Author: Wang, X.T.
Paper Title Page
MOP070 Design Study for the PEHG Experiment at SDUV-FEL 219
 
  • C. Feng, H.X. Deng, B. Liu, D. Wang, X.T. Wang, M. Zhang, T. Zhang, W. Zhang, Z.T. Zhao
    SINAP, Shanghai, People's Republic of China
  
  Funding: This work was partially supported by National Natural Science Foundation of China (11475250, 11175240 and 11205234)
In this paper, de­sign stud­ies for the proof-of-prin­ci­ple ex­per­i­ment of the re­cently pro­posed phase-merg­ing en­hanced har­monic gen­er­a­tion (PEHG) mech­a­nism are pre­sented. A dog­leg and a new de­signed trans­verse gra­di­ent un­du­la­tor should be added in the un­du­la­tor sys­tem of SDUV-FEL to per­form the phase-merg­ing ef­fect. With the help of 3D sim­u­la­tion codes, we show the pos­si­ble per­for­mance of PEHG with the re­al­is­tic pa­ra­me­ters of SDUV-FEL.
* H. Deng, C. Feng, Phys. Rev. Lett. 111, 084801.
** C. Feng, H. Deng, D. Wang, Z. Zhao, New J. Phys.,16, 043021.
*** C. Feng, T. Zhang, H. Deng, Z. Zhao, Phys. Rev. ST Accel. Beams 17, 070701.
 		 
 
MOP072
 Preparation for the CPA-CHG Experiment at SDUV-FEL  
 
  • C. Feng, H.X. Deng, T. Lan, B. Li, B. Liu, D. Wang, X.T. Wang, Z.T. Zhao
    SINAP, Shanghai, People's Republic of China
  
  Chirped pulse am­pli­fi­ca­tion has been shown the­o­ret­i­cally pos­si­ble to gen­er­ate ul­tra-short high in­ten­sity ra­di­a­tion pulses in a seeded FEL. To demon­strate the the­o­ret­i­cal pre­dic­tions, a CPA-CHG ex­per­i­ment is under prepa­ra­tion based on the SDUV-FEL re­cently. We will show the ex­per­i­ment lay­out, op­ti­cal de­sign stud­ies and some pre­lim­i­nary mea­sure­ment re­sults of the op­ti­cal sys­tems in this paper.
* L. Yu, E. Johnson, D. Li, D. Umstader, Physical Review E 49 (1994) 4480
** C. Feng et al. Nuclear Instruments and Methods in Physics Research A 712 (2013) 113 		 
 
THP095 Evolvement of the Laser and Synchronization System for the Shanghai DUV-FEL Test Facility 960
 
  • B. Liu, L. Feng, T. Lan, X.Q. Liu, D. Wang, X.T. Wang, W.Y. Zhang, S.P. Zhong
    SINAP, Shanghai, People's Republic of China
  
  Funding: supported by the National Natural Science Foundation of China (Grant No. 11175241)
Many at­trac­tive ex­per­i­ments in­clud­ing HGHG, EEHG, cas­caded HGHG, chirped pulse am­pli­fi­ca­tion etc. are car­ried out or planned on the Shang­hai Deep Ul­tra-Vi­o­let Free Elec­tron Laser test fa­cil­ity. These ex­per­i­ments are all uti­liz­ing a laser as seed, and need pre­cise syn­chro­niza­tion be­tween the elec­tron beam and the laser pulse. We will de­scribe the his­tory and cur­rent sta­tus of the seed­ing and syn­chro­niza­tion scheme for the SDUV-FEL to­gether with some re­lated ex­per­i­ment re­sults in this paper.