STELLA experiment: Hardware issues

The STaged ELectron Laser Acceleration (STELLA) experiment is currently being assembled and tested at the BNL Accelerator Test Facility (ATF). The existing BNL inverse free electron laser (IFEL) has been positioned upstream of the inverse Cerenkov acceleration (ICA) experiment on Beamline #1. This beamline also features new quadrupoles and a new spectrometer capable of a +/−20% energy acceptance. A new laser beam transport system has been installed to permit accurate control of the laser phase for the laser beams sent to the IFEL and ICA devices. Detection of the microbunches will be performed using a coherent transition radiation (CTR) diagnostic similar to one already demonstrated at the ATF.