High-current single bunch electron linear accelerator

S. Takeda, K. Tsumori, N. Kimura, T. Yamamoto, T. Hori, T. Sawai, J. Ohkuma, S. Takamuku, T. Okada, K. Hayashi, M. Kawanishi

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


An injector of an electron linear accelerator has been modified at ISIR of Osaka University in order to increase a single bunch charge from 14 nC to 60 nC. A 6th subharmonic prebuncher has been replaced with two 12th subharmonic prebunchers and a 6th subharmonic prebuncher which are newly constructed. A one-dimensional disk model has been used to calculate the bunching of the beam and to decide the optimum location of the subharmonic prebunchers. The subharmonic prebunchers are immersed in a solenoidal magnetic field so that the electron beam is confined during the travel through the drift region. The single bunch of 16 - 20 ps duration and up to 67 nC in charge, with the energy spread of 0.7 - 2.5 % over the range of 24 - 34 MeV, and a repetition rate from a single shot to 720 pps can be obtained. The energy spread depends on the charge and the minimum spread is 0.7 % at 33 nC. The single bunch of 25 - 45 nC in charge is used for the experiments in routine work.

Original languageEnglish
Pages (from-to)3219-3221
Number of pages3
JournalIEEE Transactions on Nuclear Science
Issue number5
Publication statusPublished - 1985 Oct


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