Speaker
Description
The beam gas curtain (BGC) monitor has been successfully commissioned in the LHC and was cleared for continuous operation recently. The BGC monitor is useful to measure beam profiles non-invasively for high-intensity beams. Previously, it was also installed in the electron beam test stand to monitor the hollow electron beam. However, the BGC monitor originally designed for the LHC was not optimized to cover the whole electron beam used in the EBTS under various magnet settings, which required a gas curtain with a length of 60 mm. This problem has been tackled in a new monitor design, which has been built and tested at the Cockcroft Institute. In this contribution, the simulation and optimization framework for the gas curtain design will be discussed. Moreover, by using a movable gauge and fluorescence detection methods, the gas curtain density and distribution are measured to validate these design parameters.
Funding Agency
This work was supported by the High Luminosity LHC project and STFC through HLLHC UK phase II project No. ST/T001925/1, and the Cockcroft core grant No. ST/G008248/1.
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