Beam profile monitoring at the test beam line at the Compact Linear Collider test facility
2013 (English)In: Physical Review Special Topics. Accelerators and Beams, ISSN 1098-4402, Vol. 16, no 8, 082802- p.Article in journal (Refereed) Published
The Compact Linear Collider, CLIC is a study for a future linear electron-positron collider based on a two-beam acceleration scheme in which a high intensity drive beam is decelerated in order to provide the power to accelerate the main beam for collision in the TeV range. The power extracted from the drive beam deteriorates the beam quality and increases the energy spread significantly. Monitoring of the beam properties is therefore challenging but essential. These challenges are being addressed experimentally at the CLIC Test Facility where up to 55% of the power is extracted from the beam in the test beam line, TBL, a small-scale version of the CLIC drive beam decelerator, leaving the beam with a very wide energy profile. For monitoring of the transverse beam profile and Twiss parameters we use Optical Transition Radiation screens and quadrupole scans. The intra-pulse train energy spectrum before and after deceleration is measured with segmented beam dumps. In this report we discuss the performance of these diagnostic devices with a particular emphasis on the large energy spread and its effect on the beam imaging techniques, and with a final outlook to the CLIC drive beam diagnostics.
Place, publisher, year, edition, pages
2013. Vol. 16, no 8, 082802- p.
CLIC Test Facility, electron decelerator, optical transition radiation, quadrupole scan, segmented beam dump
Accelerator Physics and Instrumentation
IdentifiersURN: urn:nbn:se:uu:diva-197570DOI: 10.1103/PhysRevSTAB.16.082802ISI: 000323611000002OAI: oai:DiVA.org:uu-197570DiVA: diva2:614959