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

作者：Krimmer J^*; Bartolome P Aguar; Ahrens J; Altieri S; Arends H J; Heil W; Karpuk S; Otten E W; Pedroni P; Salhi Z; Thomas A

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2011, 648(1): 35-40.

DOI：10.1016/j.nima.2011.05.051

• Polarized target
• He-3
• MEOP

A polarized He-3 target has been installed for the first time inside the 4 pi 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 Delta(1232) baryon resonance region.

• 出版日期2011-8-21