In vacuum diamond sensor scanner for beam halo measurements in the beam line at the KEK Accelerator Test Facility

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2016-10, Vol.832, p.231-242
• Main Authors: Liu, S., Bogard, F., Cornebise, P., Faus-Golfe, A., Fuster-Martínez, N., Griesmayer, E., Guler, H., Kubytskyi, V., Sylvia, C., Tauchi, T., Terunuma, N., Bambade, P.
• Format: Article
• Language: English
• Subjects: Accelerator Physics; ATF2; Beam halo; Diamond sensor; Instrumentation and Detectors; Physics
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2016.06.122

The investigation of beam halo transverse distributions is important for the understanding of beam losses and the control of backgrounds in Future Linear Colliders (FLC). A novel in vacuum diamond sensor (DSv) scanner with four strips has been designed and developed for the investigation of the beam halo transverse distributions and also for the diagnostics of Compton recoil electrons after the interaction point (IP) of ATF2, a low energy (1.3GeV) prototype of the final focus system for the ILC and CLIC linear collider projects. Using the DSv, a dynamic range of ∼106 has been successfully demonstrated and confirmed for the first time in simultaneous beam core (∼109 electrons) and beam halo (∼103 electrons) measurements at ATF2. This report presents the characterization, performance studies and tests of diamond sensors using an α source, as well as using the electron beams at PHIL, a low energy