Slow extraction from the J-PARC main ring using a dynamic bump
| Autor: | Takuro Kimura, Yoshitugu Arakaki, Ryotaro Muto, Masahito Tomizawa, Yoshihisa Shirakabe, Eiichi Yanaoka, Hikaru Sato, Katsuya Okamura, Shigeru Murasugi |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Nuclear and High Energy Physics 010308 nuclear & particles physics business.industry Extraction (chemistry) Particle accelerator Ring (chemistry) 01 natural sciences law.invention Power (physics) Optics law Achromatic lens 0103 physical sciences Physics::Accelerator Physics Upstream (networking) J-PARC 010306 general physics business Instrumentation Beam (structure) |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 902:51-61 |
| ISSN: | 0168-9002 |
| Popis: | A dynamic bump under the achromatic condition has been applied for third integer slow extraction from the Japan Proton Accelerator Research Complex main ring. This dynamic bump scheme has drastically reduced beam loss rate for slow extraction compared to that for a fixed bump mode. The low beam loss rate for slow extraction has been retained for high power operations. A beam power of 41 − 44.4 kW was achieved for physics runs using the slow extraction by applying the dynamic bump scheme. The beam profile measured just upstream of the target indicates that the beam spot at the target does not travel over the entire extraction time. This behavior is advantageous for experimental data acquisition. |
| Databáze: | OpenAIRE |
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