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First machine development results with HL-LHC crab cavities in the SPS
/ Carver, Lee (U. Liverpool (main)) ; Alekou, Androula (U. Manchester (main)) ; Antoniou, Fanouria (CERN) ; Appleby, Robert (U. Manchester (main)) ; Bartosik, Hannes (CERN) ; Bohl, Thomas (CERN) ; Burt, Graeme (Lancaster U. (main)) ; Calaga, Rama (CERN) ; Carlà, Michele (CERN) ; Levens, Thomas (CERN) et al.
Crab cavities are a critical component within the High Luminosity upgrade project for the Large Hadron Collider (HL-LHC). It is foreseen to use crab cavities in order to compensate the geometric luminosity reduction factor (reduction of the luminous region at the Interaction Point [IP]) due to the beam crossing angle (required for minimizing the impact of the long range beam-beam effects on the single particle beam dynamics) and increase the number of collisions per bunch crossing. [...]
CERN-ACC-2019-148.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-MOPGW094
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPGW094
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SPS Studies in Preparation for the Crab Cavity Experiment
/ Alekou, Androula (CERN ; U. Manchester (main) ; CERN) ; Antoniou, Fanouria (CERN ; CERN) ; Appleby, Robert (U. Manchester (main) ; U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Arduini, Gianluigi (CERN ; CERN) ; Bartosik, Hannes (CERN ; CERN) ; Calaga, Rama (CERN ; CERN) ; Papaphilippou, Yannis (CERN ; CERN ; CERN) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.)
A local Crab Cavity (CC) scheme will recover head-on collisions at the Interaction Points (IPs) of the High Luminosity LHC (HL-LHC), which aims to increase the LHC luminosity by a factor of 3-10. The first time that CC will ever be tested with proton beams will be in 2018 in the SPS machine. [...]
CERN-ACC-2017-203.-
2017 - 3 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPVA034
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPVA034
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Emittance Growth in Coast in the SPS at CERN
/ Antoniou, Fanouria (CERN ; U. Liverpool (main)) ; Alekou, Androula (U. Manchester (main) ; CERN) ; Bartosik, Hannes (CERN) ; Bohl, Thomas (CERN) ; Calaga, Rama (CERN) ; Carver, Lee (CERN ; U. Manchester (main)) ; Repond, Joël (CERN) ; Vandoni, Giovanna (CERN)
The HL-LHC prototype crab-cavities are installed in the CERN SPS, which, for the first time, will allow for a comprehensive beam test with high energy protons. As the time available for experimental beam dynamics studies with the crab cavities installed in the machine will be limited, a very good preparation is required. [...]
CERN-ACC-2018-110.-
2018 - 7 p.
- Published in : (2018) , pp. MOPMF061
- Published in : J. Phys.: Conf. Ser. 1067 (2018) 022008
Fulltext: mopmf061_2 - PDF; mopmf061 - PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF061
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Beam dynamics simulations with Crab Cavities in the SPS machine
/ Alekou, Androula (CERN ; U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Appleby, Robert (U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Bartosik, Hannes (CERN) ; Carlà, Michele (CERN) ; Papaphilippou, Yannis (CERN)
The LHC Upgrade, called High Luminosity LHC, aims to increase the integrated luminosity by a factor of 10. To achieve this, the project relies on a number of key innovative technologies, including the use of superconducting Crab Cavities with ultra-precise phase control for beam rotation. [...]
CERN-ACC-2019-147.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-MOPGW095
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPGW095
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Deliverable 2.10: Summary of the observations in the SPS and update of the estimates for HL-LHC
/ Alekou, Androula (University of Manchester (GB)) ; Antoniou, Fanouria (CERN) ; Appleby, Robert Barrie (University of Manchester (GB)) ; Bartosik, Hannes (CERN) ; Calaga, Rama (CERN) ; Carla', Michele (CERN) ; Carver, Lee Robert (University of Liverpool (GB)) ; Papaphilippou, Yannis (CERN) ; Welsch, Carsten Peter (University of Liverpool (GB))
Over the course of 2018, 7 machine developments were conducted for dedicated crab cavity measurements with each measurement slot consisting of 10 hours of SPS machine time. [...]
CERN-ACC-2020-0002.
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2020. - 22 p.
Full text
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SPS Long Term Stability Studies in the Presence of Crab Cavities and High Order Multipoles
/ Alekou, Androula (CERN ; U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Appleby, Robert (U. Manchester (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Bartosik, Hannes (CERN) ; Calaga, Rama (CERN) ; Carlà, Michele (CERN) ; Papaphilippou, Yannis (CERN)
A local Crab Cavity (CC) scheme will recover the head-on collisions at the IP of the High Luminosity LHC (HL-LHC), which aims to increase the LHC luminosity by a factor of 3-10. The tight space constraints at the CC location result in axially non-symmetric cavity designs that introduce high order multipole CC components. [...]
2018 - 3 p.
- Published in : 10.18429/JACoW-HB2018-WEP2PO008
Fulltext: PDF;
In : 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, Daejeon, Korea, 17 - 22 Jun 2018, pp.WEP2PO008
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Investigation of Damping Effects of the Crab Cavity Noise Induced Emittance Growth
/ Triantafyllou, Natalia (Liverpool U. ; CERN) ; Antoniou, Fanouria (CERN) ; Bartosik, Hannes (CERN) ; Baudrenghien, Philippe (CERN) ; Buffat, Xavier (CERN) ; Calaga, Rama (CERN) ; Carver, Lee R (Liverpool U. ; ESRF, Grenoble) ; Mastoridis, Themis (Cal. Poly.) ; Papaphilippou, Yannis (CERN) ; Wolski, Andrzej (Liverpool U.)
Crab cavities will be installed at the two main interaction points (IP1 and IP5) of the High Luminosity LHC (HL-LHC) in order to minimize the geometric reduction of the luminosity due to the crossing angle. Two prototype crab cavities have been installed into the SPS machine and were tested with a proton beam in 2018, to study the expected emittance growth induced by RF noise. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 2054-2057
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2054-2057
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Machine protection experience from beam tests with crab cavity prototypes in the CERN SPS
/ Lindstrom, Bjorn (CERN ; Uppsala U. (main)) ; Bartosik, Hannes (CERN) ; Bohl, Thomas (CERN) ; Butterworth, Andrew (CERN) ; Calaga, Rama (CERN) ; Carver, Lee (CERN ; U. Liverpool (main)) ; Kain, Verena (CERN) ; Levens, Thomas (CERN) ; Papotti, Giulia (CERN) ; Secondo, Raffaello (CERN) et al.
Crab cavities (CCs) constitute a key component of the High Luminosity LHC (HL-LHC) project. In case of a failure, they can induce significant transverse beam offsets within tens of microseconds, necessitating a fast removal of the circulating beam to avoid damage to accelerator components due to losses from the displaced beam halo. [...]
CERN-ACC-2019-158.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-MOPMP036
Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPMP036
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First RF Performance Results for the DQW Crab Cavities to be Tested in the CERN SPS
/ Castilla, Alejandro (CERN) ; Ben-Zvi, Ilan (Brookhaven Natl. Lab.) ; Burt, Graeme (Lancaster U.) ; Calaga, Rama (CERN) ; Capatina, Ofelia (CERN) ; Dr Schirm, Karl-Martin (CERN) ; Hernández-Chahín, Karim (CERN ; Mexico, ININ) ; Macpherson, Alick (CERN) ; Mitchell, James (Lancaster U.) ; Shipman, Nicholas (Lancaster U. ; U. Manchester (main) ; CERN) et al.
As part of the High Luminosity LHC (HL-LHC) project strategy, crab cavity correctors shall be installed around CMS and ATLAS experiments of the LHC. To accommodate the different crossing angle planes, two distinct cavity designs have been selected: the RF Dipole (RFD) and the Double Quarter Wave resonator (DQW). [...]
CERN-ACC-2017-283.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-MOPVA095
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.MOPVA095
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