LMU Seminars

Progress of beam-transport simulations of S-line at J-PARC

by Ms Phanthip Jaikaew (RIKEN/Chaing Mai University)

Europe/Zurich
SZ-WBGB/019

SZ-WBGB/019

Description

The Materials and Life Science Facility (MLF) at J-PARC can provide both neutrons and muons. The surface-muon beamline (S-line) is designed to accommodate four experimental areas (S1-S4). In 2017, the surface-muon flux reached 8.5 × 104 per second during 150 kW operation at the end of S1, with a tailored beam spot size of ø20 mm. Currently, two beamlines, S1 and S2, are operational. Our group intends to introduce a new muon beamline, S3, in the space between S1 and S2, in collaboration with the KEK muon group. To maximize muon-transport efficiency to the new beamline, we are now re-simulating the beam transport from the muon-production target using Monte Carlo simulation programs, specifically G4beamline. The results showed a ~95% proton transmission through the muon target. At the S-line entrance, the surface muon yield is 1.43 × 10−7. The transverse positional distribution and phase space of the surface muon beam were used for beam dynamic calculations and will be provided in this presentation.

Organized by

Zaher Salman

Zaher Salman