@inproceedings{oai:repo.qst.go.jp:00053748,
 author = {中西, 哲也 and 古川, 卓司 and 吉田, 克久 and 野田, 耕司 and 中西 哲也 and 古川 卓司 and 吉田 克久 and 野田 耕司},
 book = {Proceedings of the Symposium on Accelerator and Related Technology for Application},
 month = {Jun},
 note = {A new method for slow beam ectraction from a synchrotron ring is proposed, based on controlling a quadrupole field with a fast response (FQ), assisted by a transverse RF-field (RF-knockout).  This method works as follows: 1) particles of a circulating beam are diffused by FR-knockout to just inside the boudary of a separatrix produced under a resonant condition, 2) exciting the FQ shrinks the separatrix to a certain size, and the particles outside the separatrix can be extracted, 3) the fast Q-field is turned off, and 4) the above process is repeated until all of the circulating beam is completely extracted.  This method can extract prescribed particles at required timings quickly and precisely, because it is controlled with only the fast Q-field.  A proof-of-principle experiment was carried out at the HIMAC synchrotron.  As a result, it was verified that the beam was extracted only with exciting the FQ, but not with turning the RF-knockout on.},
 pages = {73--75},
 title = {スポットスキャニング照射に有効なシンクロトロンからのビーム取り出し法},
 volume = {8},
 year = {2006}
}