Observation of the Acceleration of a Single Bunch by Using the Induction Device in the KEK Proton Synchrotron

Takayama, Ken; Koseki, K.; Torikai, Kohei; Tokuchi, Akira; Nakamura, Eiji; Arakida, Y.; Shimosaki, Y.; Wake, M.; Kouno, Tadaaki; Horioka, Kazuhiko; Igarashi, S.; Iwashita, T.; Kawasaki, Atsushi; Kishiro, J.; Sakuda, M.; Sato, Hikaru; Shiho, M.; Shirakata, M.; Sueno, T.; Toyama, T.; Watanabe, Minoru; Yamane, Ichirō

doi:10.1103/physrevlett.94.144801

Cited by 34 publications

(4 citation statements)

References 6 publications

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“…These requirements are satisfied by controlling the gate trigger signal for the solid-state switching elements. An intelligent gate-control system to fulfill these requirements had been already experimentally demonstrated in the proof-of-principle experiment of induction synchrotron concept [1]. It consists of DSPs and logic circuits, which process beam bunch signals and produce trigger signals for the SPSs.…”

Section: Gate Trigger Systemmentioning

confidence: 99%

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KEK digital accelerator

Iwashita

Adachi

Takayama

et al. 2011

Phys. Rev. ST Accel. Beams

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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 The existing 40 MeV drift tube linac and rf cavities have been replaced by an electron cyclotron resonance (ECR) ion source embedded in a 200 kV high-voltage terminal and induction acceleration cells, respectively.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.

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Section: Gate Trigger Systemmentioning

confidence: 99%

“…The concept of an induction synchrotron was experimentally demonstrated in 2006 [1][2][3], using the KEK 12 GeV PS. The properties of an induction synchrotron are contrasted with those of a conventional rf synchrotron in Fig.…”

Section: Introductionmentioning

confidence: 99%

KEK digital accelerator

Iwashita

Adachi

Takayama

et al. 2011

Phys. Rev. ST Accel. Beams

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“…A 500-MeV proton beam injected from a pre-accelerator was accelerated to 8 GeV by the pulsed electric field [14].…”

Section: Verification Testsmentioning

confidence: 99%

“…Using the pulsed power modulator developed in a number of stages, primary verification tests on KEK-PS were carried out. A 500-MeV proton beam injected from a pre-accelerator was accelerated to 8 GeV by the pulsed electric field [14].…”

Section: Verification Testsmentioning

confidence: 99%

Development of pulsed power modulator for induction synchrotron

Koseki

Takayama

2008

Electrical Engineering Japan

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SUMMARYA pulsed power modulator for the POP experiment of an induction synchrotron has been developed. Various difficulties in the development of the modulator, such as enormous power dissipation at a MOSFET, the resonant ringing in the output waveform, the isolation from the ground potential, and the incorrect action of a gate driving circuit, have been discussed and solved. The developed power modulator is installed into the existing accelerator, KEK 12-GeV proton synchrotron. The POP experiment of the induction sychrotron has been successfully conducted. A single RF bunch injected from the 500-MeV booster ring was accelerated to the flat-top energy of 8 GeV.

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Induction Synchrotron

Takayama

2010

Induction Accelerators

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Observation of the Acceleration of a Single Bunch by Using the Induction Device in the KEK Proton Synchrotron

Abstract: A single rf bunch in the KEK proton synchrotron was accelerated with an induction acceleration method from the injection energy of 500 MeV to 5 GeV.

Cited by 34 publications

References 6 publications

KEK digital accelerator

KEK digital accelerator

Development of pulsed power modulator for induction synchrotron

Induction Synchrotron

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