27-10-2012, 12:01 PM
Upgrading the Linac 400 MeV Switchyard
ABSTRACT
This note describes changes in the 400 MeV beam transfer system from the Linac to improve the quality of the beam
delivered to the Booster and to add the capability to direct beam to the MuCool Test Area (MTA). The new configuration has
two pairs of pulsed dipole magnets on each side of the 400 MeV electrostatic Chopper. The smaller pair deflects vertically
to replace the kick of the Chopper to send the beam to the Booster while the larger pair deflects horizontally to transfer the
beam to the MTA. In this new scheme, the Chopper is uncharged while the beam is injected into the Booster such that the
injection position does not rely on Chopper power supply regulation as it does now. A feature of the proposed upgrade is that
no changes in the lattice functions are required in the lines to the Booster or to the Dump; once the four new magnets are
installed, the switch between the old and new operating modes can be done from upstairs. The transfer to the MTA is already
described in a previous note.
ABSTRACT
This note describes changes in the 400 MeV beam transfer system from the Linac to improve the quality of the beam
delivered to the Booster and to add the capability to direct beam to the MuCool Test Area (MTA). The new configuration has
two pairs of pulsed dipole magnets on each side of the 400 MeV electrostatic Chopper. The smaller pair deflects vertically
to replace the kick of the Chopper to send the beam to the Booster while the larger pair deflects horizontally to transfer the
beam to the MTA. In this new scheme, the Chopper is uncharged while the beam is injected into the Booster such that the
injection position does not rely on Chopper power supply regulation as it does now. A feature of the proposed upgrade is that
no changes in the lattice functions are required in the lines to the Booster or to the Dump; once the four new magnets are
installed, the switch between the old and new operating modes can be done from upstairs. The transfer to the MTA is already
described in a previous note.