Speaker
Description
The University of Melbourne’s X-band Laboratory for Accelerators and Beams (X-LAB) hosts half of CERN’s high-gradient X-band (11.994 GHz) RF test stand, now known as Mel-BOX, and is currently developing a new X-band electron linear accelerator facility. Mel-BOX will be at the heart of the facility, providing high-power, high-repetition-rate RF to a TD24 accelerating structure. The electron beam will be generated by an injector system consisting of a 100 keV DC photogun, a pulsed UV laser, an S-band (2.9985 GHz) buncher, and several solenoids and coils. Downstream of the injector, the beamline will include a series of quadrupoles for beam transport and focusing, followed by a spectrometer used to measure the final beam energy before the beam enters the experimental endstation. The endstation is a vacuum chamber designed to accommodate a range of experimental configurations. While Mel-BOX continues to test X-band structures, significant progress has been made on the injector system. In this work, we present the integration and characterisation of key injector components. This includes measurements of a test laser using a camera and photodiode, RF characterisation of the buncher using a vector network analyser (VNA), and initial electron beam measurements using a Faraday cup and a phospor screen. We also describe the optimisation of the collimation and focusing solenoids to obtain workable emittance and beam size. Finally, measurements of vacuum conditions, dark current, and leakage radiation during conditioning are also reported.
Funding Agency
Melbourne Research Scholarship
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