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Title: An equivalent circuit model and power calculations for the APS SPX crab cavities.

An equivalent parallel resistor-inductor-capacitor (RLC) circuit with beam loading for a polarized TM110 dipole-mode cavity is developed and minimum radio-frequency (rf) generator requirements are calculated for the Advanced Photon Source (APS) short-pulse x-ray (SPX) superconducting rf (SRF) crab cavities. A beam-loaded circuit model for polarized TM110 mode crab cavities was derived. The single-cavity minimum steady-state required generator power has been determined for the APS SPX crab cavities for a storage ring current of 200mA DC current as a function of external Q for various vertical offsets including beam tilt and uncontrollable detuning. Calculations to aid machine protection considerations were given.
Authors:
 [1]
  1. (Accelerator Systems Division (APS))
Publication Date:
OSTI Identifier:
1037971
Report Number(s):
ANL/APS/LS-324
TRN: US1201779
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Technical Report
Research Org:
Argonne National Laboratory (ANL)
Sponsoring Org:
SC
Country of Publication:
United States
Language:
ENGLISH
Subject:
43 PARTICLE ACCELERATORS; ADVANCED PHOTON SOURCE; CAVITIES; CRABS; EQUIVALENT CIRCUITS; STORAGE RINGS