Speaker
Description
An electron test beam facility at KEK Tsukuba campus with beam momentum up to 5.8 GeV has been established since 2022. The beam is extracted from PF-AR electron storage ring, and it is available for sensor testing for three periods (May-June, Oct-Dec and Feb-Mar) in each year in total about 5.5 months including period of the beam shutdown at CERN starting middle of 2026. In 2025, we have modified the beam transfer magnet configuration. As the result, the rate of electron beam has been improved by a factor of 1.5.
Also we are investigating a hadron test beam line at KEK Tokai campus (J-PARC). A test measurement has been performed to measure amount of charged particles. We are planning to extend this effort to measure momentum distribution by introducing a dipole magnet.
In this report, we will report these status and plans related to the test beam line at KEK.