Author: Honda, Y.
Paper Title Page
WG102 Construction and Commissioning of Compact-ERL Injector at KEK 16
 
  • S. Sakanaka, M. Adachi, S. Adachi, M. Akemoto, D.A. Arakawa, S. Asaoka, K. Enami, K. Endo, S. Fukuda, T. Furuya, K. Haga, K. Hara, K. Harada, T. Honda, Y. Honda, H. Honma, T. Honma, K. Hosoyama, K. Hozumi, A. Ishii, E. Kako, Y. Kamiya, H. Katagiri, H. Kawata, Y. Kobayashi, Y. Kojima, Y. Kondou, O. A. Konstantinova, T. Kume, T. Matsumoto, H. Matsumura, H. Matsushita, S. Michizono, T. Miura, T. Miyajima, H. Miyauchi, S. Nagahashi, H. Nakai, H. Nakajima, N. Nakamura, K. Nakanishi, K. Nakao, K.N. Nigorikawa, T. Nogami, S. Noguchi, S. Nozawa, T. Obina, T. Ozaki, F. Qiu, H. Sagehashi, H. Sakai, S. Sasaki, K. Satoh, M. Satoh, Y. Seimiya, T. Shidara, M. Shimada, K. Shinoe, T. Shioya, T. Shishido, M. Tadano, T. Tahara, T. Takahashi, R. Takai, T. Takenaka, Y. Tanimoto, M. Tobiyama, K. Tsuchiya, T. Uchiyama, A. Ueda, K. Umemori, K. Watanabe, M. Yamamoto, Y. Yamamoto, Y. Yano, M. Yoshida
    KEK, Ibaraki, Japan
  • E. Cenni
    Sokendai, Ibaraki, Japan
  • R. Hajima, S.M. Matsuba, R. Nagai, N. Nishimori, M. Sawamura, T. Shizuma
    JAEA, Ibaraki-ken, Japan
  • J.G. Hwang
    KNU, Deagu, Republic of Korea
  • H. Iijima, M. Kuriki
    HU/AdSM, Higashi-Hiroshima, Japan
  • H. Takaki
    ISSP/SRL, Chiba, Japan
  
  The Compact Energy Recovery Linac (cERL) is under construction at KEK for the future 3-GeV ERL project. During the past year, we have finished key devices, such as a 500-kV DC photocathode electron gun and superconducting (SC) cryomodules for the injector and for the main linac. We installed these devices into a shielding room of the cERL, and carried out high-voltage or high-power tests successfully. In the April of 2013, the 5-MeV injector of the cERL was completed. During April to June in 2013, we commissioned the cERL-injector successfully, and carried out beam tuning and studies. We will present the construction and commissioning of the cERL injector, together with the construction status of a return loop.  
slides icon Slides WG102 [6.910 MB]  
 
WG108 Construction of the 2nd 500 kV Photocathode DC-gun at KEK 28
 
  • M. Yamamoto, Y. Honda, M. Kobayashi, T. Miyajima, T. Uchiyama
    KEK, Ibaraki, Japan
  • R. Hajima, S.M. Matsuba, R. Nagai, N. Nishimori
    JAEA, Ibaraki-ken, Japan
  • M. Kuriki
    HU/AdSM, Higashi-Hiroshima, Japan
  • H. Kurisu
    Yamaguchi University, Ube-Shi, Japan
  • M. Kuwahara
    Nagoya University, Nagoya, Japan
  • H. Yoshida
    AIST, Tsukuba, Japan
  
  The 2nd 500 kV DC photocathode electron gun for a ERL injector was constructed at KEK. The gun has new functions such as employ new material for ceramic insulator, insulated anode electrode for dark current monitor, repeller electrode for elimination backward ions, extreme high vacuum pumps and so on. A high voltage conditioning is just begun from this summer. In addition, a new cathode preparation system has been developed. It can prepare three cathodes simultaneously and storage many cathodes in a good vacuum condition. The detail design was finished and the construction of all in-vacuum components is progressing.  
slides icon Slides WG108 [1.802 MB]  
 
WG109
 DC Photoemission Gun Development for the Compact ERL  
 
  • N. Nishimori, R. Hajima, S.M. Matsuba, R. Nagai
    JAEA, Ibaraki-ken, Japan
  • Y. Honda, T. Miyajima, M. Yamamoto
    KEK, Ibaraki, Japan
  • H. Iijima, M. Kuriki
    HU/AdSM, Higashi-Hiroshima, Japan
  • M. Kuwahara
    Nagoya University, Nagoya, Japan
  
  The next generation ERL light sources require a high brightness and high current electron gun. We have developed a DC photoemission electron gun for the Japanese ERL light source project. This DC gun employs a segmented insulator with guard rings to protect the insulator from field emission generated from central stem electrode. We have successfully applied 500kV on the ceramics with a cathode electrode in place and generated beam from the 500kV gun at Japan Atomic Energy Agency (JAEA) in October 2012. The gun was transferred to the compact ERL (cERL) at KEK for commissioning of the cERL injector. Details of the 500keV beam generation at JAEA as well as beam operational experience at the cERL will be presented.  
slides icon Slides WG109 [1.342 MB]  
 
PS03
 Beam Performance Measurement at Compact-ERL Injector  
 
  • Y. Honda, T. Miyajima
    KEK, Ibaraki, Japan
  
  A test accelerator for a future ERL based light source has been constructed in KEK. Commissioning of the injector part has started since April 2013. In order to measure beam performance, a diagnostic beam line has been made at the downstream of the injector. We measured emittance, bunch length, energy spread, etc. This presentation reports the measurement setups and the results.