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Mortazavi, P.

Paper Title Page
TUPMS071 Upgrade Alternatives for the NSLS Superconducting Wiggler 1335
 
  • M. G. Fedurin, P. Mortazavi, J. B. Murphy, G. Rakowsky
    BNL, Upton, Long Island, New York
 
  The superconducting wiggler (SCW) with 4.2 Tesla field in 5 main poles has been in operation on the NSLS X-ray storage ring for more than 20 years. The inefficient cryogenic system of this wiggler uses a closed-cycle refrigerator requiring constant maintenance. It is possible to replace this insertion device with a 13-pole SCW originally built by Oxford Instruments. The cryostat of this device could be upgraded to reduce the liquid He consumption using cryocoolers, thereby greatly reducing the refrigerator operating expense. A second option is a new design of a SCW with a magnetic period and number of poles appropriate to the current users needs. All these upgrade possibilities will be described in the paper.  
WEPMS091 Conceptual Design of the NSLS-II RF Systems 2550
 
  • J. Rose, A. Blednykh, W. Guo, P. Mortazavi, N. A. Towne
    BNL, Upton, Long Island, New York
 
  RF system requirements are derived from machine parameters and beam stability specifications. The conceptual design of the RF system for NSLS-II to meet these requirements is presented, consisting of 500 MHz superconducting main cavities, 1500 MHz SCRF harmonic cavities for bunch lengthening, and the RF power and cryogenic systems.