کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10716425 | 1027559 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Slow beam-extraction method using a fast Q-magnet assisted by RF-knockout
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
A new method for slow beam-extraction 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 RF-knockout to just inside the boundary 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 Heavy Ion Medical Accelerator in Chiba (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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 553, Issue 3, 21 November 2005, Pages 400-406
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 553, Issue 3, 21 November 2005, Pages 400-406
نویسندگان
Tetsuya Nakanishi, Takuji Furukawa, Katsuhisa Yoshida, Koji Noda,