Author: Yano, 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]  
 
WG306 Performance of RF System for Compact ERL Injector in KEK 58
 
  • T. Miura, M. Akemoto, D.A. Arakawa, S. Fukuda, H. Honma, H. Katagiri, T. Matsumoto, H. Matsushita, S. Michizono, H. Nakajima, K. Nakao, F. Qiu, T. Shidara, T. Takenaka, Y. Yano
    KEK, Ibaraki, Japan
  
  The compact ERL injector has a normal conducting buncher cavity and three superconducting (SC) 2-cell cavities. In particular, two input couplers for each SC cavity are equipped top and bottom side of the cavity, symmetrically. 1.3 GHz RF should be delivered with the same phase to the top and bottom couplers. RF sources of the buncher cavity and the 1-st SC cavity are prepared individually. However, the 2-nd and 3-rd SC cavities are operated by vector sum control using one klystron. LLRF system is based on IQ digital feedback using the FPGA. The beam commissioning was started from April 2013. After the optimum RF feedback gain search was performed, the stabilities of RF fields for especially SC cavities in short time range were achieved 0.01%rms and 0.02 deg. rms. Then we confirmed the correlation of beam energy jitter and RF stability. Finally, very low beam energy jitter of 0.006% was achieved.  
slides icon Slides WG306 [1.479 MB]