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Instrumentation for the 12 GHz Stand-alone Test-stand to Test  CLIC Acceleration Structures
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy. (Accelerator Physics)
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
2011 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Vacuum breakdown is one of the primary limitations inthe design and construction of high energy accelerators operating with warm accelerating structures (ACS) such asthe CLIC linear collider because the mechanisms that causethe breakdown are still a mystery. The ongoing experimental work is trying to benchmark the theoretical models focusing on the physics of vacuum breakdown which is responsible for the observed discharges. The CLIC collaboration is preparing a dedicated 12 GHz test-stand to validate feasibility of different models of accelerating structures and observe the characteristics of the RF dischargesand their eroding effects on the ACS. The instrumentationfor the test-stand must be versatile and allow for the conditioning of the ACS with measurements of the breakdownrates at different power levels as well as detection of thedark current and light emission directly relevant to breakdown physics. For that purpose we are developing 2 instruments. A pepper-pot chamber with an external magnetic spectrometer for measurement of the spatial and energy distributions of the electrons emitted from the ACSand an optical laser system for probing the ACS to observethe effect of a discharge on the transmitted light

Place, publisher, year, edition, pages
2011.
National Category
Accelerator Physics and Instrumentation
Identifiers
URN: urn:nbn:se:uu:diva-170209OAI: oai:DiVA.org:uu-170209DiVA: diva2:508606
Conference
IPAC2011, San Sebastián, Spain
Available from: 2012-03-09 Created: 2012-03-09 Last updated: 2012-03-09

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http://accelconf.web.cern.ch/AccelConf/IPAC2011/papers/tupc133.pdf
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