Epochal injection system using a pulsed quadrupole magnet at the PF-AR

We developed epochal injection system using single pulsed quadrupole magnet (PQM) without any dipole kicker magnets for the PF-AR (Photon Factory Advanced Ring). The system enables us to inject the beam without a local bump of a stored beam that is inevitable for the usual injection system. The PQM has a length of 30 cm and a field gradient of about 3T/m at a peak current of 2000A. Using the PQM, the amplitude of the oscillation of the injected beam is reduced to about a half of that only with septum magnets. The reduced amplitude is almost the same as that with the usual injection system. In this proceeding, we show the overview of the parameters of the system and the results of the magnetic field measurements and the machine study. (author)