KEK digital accelerator
The High Energy Accelerator Research Organization KEK digital accelerator (KEK-DA) is a renovation of the KEK 500 MeV booster proton synchrotron, which was shut down in 2006. The existing 40 MeV drift tube linac and rf cavities have been replaced by an electron cyclotron resonance (ECR) ion source e...
Main Authors: | , , , , , , , , , , , , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
American Physical Society
2011-07-01
|
Series: | Physical Review Special Topics. Accelerators and Beams |
Online Access: | http://doi.org/10.1103/PhysRevSTAB.14.071301 |
id |
doaj-5dcd8270d55446f4be75c727bb903029 |
---|---|
record_format |
Article |
spelling |
doaj-5dcd8270d55446f4be75c727bb9030292020-11-25T01:35:45ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022011-07-0114707130110.1103/PhysRevSTAB.14.071301KEK digital acceleratorT. IwashitaT. AdachiK. TakayamaK. W. LeoT. AraiY. ArakidaM. HashimotoE. KadokuraM. KawaiT. KawakuboTomio KuboK. KoyamaH. NakanishiK. OkazakiK. OkamuraH. SomeyaA. TakagiA. TokuchiM. WakeThe High Energy Accelerator Research Organization KEK digital accelerator (KEK-DA) is a renovation of the KEK 500 MeV booster proton synchrotron, which was shut down in 2006. The existing 40 MeV drift tube linac and rf cavities have been replaced by an electron cyclotron resonance (ECR) ion source embedded in a 200 kV high-voltage terminal and induction acceleration cells, respectively. A DA is, in principle, capable of accelerating any species of ion in all possible charge states. The KEK-DA is characterized by specific accelerator components such as a permanent magnet X-band ECR ion source, a low-energy transport line, an electrostatic injection kicker, an extraction septum magnet operated in air, combined-function main magnets, and an induction acceleration system. The induction acceleration method, integrating modern pulse power technology and state-of-art digital control, is crucial for the rapid-cycle KEK-DA. The key issues of beam dynamics associated with low-energy injection of heavy ions are beam loss caused by electron capture and stripping as results of the interaction with residual gas molecules and the closed orbit distortion resulting from relatively high remanent fields in the bending magnets. Attractive applications of this accelerator in materials and biological sciences are discussed.http://doi.org/10.1103/PhysRevSTAB.14.071301 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
T. Iwashita T. Adachi K. Takayama K. W. Leo T. Arai Y. Arakida M. Hashimoto E. Kadokura M. Kawai T. Kawakubo Tomio Kubo K. Koyama H. Nakanishi K. Okazaki K. Okamura H. Someya A. Takagi A. Tokuchi M. Wake |
spellingShingle |
T. Iwashita T. Adachi K. Takayama K. W. Leo T. Arai Y. Arakida M. Hashimoto E. Kadokura M. Kawai T. Kawakubo Tomio Kubo K. Koyama H. Nakanishi K. Okazaki K. Okamura H. Someya A. Takagi A. Tokuchi M. Wake KEK digital accelerator Physical Review Special Topics. Accelerators and Beams |
author_facet |
T. Iwashita T. Adachi K. Takayama K. W. Leo T. Arai Y. Arakida M. Hashimoto E. Kadokura M. Kawai T. Kawakubo Tomio Kubo K. Koyama H. Nakanishi K. Okazaki K. Okamura H. Someya A. Takagi A. Tokuchi M. Wake |
author_sort |
T. Iwashita |
title |
KEK digital accelerator |
title_short |
KEK digital accelerator |
title_full |
KEK digital accelerator |
title_fullStr |
KEK digital accelerator |
title_full_unstemmed |
KEK digital accelerator |
title_sort |
kek digital accelerator |
publisher |
American Physical Society |
series |
Physical Review Special Topics. Accelerators and Beams |
issn |
1098-4402 |
publishDate |
2011-07-01 |
description |
The High Energy Accelerator Research Organization KEK digital accelerator (KEK-DA) is a renovation of the KEK 500 MeV booster proton synchrotron, which was shut down in 2006. The existing 40 MeV drift tube linac and rf cavities have been replaced by an electron cyclotron resonance (ECR) ion source embedded in a 200 kV high-voltage terminal and induction acceleration cells, respectively. A DA is, in principle, capable of accelerating any species of ion in all possible charge states. The KEK-DA is characterized by specific accelerator components such as a permanent magnet X-band ECR ion source, a low-energy transport line, an electrostatic injection kicker, an extraction septum magnet operated in air, combined-function main magnets, and an induction acceleration system. The induction acceleration method, integrating modern pulse power technology and state-of-art digital control, is crucial for the rapid-cycle KEK-DA. The key issues of beam dynamics associated with low-energy injection of heavy ions are beam loss caused by electron capture and stripping as results of the interaction with residual gas molecules and the closed orbit distortion resulting from relatively high remanent fields in the bending magnets. Attractive applications of this accelerator in materials and biological sciences are discussed. |
url |
http://doi.org/10.1103/PhysRevSTAB.14.071301 |
work_keys_str_mv |
AT tiwashita kekdigitalaccelerator AT tadachi kekdigitalaccelerator AT ktakayama kekdigitalaccelerator AT kwleo kekdigitalaccelerator AT tarai kekdigitalaccelerator AT yarakida kekdigitalaccelerator AT mhashimoto kekdigitalaccelerator AT ekadokura kekdigitalaccelerator AT mkawai kekdigitalaccelerator AT tkawakubo kekdigitalaccelerator AT tomiokubo kekdigitalaccelerator AT kkoyama kekdigitalaccelerator AT hnakanishi kekdigitalaccelerator AT kokazaki kekdigitalaccelerator AT kokamura kekdigitalaccelerator AT hsomeya kekdigitalaccelerator AT atakagi kekdigitalaccelerator AT atokuchi kekdigitalaccelerator AT mwake kekdigitalaccelerator |
_version_ |
1725066448396615680 |