A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z  

Moon, S.-I.

Paper Title Page
THPMN047 Commissioning Scenario for L-band Electron Accelerator by PARMELA Code 2820
  • H. R. Yang, M.-H. Cho, S. H. Kim, S.-I. Moon, W. Namkung
    POSTECH, Pohang, Kyungbuk
  • S. D. Jang, S. J. Kwon, J.-S. Oh, S. J. Park, Y. G. Son
    PAL, Pohang, Kyungbuk
  Funding: Work supported by KAPRA and PAL

An intense L-band electron accelerator is now being installed at PAL (Pohang Accelerator Laboratory) for initial tests. It is capable of producing 10-MeV electron beams with average 30 kW. This accelerator has a diode-type E-gun, a pre-buncher cavity, and an accelerating column with the built-in bunching section. We conduct simulational study for the commissioning scenario by the PARMELA code. At first, we observe the beam position and the beam current when the beam line is misaligned under no fields. Next, turning on focusing solenoids we observe the beam position change to check the alignments of the solenoids. Finally, varying RF power and phase of the pre-buncher we observe beam energy and beam power to obtain the optimum pre-buncher condition. In this paper, we present simulational results for each step. We also present commissioning strategies based on these results.

THPMN048 Cold Test on C-band Standing-wave Accelerator 2823
  • S. H. Kim, M.-H. Cho, Y. M. Gil, S.-I. Moon, W. Namkung, H. R. Yang
    POSTECH, Pohang, Kyungbuk
  • J. Jang, J.-S. Oh, S. J. Park
    PAL, Pohang, Kyungbuk
  Funding: Work supported by PAL.

For a compact X-ray source, we designed a C-band standing-wave electron accelerator. It is capable of producing 4-MeV electron beams with 50-mA peak beam current. As an RF source, we use 5-GHz magnetron with duty factor of 0.08%. The accelerating structure is bi-periodic and on-axis coupled structure, operated with π/2-mode standing waves. Each cavity in the bunching and normal cell is designed by the MWS code and measured with aluminium prototype cavity. As per the dispersion relation derived from the measurement results, calibration factor obtained for the actual copper cavity.