A COLD Vacuum Chamber for Beam Heat Load DIAGnostics (COLDDIAG)

The heat intake from the beam which is crucial for the cryogenic design of superconducting insertion devices is still not understood. A cryostat built by Babcock Noell GmbH was equipped with instrumentation and installed at the Diamond Light Source to investigate the beam heat load and the underlying mechanisms. The values measured under different conditions are much higher and show a different dependency than expected. This indicates that more experimental as well as theoretical work is needed.