Speaker
Description
CLARA is an ultrabright electron beam test facility at STFC Daresbury Laboratory, providing high-quality electron bunches with charges up to 250 pC. CLARA has recently resumed operations after a major upgrade, and is currently undergoing beam commissioning at its nominal momentum (250 MeV/c) and repetition rate (100 Hz). Accurate measurements of the transverse beam optics will be essential for routine accelerator operations, and for optimising the machine’s performance. During CLARA commissioning, a variety of techniques will be used to characterise the transverse optics, ranging from simple quadrupole scans to four-dimensional phase space tomography. In this contribution, we describe the development of high-level software for measuring and matching the beam optics at multiple locations along the CLARA lattice. This application has been developed as part of a wider, modular CLARA software environment, and tested extensively using a virtual control system with hardware simulation. We present preliminary emittance measurements at key locations along CLARA, using data from the early stages of beam commissioning.
