Energy dissipation and heat load suppression of intense heavy ion beams in gas stripper

2017 Fiscal Year Final Research Report

• Project/Area Number: 26790074
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Quantum beam science
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: Imao Hiroshi 国立研究開発法人理化学研究所, 仁科加速器研究センター, 専任研究員 (30585542)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 荷電ストリッパー

Outline of Final Research Achievements

Charge strippers are key devices to determine the possible intensities of the ion beams generated in most heavy-ion accelerator projects. The recent realization of the He gas stripper at the RIBF is an important breakthrough for the intensity upgrade of heavy ion beams. The temperature increase and density reduction of the gas stripper due to the energy loss of the powerful ion beams present as a principal bottleneck for increasing the ion intensities further. In the present study, we measured the temperature rise of the He gas due to uranium beams in various beam conditions and compared with the calculations which showed the low heating efficiency. We also developed the spectrometer for the vacuum ultra-violet lights and tried to observe the light emissions from uranium beams to search the new energy path. The novel differential pumping technology was developed in the present study.

Free Research Field

加速器物理