Hydrogen deuteride; Frozen-spin target
http://ac.els-cdn.com/S0168900216000024/1-s2.0-S0168900216000024-main.pdf?_tid=53dd47d6-0045-11e7-852c-00000aab0f02&acdnat=1488568521_24974b150f95399919806066d50005f6
Lowry, M., Bass, C., D'Angelo, A., Deur, A., Dezern, G., Hanretty, C., et al. (2016). A cryostat to hold frozen-spin polarized HD targets in CLAS: HDice-II. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 815, 31-41 [10.1016/j.nima.2015.12.063].
Lowry, M; Bass, C; D'Angelo, A; Deur, A; Dezern, G; Hanretty, C; Ho, D; Kageya, T; Kashy, D; Khandaker, M; Laine, V; Oconnell, T; Pastor, O; Peng, P; Sandorfi, A; Sokhan, D; Wei, X; Zarecky, M
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/173667
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