Title: Introduction to J-PARC Accelerators - Past, Present and Future

Time: 14:00, March 26, 2013

Place: Meeting Room on the second floor of Hall 5#

Speaker: Prof. Yoshiro Irie, KEK,Japan

Moderator: Prof. Fu Shinian

Abstract:

The J-PARC (Japan Proton Accelerator Research Complex) is a joint project between KEK and JAEA. The construction was started in 2001 at Tokai village in Ibaraki prefecture, and was completed in 2008. From the first beam commissioning of the J-PARC 3GeV RCS in October 2007, the RCS has steadily increased the output beam power. The linac energy will be upgraded from 181MeV to 400MeV during a long shutdown from August 2013 to January 2014. The beam commissioning toward 1MW output will then be started in February, 2014. In my talk, I will present many accelerator issues we have had till today and the way how we have solved or want to solve. Finally, the scenariotoward 1MW will be discussed.

About the speaker:

I was born in 1947 in Saga-city, Japan, and graduated in physics from the Kyushu University in 1970. In 1977, I received PhD in applied physics from Kyushu Univ. After I spent two years as a lecturer in Saga Women’s Junior College, I moved to the KEK in 1978, where I started working in the beam-line group of the Booster Synchrotron Utilization Facility. In 1995, I moved to the Proton Synchrotron division where I was in charge of the 500MeV Booster synchrotron (RCS). Since then till my retirement in 2011, I worked in the field of high power proton synchrotron for the spallation neutron source. My main subject is injection and extraction of the synchrotron. Also, collaboration with ISIS, UK on the low output-impedance RF system is underway since 1996.