EMIS 2022 at RAON

Operational experiences of high-power production target and high-power beam dump at BigRIPS separator at RIKEN RI beam factory

3 Oct 2022, 11:40

20m

S236 (Science Culture Center, IBS)

Oral Session Session 2

Speaker

Dr Koichi Yoshida (Dr.)

Description

A water-cooled rotating target and a water cooled stational beam dump to withstand beam powers of 82 kW corresponding to the ${}^{238}$U beams with the energy of 345 MeV/nucleon and the intensity of 1 particle $\mu$A, were developed as the target and beam dump system for the BigRIPS separator at RIKEN RI Beam factory in 2007. They have been successfully operated without sever trouble with the beam powers of up to 15 kW. Operational experiences of these systems over the 15 years will be presented at the conference. Results of measurements of the beam-spot temperatures for the target and the beam dump with various beams from RIBF accelerators were compared with the thermal model calculations and validity of the design will be discussed. Radiation damage to the system equipment, although not yet relevantly observed, will also be discussed along with PHITS${}^{1)}$ simulation results.

1) T. Sato et al., J.Nucl.Sci.Technol.55, 684-690 (2018).

Presentation materials

2-2 Koichi Yoshida.pdf