| Autor: |
Hidetomo Oguri, Masanori Ikegami, Yong Liu, Alexander N. Mirzojan, Nobuo Ouchi, Alexander V. Feschenko, Kazuo Hasegawa, T. Maruta, Akihiko Miura, Tomoaki Miyao |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Proceedings of the 2nd International Symposium on Science at J-PARC — Unlocking the Mysteries of Life, Matter and the Universe —. |
| DOI: |
10.7566/jpscp.8.011003 |
| Popis: |
In the Japan Proton Accelerator Research Complex linac, an energy upgrade project was started in 2009 using annular-ring coupled structure (ACS) linac cavities. We decided to use bunch shape monitors (BSM) for monitoring longitudinal beam width measurement to achieve longitudinal matching using two bunchers located upstream of the ACS cavities, where the radio frequency jumps from 324 to 972 MHz. Three BSMs were fabricated and installed in the original beam line. The BSMs were commissioned with the beam and their operability was demonstrated. In this study, we introduce the mechanism of the BSMs, its operability, measurement results with the 181 MeV beam, and consistency check with the respective cavity amplitude. Furthermore, we describe the operational vacuum conditions and outline the improvements to the BSMs' vacuum system. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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