The APS beam transfer line from linac to booster synchrotron

摘要

In this note, the authors describe the recently designed APS beam transport system to the booster synchrotron. Another transfer system which guides the beam from the booster to the storage ring is described and therefore it will not be treated here. The system of interest consists of two parts; the transfer line LTOA from the injector linac to the positron accumulator ring (PAR) and the transfer line ATOB from the accumulator ring to booster synchrotron. For the design, they assumed that the rms transverse emittance of the linac output beam is about 1.1 mm mrad at 450 MeV and the energy spread is {+-} 1%. The plan view of the designed beam transfer line is given.