Gamma-ray Irradiation Experiment of Magnetically Suspended Compound Molecular Pump
| Autor: | Motoo Yoshida, Norio Ogiwara, Yukio Yamato, Kaoru Wada, Tatsuo Nakayasu, Michikazu Kinsho |
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| Rok vydání: | 2004 |
| Předmět: |
Materials science
business.industry Physics::Optics Gamma ray irradiation Particle accelerator Electromagnetic suspension Radiation Condensed Matter Physics Synchrotron Surfaces Coatings and Films law.invention Nuclear magnetic resonance Semiconductor Ion pump law Physics::Accelerator Physics Optoelectronics Irradiation Electrical and Electronic Engineering business |
| Zdroj: | SHINKU. 47:251-254 |
| ISSN: | 1880-9413 0559-8516 |
| DOI: | 10.3131/jvsj.47.251 |
| Popis: | 3 GeV-RCS (Rapid Cycling Synchrotron) is constructed in Japan Atomic Energy Research Institute in Proton Accelerator Complex (J-PARC).It will have been composed to the combination magnetic suspension type turbo molecular pump is used at rough pumping and ion pump is used at main pumping in 3 GeV-RCS vacuum pumping system.However, the magnetic suspension type turbo molecular pump uses semiconductor chip for magnetic suspension control inside. This semiconductor chip has problem to use under the radiation and high temperature applications such as accelerator and semiconductor process.The pump used for Gamma-ray irradiation experiment is magnetically suspended compound molecular pump TG1300M is designed without semiconductor chip inside. |
| Databáze: | OpenAIRE |
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