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Structure reform and special economic zone in large helium liquifier complex for the 4th generation ERL light source

ERL第4世代放射光用大型He冷凍施設における構造改革と経済特区

峰原 英介

Minehara, Eisuke

第4世代ERL放射光の実現には、2K極低温に冷却された500m長の超伝導空洞とこれを冷却する大型極低温冷凍機が必要である。この運転は半永久無昇温運転により無故障運転を実現するとしても、この全系の完成前の保守と建設は現在の高圧ガスの規制の下では極めて高価であり、故障の元となる非合理な作業が多く、また大量の労力が必要な膨大な申請書類の処理が必要となる。これを解決するため、構造改革経済特区の実現を図る予定である。このほか放射光施設での非合理な規制解消を併せて図る予定である。

As the fourth generation energy recovering super-conducting linac (ERL) driven light source is planned to develop and to build as the most advanced national light source facility in Japan, this is a conceptual design work and key components developmental programs including a 200MeV prototype construction. Our existing 4K zero-boil off refrigerator cryogenic and a huge 2K liquefier facility will be combined to make a new hybrid one. Because all cryogenic devices in Japan have been seriously and unnecessarily controlled and affected their safety, maintenance, operation and construction over these several tens years, we will therefore have to cut back excess safety regulation in Japanese domestic high pressure vessel code using a structure reform and special economic zone policy.

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