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| WEPE02 |
Performance Evaluation of Fast Closing Shutter System at the SPring-8 Front-end |
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- S. Takahashi
JASRI/SPring-8, Hyogo, Japan
- M. Sano, A. Watanabe
Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), Hyogo, Japan
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The fast closing shutter (FCS) system plays an important role in protecting the ultra-high vacuum in the SPring-8 storage ring from a sudden vacuum accident in the beam-lines. In order to predict the transit time of the shock wave and the following pressure increase, a shock tube system with an inner diameter of 35 mm and a total length of 10 m was prepared to measure the shock Mach number. Experiments have been conducted that simulated an inrush of the atmosphere into the high-vacuum (~10-3 Pa) pipe by using a trigger system that combines of a thin cellophane diaphragm with a plunger. Special ionization gauges with a high-speed amplifier are distributed about every 1 m to detect the transit time of the shock wave and to measure the pressure in a low-pressure chamber after the actuation of the FCS system. By inserting vacuum components with various cross-sectional shapes including actual front-end components into the shock tube, the attenuation in the shock wave was systematically investigated.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE02
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| About • |
paper received ※ 06 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017 |
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