1. The Performance Of The Scrit Detectors For Electron-RI Scattering Experiment
- Author
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Shinnosuke Sasamura, K. Yamada, Masamitsu Watanabe, Keita Kasama, Kyo Tsukada, S. Ichikawa, Nobuaki Uchida, A. Enokizono, Mitsuki Hori, Tadaaki Tamae, Mamoru Togasaki, K. Namba, Shou Wang, Tatsuya Ohnishi, Masahiro Hara, Kousuke Adachi, Takahiro Fujita, Toshitada Hori, Kazuyoshi Kurita, Masanori Wakasugi, and Toshimi Suda
- Subjects
Physics ,Nuclear physics ,Angular momentum ,Photon ,Luminosity (scattering theory) ,Scattering ,Bremsstrahlung ,Electron ,Photon energy ,Electron scattering - Abstract
The SCRIT (Self-Confining RI Ion Target) facility has been constructed at RIKEN to make the electron-RI scattering experiment possible for the first time in the world. At SCRIT, the angular momentum distribution of scattered electrons is measured by WiSES (Window-frame Spectrometer for Electron Scattering) which consists of a dipole magnet and front/rear drift chambers, covering a solid angle of $\sim$80 mSr with an intrinsic momentum resolution of $\Delta p/p\sim10^{-3}$. Also the luminosity of the electron-RI scattering is estimated from bremsstrahlung photons measured by LMon (Luminosity Monitor) to obtain the absolute cross-section of the scattering. The LMon consists of a CsI calorimeter to measure the photon energy, and plastic fiber scintillators to measure the 2D hit distribution of the bremsstrahlung photons. In 2015-2016 the first physics experiment has been performed using $^{132}\rm Xe$ target, then the luminosity and angular distributions were successfully measured at the electron beam energy of 150-300 MeV, achieving a luminosity above $10^{27}cm^{-2}$s$^{-1}$. In this article, we present the performances of the WiSES and LMon detectors obtained by using the $^{132}\rm Xe$ experiment data.
- Published
- 2017