• R. Heese, R.P. Fliller, R. Meier, B. Parker, M. Rehak, T.V. Shaftan, F.J. Willeke, P. Zuhoski
  BNL, Upton, Long Island, New York
• E. Weihreter
  BESSY GmbH, Berlin

NSLS-II injection system contains 13 pulsed magnets and their power supplies for injection in and extraction from the booster and injection in the storage ring. Requirement of having injection process transparent for the NSLS-II users translates into challenging specifications for the pulsed magnet design. To keep the beam jitter within 10% of radiation source size, relative kicker mismatch must be kept on 10^-5 level and residual vertical field must be below few gauss in amplitude. In this paper we discuss specifications for the pulsed magnets, their preliminary design and parameters' tolerances.

• T.V. Shaftan, R.P. Fliller, R. Heese, E.D. Johnson, R. Meier, M. Rehak, F.J. Willeke
  BNL, Upton, Long Island, New York
• E. Weihreter
  BESSY GmbH, Berlin

The NSLS-II is a state of the art 3 GeV synchrotron light source that is being developed at BNL. The 9.3 meter long injection straight section of NSLS-II storage ring currently fits a conventional injection set-up that consists of four kickers producing a closed bump together with a DC septum and a pulsed septum. In this paper we analyze alternative options based on: a) injection via a pulsed sextupole and b) injection with a Lambertson septum. We discuss dynamics of the injected and stored beams and, consequently, magnet specifications and tolerances. In conclusion we summarize advantages and drawbacks of each injection scheme.