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Title: Emittance Correction in the 2006 ILC Bunch Compressor

A recent study [1] has indicated substantial potential emittance growth in the ILC bunch compressor due to quad misalignments, BPM misalignments, and pitches in the RF cavities. Table 1 summarizes several results from [1]. In this simulation, quad misalignments and cavity pitches are Gaussian distributed and are considered with respect to the nominal survey line; BPM misalignments are also Gaussian-distributed but are considered with respect to the quadrupole axis. It is assumed that the BPM offsets with respect to the quads are found in a previous quad-shunting BBA step which is not simulated. In this study we seek to repeat the studies documented above, and additionally to perform a study in which additional dispersion bumps are used to further reduce the projected emittance.
Authors:
;
Publication Date:
OSTI Identifier:
900604
Report Number(s):
SLAC-TN-07-004
TRN: US0702505
DOE Contract Number:
AC02-76SF00515
Resource Type:
Technical Report
Research Org:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM EMITTANCE; CORRECTIONS; BEAM BUNCHING; LINEAR COLLIDERS; BEAM MONITORS; BEAM POSITION; ALIGNMENT; QUADRUPOLES Accelerators,ACCPHY