Experiences and Future Plans of Movable Mask System for the High Current Collider KEK B-factory.
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- SUETSUGU Yusuke
- High Energy Accelerator Research Organization
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- KAGEYAMA Tatsuya
- High Energy Accelerator Research Organization
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- TAKEUCHI Yasunao
- High Energy Accelerator Research Organization
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- KANAZAWA Ken-ichi
- High Energy Accelerator Research Organization
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- SATOH Kotarou
- High Energy Accelerator Research Organization
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- SANAMI Toshiya
- High Energy Accelerator Research Organization
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- HIRAYAMA Hideo
- High Energy Accelerator Research Organization
Bibliographic Information
- Other Title
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- 大電流衝突型加速器KEKBにおける可動マスクの改良と今後の方向
- ダイ デンリュウ ショウトツガタ カソクキ KEKB ニ オケル カドウ マスク ノ カイリョウ ト コンゴ ノ ホウコウ
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Abstract
The movable mask is a special device for an accelerator that cuts off spent particles near the beam orbit and reduces background of the detector. For the KEKB, an electron/positron collider with two rings, sixteen movable masks had been installed for each ring. The originally designed masks, however, revealed severe troubles of heating, arcing and vacuum leaks at the stored beam currents of several hundreds mA. Several kinds of improved masks had been designed employing RF technologies and were installed to the ring step by step. The latest masks are working well except for the grooves on the mask head. Here the problems of movable masks so far are summarized and the structures of the latest movable masks and their status are presented.
Journal
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- Shinku
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Shinku 45 (3), 157-160, 2002
The Vacuum Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282679041437056
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- NII Article ID
- 10008202848
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- NII Book ID
- AN00119871
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- ISSN
- 18809413
- 05598516
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- NDL BIB ID
- 6144161
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed