Beam from the linac is next injected into the particle accumulator ring (PAR), which compresses the long pulse of 10-15-nanosecond electrons down to less than 1 nanosecond, and cleans the electron bunch to ensure that stray electrons are driven outside the bunch. The beam is then extracted and delivered to the booster synchrotron.
![The particle accumulator ring, shown linearly to include all components. The particle accumulator ring, shown linearly to include all components.](/files/APS-Uploads/17_1_4_PAR_Panorama2_reduced_REV2.jpg)
The particle accumulator ring, shown linearly to include all components.