| Paper |
Title |
Other Keywords |
Page |
| SUPB031 |
The Nonresonant Perturbation Theory Based Field Measurement and Tuning of a Linac Accelerating Structure |
linac, electromagnetic-fields, pick-up, feedback |
80 |
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- W. Fang, Q. Gu, Z.T. Zhao
SINAP, Shanghai, People's Republic of China
- D.C. Tong
TUB, Beijing, People's Republic of China
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Assisted by the bead pull technique, the nonresonant perturbation theory is applied for measuring and tuning the field of the linac accelerating structure. The method is capable of making non-touch measurement, amplitude and phase diagnostics, real time mismatch feedback and field tuning. Main considerations on measurement system and of C-band traveling-wave structure are described, the bead pull measurement and the tuning of the C-band traveling-wave linac accelerating structure are presented.
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| MOPB086 |
The Nonresonant Perturbation Theory Based Field Measurement and Tuning of a Linac Accelerating Structure |
linac, electromagnetic-fields, pick-up, feedback |
375 |
| |
- W. Fang, Q. Gu, Z.T. Zhao
SINAP, Shanghai, People's Republic of China
- D.C. Tong
TUB, Beijing, People's Republic of China
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| |
Assisted by the bead pull technique, the nonresonant perturbation theory is applied for measuring and tuning the field of the linac accelerating structure. The method is capable of making non-touch measurement, amplitude and phase diagnostics, real time mismatch feedback and field tuning. Main considerations on measurement system and of C-band traveling-wave structure are described, the bead pull measurement and the tuning of the C-band traveling-wave linac accelerating structure are presented.
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| TUPLB02 |
Deflecting Structures with Minimized Level of Aberrations |
controls, emittance, diagnostics, electromagnetic-fields |
445 |
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- V.V. Paramonov
RAS/INR, Moscow, Russia
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Funding: in part RBFR N 12-02-00654a
Deflecting structures are now widely used for bunch phase space manipulations either in bunch rotation for special bunch diagnostic or in emittance exchange experiments. As a tool for manipulation, the structure itself should provide the minimal phase space perturbations due to non linear additives in the field distribution. Even if the field of synchronous harmonic is aberration free, the higher space harmonics provide significant non linear additives in the field distribution, leading to emittance growth during phase space manipulation. Criterion of the field quality estimation is developed and deflecting structures are considered for minimization of non linear additives. Examples with almost aberration free total field distributions are presented.
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Slides TUPLB02 [0.727 MB]
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| TUPB002 |
Deflecting Structures with Minimized Level of Aberrations |
controls, emittance, diagnostics, electromagnetic-fields |
476 |
| |
- V.V. Paramonov
RAS/INR, Moscow, Russia
|
|
| |
Funding: in part RBFR N 12-02-00654a
Deflecting structures are now widely used for bunch phase space manipulations either in bunch rotation for special bunch diagnostic or in emittance exchange experiments. As a tool for manipulation, the structure itself should provide the minimal phase space perturbations due to non linear additives in the field distribution. Even if the field of synchronous harmonic is aberration free, the higher space harmonics provide significant non linear additives in the field distribution, leading to emittance growth during phase space manipulation. Criterion of the field quality estimation is developed and deflecting structures are considered for minimization of non linear additives. Examples with almost aberration free total field distributions are presented.
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