Journal Article/Contribution to a conference proceedings

FZJ-2016-03803

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A Permanent-Magnet Array to Maintain 3He Gas Polarization Inside a Glass Vessel for Applications in High-Energy Laser Physics

Soltner, H. (Corresponding author)FZJ* ; Büscher, M.FZJ* ; Burgmer, P. ; Engin, I.FZJ* ; Nauschütt, B. T.FZJ* ; Maier, S. ; Glückler, H. (Last author)FZJ*

2016
IEEE New York, NY

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Please use a persistent id in citations: doi:10.1109/TASC.2016.2535293

Abstract: We designed and tested an array of permanent magnets (PMA) consisting of two rings with a Halbach-type magnetization pattern, which are stacked at an optimum distance such that its field homogeneity is sufficiently high to maintain the nuclear polarization of 3He gas for future laser experiments. The design included the magnetic layout, the selection of appropriate magnets, and the calculation of the expected relaxation time for the polarized gas. After assembly, we measured the magnetic field in the center region of the PMA. We transferred polarized gas samples from the magnetized transport box into the PMA and determined the relaxation time with four magnetic field sensors in a gradiometric arrangement, detecting the decay of the stray field of the polarized gas on the order of 100 nT in a background field of 1.3 mT. The extracted polarization lifetime of about 21 h is sufficient for the planned experiments at high-power laser facilities.

Note: JuSPARC

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Contributing Institute(s):

1. Zentralinstitut für Technologie (ZEA-1)
2. Elektronische Eigenschaften (PGI-6)
3. Kernphysikalische Großgeräte (IKP-4)

Research Program(s):

1. 522 - Controlling Spin-Based Phenomena (POF3-522) (POF3-522)

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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