A polarized 3He target for the photon beam at MAMI

J. Krimmer; P. Aguar Bartolomé; J. Ahrens; S. Altieri; H. J. Arends; W. Heil; S. Karpuk; E. W. Otten; P. Pedroni; Z. Salhi; A. Thomas

doi:10.1016/j.nima.2011.05.051

A polarized ³He target for the photon beam at MAMI

J. Krimmer, P. Aguar Bartolomé, J. Ahrens, S. Altieri, H. J. Arends, W. Heil, S. Karpuk, E. W. Otten, P. Pedroni, Z. Salhi, A. Thomas

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

A polarized ³He target has been installed for the first time inside the 4π Crystal Ball detector at the tagged photon beam of the MAinz MIcrotron (MAMI). It has been demonstrated that the system works reliably and that the polarization losses during handling of the polarized gas are under control. Initial polarization values up to 70% and total relaxation times up to 20 h could be obtained during a first test beam time devoted to the measurement of the double polarized photoabsorption cross-section in the Δ(1232) baryon resonance region.

Original language	English
Pages (from-to)	35-40
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	648
Issue number	1
DOIs	https://doi.org/10.1016/j.nima.2011.05.051
Publication status	Published - Aug 21 2011
Externally published	Yes

Keywords

MEOP
Polarized target

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

Access to Document

10.1016/j.nima.2011.05.051

Cite this

Krimmer, J., Aguar Bartolomé, P., Ahrens, J., Altieri, S., Arends, H. J., Heil, W., Karpuk, S., Otten, E. W., Pedroni, P., Salhi, Z., & Thomas, A. (2011). A polarized ³He target for the photon beam at MAMI. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 648(1), 35-40. https://doi.org/10.1016/j.nima.2011.05.051

Krimmer, J, Aguar Bartolomé, P, Ahrens, J, Altieri, S, Arends, HJ, Heil, W, Karpuk, S, Otten, EW, Pedroni, P, Salhi, Z & Thomas, A 2011, 'A polarized ³He target for the photon beam at MAMI', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 648, no. 1, pp. 35-40. https://doi.org/10.1016/j.nima.2011.05.051

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title = "A polarized 3He target for the photon beam at MAMI",

abstract = "A polarized 3He target has been installed for the first time inside the 4π Crystal Ball detector at the tagged photon beam of the MAinz MIcrotron (MAMI). It has been demonstrated that the system works reliably and that the polarization losses during handling of the polarized gas are under control. Initial polarization values up to 70% and total relaxation times up to 20 h could be obtained during a first test beam time devoted to the measurement of the double polarized photoabsorption cross-section in the Δ(1232) baryon resonance region.",

keywords = "MEOP, Polarized target",

author = "J. Krimmer and {Aguar Bartolom{\'e}}, P. and J. Ahrens and S. Altieri and Arends, {H. J.} and W. Heil and S. Karpuk and Otten, {E. W.} and P. Pedroni and Z. Salhi and A. Thomas",

note = "Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft under contract SFB 443. The authors want to thank W. Stampp for running the 3 He-polarizer at perfect performance and the staff of the mechanical workshops from the Institut f{\"u}r Kernphysik and the Institut f{\"u}r Physik in Mainz for their support. ",

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T1 - A polarized 3He target for the photon beam at MAMI

AU - Krimmer, J.

AU - Aguar Bartolomé, P.

AU - Ahrens, J.

AU - Altieri, S.

AU - Arends, H. J.

AU - Heil, W.

AU - Karpuk, S.

AU - Otten, E. W.

AU - Pedroni, P.

AU - Salhi, Z.

AU - Thomas, A.

N1 - Funding Information: This work was supported by the Deutsche Forschungsgemeinschaft under contract SFB 443. The authors want to thank W. Stampp for running the 3 He-polarizer at perfect performance and the staff of the mechanical workshops from the Institut für Kernphysik and the Institut für Physik in Mainz for their support.

PY - 2011/8/21

Y1 - 2011/8/21

N2 - A polarized 3He target has been installed for the first time inside the 4π Crystal Ball detector at the tagged photon beam of the MAinz MIcrotron (MAMI). It has been demonstrated that the system works reliably and that the polarization losses during handling of the polarized gas are under control. Initial polarization values up to 70% and total relaxation times up to 20 h could be obtained during a first test beam time devoted to the measurement of the double polarized photoabsorption cross-section in the Δ(1232) baryon resonance region.

AB - A polarized 3He target has been installed for the first time inside the 4π Crystal Ball detector at the tagged photon beam of the MAinz MIcrotron (MAMI). It has been demonstrated that the system works reliably and that the polarization losses during handling of the polarized gas are under control. Initial polarization values up to 70% and total relaxation times up to 20 h could be obtained during a first test beam time devoted to the measurement of the double polarized photoabsorption cross-section in the Δ(1232) baryon resonance region.

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