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Dark current analysis at CERN’s X-band facility
/ Banon Caballero, David (Valencia U., IFIC ; CERN) ; Boronat, Marça (Valencia U., IFIC ; CERN) ; Catalán Lasheras, Nuria (CERN) ; Faus-Golfe, Angeles (Orsay, LAL) ; Gimeno, Benito (Valencia U., IFIC) ; Lucas, Thomas (Melbourne U. ; CERN) ; Millar, William (Lancaster U. ; CERN) ; Paszkiewicz, Jan (U. Oxford (main) ; CERN) ; Pitman, Sam (CERN) ; Sánchez, Victoria (Valencia U., IFIC ; CERN) et al.
Dark current is particularly relevant during operation in high-gradient linear accelerators. Resulting from the capture of field emitted electrons, dark current produces additional radiation that needs to be accounted for in experiments. [...]
CERN-ACC-2019-212; CERN-ACC-2019-270; CLIC-Note-1190.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPRB059
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPRB059
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High Power Tests of a Prototype X-Band Accelerating Structure for CLIC
/ Zennaro, Riccardo (PSI, Villigen) ; Argyropoulos, Theodoros (Valencia U., IFIC) ; Blumer, Heinrich (PSI, Villigen) ; Bopp, Markus (PSI, Villigen) ; Catalán Lasheras, Nuria (CERN) ; Esperante Pereira, Daniel (Valencia U., IFIC) ; Garvey, Terence (PSI, Villigen) ; Grudiev, Alexej (CERN) ; Lucas, Thomas (Melbourne U.) ; McMonagle, Gerard (CERN) et al.
We present the design, construction and high-power test of an X-band radio-frequency accelerating structure, built as a prototype for the CERN LInear Collider (CLIC) study. X-band structures have been attracting increasing attention in recent years with applications foreseen in the domains of compact free electron lasers, medical accelerators and as diagnostics for ultra-short (femtosecond) electron bunches (when used in deflecting mode). [...]
CERN-ACC-2017-179; CLIC-Note-1134.-
2017 - 3 p.
- Published in : 10.18429/JACoW-IPAC2017-THPIK097
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.THPIK097
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Initial Testing of Techniques for Large Scale Rf Conditioning for the Compact Linear Collider
/ Lucas, Thomas (Melbourne U. ; CERN) ; Boland, Mark (Saskatchewan U., CLS) ; Catalán Lasheras, Nuria (CERN) ; Giansiracusa, Paul (Melbourne U.) ; Grudiev, Alexej (CERN) ; Lefèvre, Thibaut (CERN) ; McMonagle, Gerard (CERN) ; Paszkiewicz, Jan (Oxford U. ; CERN) ; Rassool, Roger (Melbourne U.) ; Serpico, Claudio (Sincrotrone Trieste) et al.
Nominal operating conditions for the Compact Linear Collider (CLIC) 380 GeV requires 72 MV/m loaded accelerating gradients for a 180 ns flat-top pulse. Achieving this requires extensive RF conditioning which past tests have demonstrated can take several months per structure, when conditioned at the nominal repetition rate of 50 Hz. [...]
CERN-ACC-2018-137; CLIC-Note-1144.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPMK103
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPMK103
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High Power and High Repetition Rate X-band Power Source Using Multiple Klystrons
/ Volpi, Matteo (Melbourne U. ; CERN) ; Boland, Mark (Saskatchewan U., CLS) ; Catalán Lasheras, Nuria (CERN) ; Giansiracusa, Paul (Melbourne U.) ; Grudiev, Alexej (CERN) ; Lucas, Thomas (Melbourne U. ; CERN) ; McMonagle, Gerard (CERN) ; Paszkiewicz, Jan (Oxford U. ; CERN) ; Rassool, Roger (Melbourne U.) ; Serpico, Claudio (Sincrotrone Trieste) et al.
In July 2016, the first X-band test facility operating with two interwoven, 6 MW klystron pulses was commissioned at CERN. Outputting up to 46 MW after pulse compression, the new test stand allows testing of two structures concurrently with repetition rates up to 400 Hz in each line. [...]
CERN-ACC-2018-138.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPMK104
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPMK104
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Fabrication and high-gradient testing of an accelerating structure made from milled halves
/ Wuensch, Walter (CERN) ; Argyropoulos, Theodoros (CERN ; Valencia U., IFIC) ; Bowden, Gordon (SLAC) ; Catalán Lasheras, Nuria (CERN) ; Dolgashev, Valery (SLAC) ; Esperante Pereira, Daniel (Valencia U., IFIC ; CERN) ; Giansiracusa, Paul (Melbourne U.) ; Giner Navarro, Jorge (CERN ; Valencia U., IFIC) ; Grudiev, Alexej (CERN) ; Haase, Andrew (SLAC) et al.
Accelerating structures made from parts which follow symmetry planes offer many potential advantages over traditional disk-based structures: more options for joining (from bonding to welding), following this more options for material state (heat treated or not) and potentially lower cost since structures can be made from fewer parts. An X-band structure made from milled halves, and with a standard benchmarked CLIC test structure design has been fabricated and high-gradient tested above 95 MV/m..
CERN-ACC-2017-346.-
2017 - 4 p.
- Published in : 10.18429/JACoW-LINAC2016-THPLR003
Fulltext: PDF;
In : 28th Linear Accelerator Conference, East Lansing, Michigan, 25 - 30 Sep 2016, pp.THPLR003
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SLAC/CERN high gradient tests on an X-band accelerating section
/ Wang, J W (SLAC) ; Loew, G A (SLAC) ; Loewen, R J (SLAC) ; Ruth, Ronald D (SLAC) ; Vlieks, A E (SLAC) ; Wilson, Ian H (CERN) ; Wuensch, Walter (CERN)
High frequency linear collider schemes envisage the use of rather high accelerating gradients: 50 to 100 MV/m for X-band and 80 MV/m for CLIC. Because these gradients are well above those commonly used in accelerators, high gradient studies of high frequency structures have been initiated and test facilities have been constructed at KEK [1], SLAC [2] and CERN [3]. [...]
CERN-SL-95-27-RF; CLIC-Note-283.-
Geneva : CERN, 1996 - 4 p.
Report
Fulltext: PDF; External link: Published version from JACoW
In : 16th Biennial Particle Accelerator Conference and International Conference on High-Energy Accelerators, Dallas, TX, USA, 1 - 5 May 1995, pp.653-655
- Please contact the library if you need to access this document.
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Spatially resolved dark current in high gradient traveling wave structures
/ Paszkiewicz, Jan (CERN ; JAI, UK ; Oxford U.) ; Burrows, Philip (JAI, UK ; Oxford U. ; CERN) ; Wuensch, Walter (CERN)
High-gradient accelerating structures are known to produce field-emitted current from regions of high surface field, which are captured and accelerated by the fields within the structure. This current is routinely measured in structures under test in the CLIC (Compact Linear Collider) high-gradient test stands using Faraday cups. [...]
CERN-ACC-2019-211; CLIC-Note-1191.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPRB062
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPRB062
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High Power Conditioning of X-Band RF Components
/ Catalán Lasheras, Nuria (CERN) ; Damerau, Heiko (CERN) ; Gerard, Romain Louis (CERN) ; Grudiev, Alexej (CERN) ; Lucas, Thomas (Melbourne U.) ; McMonagle, Gerard (CERN) ; Paszkiewicz, Jan (CERN) ; Pitman, Sam (Lancaster U.) ; Solodko, Anastasiya (CERN) ; Syratchev, Igor (CERN) et al.
As part of the effort to qualify CLIC accelerating struc-tures prototypes, new X-band test facilities have been built and commissioned at CERN in the last years. In this context, a number of RF components have been designed and manufactured aiming at stable operation above 50 MW peak power and several kW of average power. [...]
CERN-ACC-2018-156; CLIC-Note-1149.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-WEPMF074
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF074
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