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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.