| Title |
Transverse Intra-bunch Feedback in the J-PARC MR |
| Authors |
- K. Nakamura
Kyoto University, Kyoto, Japan
- Y.H. Chin, T. Obina, M. Okada, M. Tobiyama
KEK, Ibaraki, Japan
- T. Koseki, T. Toyama
J-PARC, KEK & JAEA, Ibaraki-ken, Japan
- Y. Shobuda
JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
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| Abstract |
We will report the development of a new broadband (bandwidth of around 100MHz) feedback system for suppression of intra-bunch oscillations and reduction of particle losses at the J-PARC Main Ring (MR). A new BPM has been designed based on the exponential coupler stripline type (the diameter of 134 mm and the length of 300 mm) and it is now under fabrication. In this BPM system, the frequency characteristics are corrected using the equalizer as bunch signals are differentiated. The design detail and the performance of the new BPM as well as preparation of newly installed exciter and power amplifiers will be presented. We will also report beam test results of head-tail mode suppression at 3 GeV with the bunch length of 150-250 ns.
|
| Paper |
download THOAA03.PDF [0.746 MB / 3 pages] |
| Slides |
download THOAA03_TALK.PDF [1.154 MB] |
| Export |
download ※ BibTeX
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※ EndNote |
| Conference |
IPAC2014, Dresden, Germany |
| Series |
International Particle Accelerator Conference (5th) |
| Proceedings |
Link to full IPAC2014 Proccedings |
| Session |
Contributed Oral Presentations, Beam Instrumentation and Feedback |
| Date |
19-Jun-14 09:30–10:30 |
| Main Classification |
06 Instrumentation, Controls, Feedback & Operational Aspects |
| Sub Classification |
T05 Beam Feedback Systems |
| Keywords |
feedback, kicker, injection, synchrotron, betatron |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editors |
Christine Petit-Jean-Genaz (CERN, Geneva, Switzerland); Gianluigi Arduini (CERN, Geneva, Switzerland); Peter Michel (HZDR, Dresden, Germany); Volker RW Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-132-8 |
| Published |
July 2014 |
| Copyright |
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