The performance of the SCRIT detectors for electron-RI scattering experiment

A. Enokizono, K. Adachi, T. Fujita, M. Hori, K. Kurita, S. Sasamura, M. Togasaki, N. Uchida, K. Yamada, K. Kasama, K. Namba, T. Suda, T. Tamae, Kyo Tsukada, M. Hara, T. Hori, S. Ichikawa, T. Ohnishi, M. Wakasugi, M. WatanabeS. Wang

Research output: Contribution to journalConference articlepeer-review


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 ∼80 mSr with an intrinsic momentum resolution of Δp/p ∼ 10-3. 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 132Xe target, then the luminosity and angular distributions were successfully measured at the electron beam energy of 150-300 MeV, achieving a luminosity above 1027cm-2s-1. In this article, we present the performances of the WiSES and LMon detectors obtained by using the 132Xe experiment data.

Original languageEnglish
Article number092
JournalProceedings of Science
Publication statusPublished - 2016
Event26th International Nuclear Physics Conference, INPC 2016 - Adelaide, Australia
Duration: 2016 Sept 112016 Sept 16

ASJC Scopus subject areas

  • General


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