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The HERMES polarized 3He internal gas target

Publication ,  Journal Article
DeSchepper, D; Kramer, LH; Pate, SF; Ackerstaff, K; Carr, RW; Court, GR; Dvoredsky, A; Gao, H; Golendoukhin, A; Hansen, JO; Holler, Y; Lee, K ...
Published in: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
December 11, 1998

The HERMES experiment is investigating the spin structure of the proton and neutron via deep-inelastic scattering of polarized positrons from polarized nuclear targets. The polarized positrons are provided by the HERA positron storage ring at DESY, Hamburg, Germany. The targets are pure internal gas targets. Data acquisition began in 1995, utilizing a polarized 3He internal gas target to study the spin structure of the neutron. The target gas was polarized using the metastability-exchange optical-pumping technique and then injected into a cryogenically cooled target cell. The target was designed to operate with either longitudinal or transverse directions of polarization. Operating conditions included polarizations of up to 54% and target thicknesses of 1 × 1015 nucleons/cm2. In this paper the HERMES polarized 3He internal gas target is described in detail. © 1998 Published by Elsevier Science B.V. All rights reserved.

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Published In

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

DOI

ISSN

0168-9002

Publication Date

December 11, 1998

Volume

419

Issue

1

Start / End Page

16 / 44

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
 

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DeSchepper, D., Kramer, L. H., Pate, S. F., Ackerstaff, K., Carr, R. W., Court, G. R., … Zapfe-Düren, K. (1998). The HERMES polarized 3He internal gas target. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 419(1), 16–44. https://doi.org/10.1016/S0168-9002(98)00901-2
DeSchepper, D., L. H. Kramer, S. F. Pate, K. Ackerstaff, R. W. Carr, G. R. Court, A. Dvoredsky, et al. “The HERMES polarized 3He internal gas target.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 419, no. 1 (December 11, 1998): 16–44. https://doi.org/10.1016/S0168-9002(98)00901-2.
DeSchepper D, Kramer LH, Pate SF, Ackerstaff K, Carr RW, Court GR, et al. The HERMES polarized 3He internal gas target. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1998 Dec 11;419(1):16–44.
DeSchepper, D., et al. “The HERMES polarized 3He internal gas target.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 419, no. 1, Dec. 1998, pp. 16–44. Scopus, doi:10.1016/S0168-9002(98)00901-2.
DeSchepper D, Kramer LH, Pate SF, Ackerstaff K, Carr RW, Court GR, Dvoredsky A, Gao H, Golendoukhin A, Hansen JO, Holler Y, Jones CE, Kelsey JF, Kinney E, Korsch W, Lee K, Martin JW, McKeown RD, Milner RG, Niczyporuk M, Pitt ML, Poolman HR, Röper G, Shin T, Sowinski J, Steffens E, Stewart J, Stock F, Sutter M, Tallini H, Tipton B, VanBommel R, Wise T, Zapfe-Düren K. The HERMES polarized 3He internal gas target. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 1998 Dec 11;419(1):16–44.
Journal cover image

Published In

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

DOI

ISSN

0168-9002

Publication Date

December 11, 1998

Volume

419

Issue

1

Start / End Page

16 / 44

Related Subject Headings

  • Nuclear & Particles Physics
  • 5106 Nuclear and plasma physics
  • 0299 Other Physical Sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences