A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z  

Liu, Z.

Paper Title Page
WGA15 Orbit Response Matrix Analysis Applied at SNS Ring 89
 
  • Z. Liu
    IUCF, Bloomington, Indiana
  • S.M. Cousineau, J. Galambos, J.A. Holmes, M.A. Plum
    ORNL, Oak Ridge, Tennessee
  • X. Huang
    SLAC, Menlo Park, California
 
 

Recently, discrepancies between model-based and observed linear optics, such as the tune and the closed orbit, have been observed in the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory. Accurate accelerator modeling is very important for machine control during the ongoing power ramp up. The Orbit Response Matrix (ORM) method is applied here to find and correct errors in the linear optics of the SNS ring. With the closed orbit data (4472 data points), we are able to calibrate the strength of the steering magnets, the BPM gain factors, and 6 quadrupole power supplies. Current results and remaining challenges will be presented and discussed.