Author: Hama, H.
Paper Title Page
MOPEA033 Status of Upgrade Project of the 1.2 GeV Booster Synchrotron at Tohoku University 151
 
  • F. Hinode, H. Hama, S. Kashiwagi, T. Muto, I. Nagasawa, K. Nanbu, Y. Shibasaki, K. Takahashi
    Tohoku University, Research Center for Electron Photon Science, Sendai, Japan
  
  The 1.2 GeV elec­tron syn­chro­tron has been op­er­ated for nu­clear physics ex­per­i­ment since 1997 in Elec­tron Light Sci­ence Cen­tre, To­hoku Uni­ver­sity, in which the high en­ergy gamma-rays via bremsstrahlung has been sup­plied for hadron physics. After the Great East Japan Earth­quake in March 2011, re­cov­ery and re­con­struc­tion work of the ac­cel­er­a­tor com­plex is in progress vig­or­ously. While the com­pact 90 MeV linac is newly con­structed as the ded­i­cated in­jec­tor for the syn­chro­tron, old power sup­plies of syn­chro­tron mag­nets and also pulsed mag­nets for beam in­jec­tion are going to be re­placed in the syn­chro­tron. Fur­ther­more re­place­ments of some quadru­pole mag­nets to the com­bined func­tion mag­nets with sex­tu­pole com­po­nent are also on going. Mod­i­fy­ing the ring op­tics so as to in­tro­duce the hor­i­zon­tal dis­per­sion on the com­bined mag­net po­si­tion, this re­place­ment work will make it pos­si­ble to cor­rect the chro­matic­ity. At the pre­sent, power sup­plies and com­bined mag­nets have been man­u­fac­tured and those in­stal­la­tions will be com­pleted soon. We will pre­sent the cur­rent sta­tus of up­grade pro­ject of the booster syn­chro­tron.  
 
TUPME018 Construction of New 90 MeV Injector Linac for the 1.2 GeV Booster Synchrotron at Tohoku University 1607
 
  • S. Kashiwagi, H. Hama, F. Hinode, M. Kawai, T. Muto, I. Nagasawa, K. Nanbu, Y. Shibasaki, K. Takahashi
    Tohoku University, Research Center for Electron Photon Science, Sendai, Japan
  • N.Y. Huang
    NTHU, Hsinchu, Taiwan
  
  The Great East Japan Earth­quake (March 11, 2011) has in­flicted enor­mous dam­age on the ac­cel­er­a­tor fa­cil­ity of Re­search Cen­ter for Elec­tron Pho­ton Sci­ence, To­hoku Uni­ver­sity. A 300 MeV linac op­er­ated for 46 years as an ac­cel­er­a­tor for ra­dioiso­tope pro­duc­tion and also as an in­jec­tor of the 1.2 GeV booster syn­chro­tron for nu­clear physics ex­per­i­ments. The ac­cel­er­a­tor will be re­built with all the re­cy­clable com­po­nents. New small linac is con­structed as the in­jec­tor for the booster syn­chro­tron. The in­jec­tor con­sists of thermionic rf-gun, two 3m-long ac­cel­er­at­ing struc­tures, and trans­port line to the syn­chro­tron. The max­i­mum en­ergy of in­jec­tor is 90 MeV with beam load­ing. The de­tail of the in­jec­tor linac is in­tro­duced in this con­fer­ence.