Vacuum system for the KEK proton synchrotron

Conference · Wed Jun 01 04:00:00 EDT 1977 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:7087262

Horikoshi, G; Satoh, K; Mizuno, H; Kubo, T; Watanabe, H

The construction and characteristic points of the vacuum system of KEK 12 GeV proton synchrotron are reported. The whole system is divided into three parts, i.e., for the injector and the beam transportation line to the booster, for the booster and transportation line to the main ring, and for the main ring. Of these, only the last two vacuum systems are reported. In the design and construction, many new attempts were made, and some of them are reported. The designed value of the average pressures in the booster and in the main ring are 4 x 10/sup -4/ Pa and 1 x 10/sup -4/ Pa respectively. These values correspond to the beam lives of 300 ms (in the booster) and 10 s (in the main ring), for a beam with injection energies of 20 MeV and 500 MeV respectively. Actually, the average pressures of 6 x 10/sup -5/ Pa in the booster and 3 x 10/sup -5/ Pa in the main ring are accomplished, which are much less than the designed value.

• Research Organization: National Lab. for High Energy Physics, Ibaraki, Japan
• OSTI ID: 7087262
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-24:3
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420700 -- Engineering-- Vacuum Engineering-- (-1987)
43 PARTICLE ACCELERATORS
430300* -- Particle Accelerators-- Auxiliaries & Components
ACCELERATORS
CYCLIC ACCELERATORS
DEGASSING
DESIGN
FLANGES
GASKETS
KEK SYNCHROTRON
LABORATORY EQUIPMENT
PUMPS
SEALS
SPUTTER-ION PUMPS
SYNCHROTRONS
TUBES
VACUUM PUMPS
VACUUM SYSTEMS