TY - JOUR
T1 - Initial-beam-loading compensation system for high-intensity electron linacs
AU - Satoh, M.
AU - Matsumoto, T.
AU - Shidara, T.
AU - Fukuda, S.
AU - Kobayashi, H.
AU - Kamiya, Y.
AU - Nakamura, N.
AU - Koseki, T.
AU - Miura, S.
PY - 2005/2/11
Y1 - 2005/2/11
N2 - We developed an initial-beam-loading compensation system for electron linacs. This system consists of a ΔΦ-A (phase-to-amplitude) modulator and a fast-phase detector. The ΔΦ-A modulator can modulate the phase and the amplitude of a low-power RF simultaneously. Low-power and high-power tests were successfully carried out at KEK. The result of the high-power tests show that our system can reduce the energy spread from 27 to 0.3% for a 300-mA average current. The system that we developed can be a powerful tool for initial-beam-loading compensation. In addition, a numerical calculation method using the power-flow matrix was formulated to perform a fast beam-energy calculation with a simple algorithm. This method can be used to obtain the target RF waveform for energy-spread compensation.
AB - We developed an initial-beam-loading compensation system for electron linacs. This system consists of a ΔΦ-A (phase-to-amplitude) modulator and a fast-phase detector. The ΔΦ-A modulator can modulate the phase and the amplitude of a low-power RF simultaneously. Low-power and high-power tests were successfully carried out at KEK. The result of the high-power tests show that our system can reduce the energy spread from 27 to 0.3% for a 300-mA average current. The system that we developed can be a powerful tool for initial-beam-loading compensation. In addition, a numerical calculation method using the power-flow matrix was formulated to perform a fast beam-energy calculation with a simple algorithm. This method can be used to obtain the target RF waveform for energy-spread compensation.
KW - Beam-loading compensation
KW - Electron linac
KW - Multi-bunch
KW - RF modulation
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U2 - 10.1016/j.nima.2004.08.124
DO - 10.1016/j.nima.2004.08.124
M3 - Article
AN - SCOPUS:15744384912
VL - 538
SP - 116
EP - 126
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1-3
ER -