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Time-resolved momentum and beam size diagnostics for bunch trains with very large momentum spread
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy. Uppsala Univ, Dept Phys & Astron, S-75120 Uppsala, Sweden..
CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland..
CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
2015 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 797, 234-246 p.Article in journal (Refereed) Published
Abstract [en]

We propose a novel method to measure he Lime -resolved momentum dislribulion and size of beams with very large momentum spread. To demonstrate the principle we apply the method to the beam at the end of a Compact Linear Collider decelerator, where conventional diagnostic methods are hampered by the large energy spread of the drive beam after up to 90% of its kinetic energy is converted into microwave power. Our method is based on sweeping the beam in a circular pattern to determine the momentum distribution and recording the beam size on a screen using optical transition radiation. We present an algorithm to extract the time-resolved momentum distribution. Furthermore, the beam size along the bunch train can be extracted from the image left On a screen by sweeping the beam linearly. We introduce he analysis technique and show simulation results that allow us to estimate the applicability, in addition, we present a conceptual design of the technical realization.

Place, publisher, year, edition, pages
2015. Vol. 797, 234-246 p.
Keyword [en]
Beam size measurement, Energy measurement, Spectrometry, CLIC, Electron decelerator, Time-resolved diagnostics
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-262942DOI: 10.1016/j.nima.2015.06.063ISI: 000360192400034OAI: oai:DiVA.org:uu-262942DiVA: diva2:858449
Available from: 2015-10-02 Created: 2015-09-23 Last updated: 2017-12-01Bibliographically approved

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Olvegard, MajaZiemann, Volker

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