Emittance Correction in the 2006 ILC Bunch Compressor

[摘要] 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.

[发布日期] 2007-03-05

[学科分类] 核物理和高能物理

[关键词] BEAM EMITTANCE;CORRECTIONS;BEAM BUNCHING;LINEAR COLLIDERS;BEAM MONITORS;BEAM POSITION;ALIGNMENT;QUADRUPOLES Accelerators;ACCPHY