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Yu, L.-H.

Paper Title Page
TUPEC045 Requirements on the Pulsed Magnets for the Best Injector Performance 1823
 
  • T.V. Shaftan, A. Blednykh, Y. Kawashima, S. Krinsky, J. Rose, L.-H. Yu
    BNL, Upton, Long Island, New York
  
 

Boost­er ex­trac­tion pre­sents a num­ber of prob­lems that in­clude strengths and wave­forms of the pulsed mag­nets and de­sign of the vac­u­um cham­ber. In­sta­bil­i­ties in the boost­er ex­trac­tion may com­pro­mise the ex­tract­ed beam qual­i­ty de­te­ri­o­rat­ing value of high-per­for­mance in­jec­tor de­sign. Here we dis­cuss re­quire­ments and tol­er­ances for the ex­trac­tion sys­tem com­po­nents and meth­ods of in­creas­ing its per­for­mance.

  
TUPD084 High Current Limitations for the NSLS-II Booster 2108
 
  • A. Blednykh, W.X. Cheng, R.P. Fliller, Y. Kawashima, J. Rose, T.V. Shaftan, L.-H. Yu
    BNL, Upton, Long Island, New York
  
 

In this paper, we pre­sent an overview of the im­pact of col­lec­tive ef­fects upon the per­for­mance of the NSLS-II boost­er.

  
WEPEA084 Study of Beam Emittance and Energy Spread Measurements Using SVD and Multiple Flags in the NSLS-II Booster Extraction Beamline 2677
 
  • G.M. Wang, R.P. Fliller, W. Guo, R. Heese, T.V. Shaftan, L.-H. Yu
    BNL, Upton, Long Island, New York
  • Y.-C. Chao
    TRIUMF, Vancouver
  
 

The low beam emit­tance re­quire­ment in the NSLS-II stor­age ring im­pos­es a very tight con­straint on its ac­cep­tance. This re­quires the in­ject­ed beam emit­tance to be very small, for which a re­li­able scheme of mea­sure­ment to de­ter­mine the phase space and mo­men­tum char­ac­ter­is­tics of the beam com­ing out the boost­er is nec­es­sary. The orig­i­nal scheme based on the boost­er-to-dump trans­port line was ham­pered by the dif­fi­cul­ty in de­cou­pling be­ta­tron os­cil­la­tion from dis­per­sion, due to high con­cen­tra­tion of dipoles and lim­it­ed num­ber of quads after the boost­er. This paper will de­scribe the al­ter­na­tive method being planned to use the boost­er ex­trac­tion line to mea­sure the beam emit­tance and en­er­gy spread, as well as the as­so­ci­at­ed er­rors.

  
WEPEA082 Status of the NSLS-II Injection System Development 2672
 
  • T.V. Shaftan, A. Blednykh, W.R. Casey, L.R. Dalesio, R. Faussete, M.J. Ferreira, R.P. Fliller, G.S. Fries, G. Ganetis, W. Guo, R. Heese, H.-C. Hseuh, Y. Hu, P.K. Job, E.D. Johnson, Y. Kawashima, B.N. Kosciuk, S. Kowalski, S. Krinsky, Y. Li, H. Ma, R. Meier, S. Ozaki, D. Padrazo, B. Parker, I. Pinayev, M. Rehak, J. Rose, S. Sharma, O. Singh, P. Singh, J. Skaritka, C.J. Spataro, G.M. Wang, F.J. Willeke, L.-H. Yu
    BNL, Upton, Long Island, New York
  
 

We dis­cuss sta­tus and plans of de­vel­op­ment of the NSLS-II in­jec­tor. The in­jec­tor con­sists of 200 MeV linac, 3-GeV boost­er, trans­port lines and in­jec­tion straight sec­tion. The sys­tem de­sign is now near­ly com­plet­ed and the in­jec­tor de­vel­op­ment is in the pro­cure­ment phase. The in­jec­tor com­mis­sion­ing is planned to take place in 2012.