CERN Accelerating science

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1.
Linearity and Response Time of the LHC Diamond Beam Loss Monitors in the CLEAR Beam Test Facility at CERN / Morales Vigo, Sara (CERN ; Cockcroft Inst. Accel. Sci. Tech.) ; Calvo Giraldo, Eva (CERN) ; Dyks, Luke (CERN) ; Effinger, Ewald (CERN) ; Farabolini, Wilfrid (CERN) ; Korysko, Pierre (CERN) ; Lernevall, Anders (CERN) ; Salvachúa, Belen (CERN) ; Welsch, Carsten (Cockcroft Inst. Accel. Sci. Tech.) ; Wolfenden, Joseph (Cockcroft Inst. Accel. Sci. Tech.) et al.
Chemical Vapour Deposition (CVD) diamond detectors have been tested during the Run 2 operation period (2015-2018) as fast beam loss monitors for the Beam Loss Monitoring (BLM) system of the Large Hadron Collider (LHC) at CERN. However, the lack of raw data recorded during this operation period restrains our ability to perform a deep analysis of their signals. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 355-358 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.355-358
2.
Beam Loss Localisation with an Optical Beam Loss Monitor in the CLEAR Facility at CERN / Benítez Berrocal, Sara (CERN) ; Chen, Minsi (Huddersfield U.) ; Effinger, Ewald (CERN) ; Esteban Felipe, Jose (CERN) ; Farabolini, Wilfrid (IRFU, Saclay ; CERN) ; Korysko, Pierre (CERN ; Oxford U.) ; Lernevall, Anders (CERN) ; Salvachúa, Belen (CERN)
A prototype of a Beam Loss Monitor based on the detection of Cherenkov light in optical fibres is being developed to measure beam losses in the CERN Super Proton Synchrotron. Several testing campaigns have been planned to benchmark the simulations of the system and test the electronics in the CLEAR facility at CERN. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 351-354 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.351-354
3.
Beam Loss Signal Calibration for the LHC Diamond Detectors During Run 2 / Morales Vigo, Sara (CERN ; Liverpool U.) ; Calvo Giraldo, Eva (CERN) ; Effinger, Ewald (CERN) ; Salvachua, Belen (CERN) ; Welsch, Carsten P (Liverpool U.) ; Wolfenden, Joseph (Liverpool U.) ; Zamantzas, Christos (CERN)
Chemical Vapour Deposition (CVD) diamond detectors can be used as fast beam loss monitors in particle accelerators. In the Large Hadron Collider (LHC) at CERN, they are installed in the betatron collimation region, a high-radiation environment. [...]
JACoW, 2021 - 4 p. - Published in : JACoW IBIC 2021 (2021) 290-293 Fulltext: PDF;
In : 10th International Beam Instrumentation Conference (IBIC 2021), Online, Korea, 13 - 17 Sep 2021, pp.290-293
4.
Testing the Properties of Beam-Dose Monitors for VHEE-FLASH Radiation Therapy / Bateman, Joseph (JAI, UK) ; Burrows, Philip (JAI, UK) ; Corsini, Roberto (CERN) ; Dosanjh, Manjit (CERN) ; Dyks, Luke (JAI, UK) ; Farabolini, Wilfrid (CERN) ; Gerbershagen, Alexander (CERN) ; Heracleous, Natalie (CERN) ; Korysko, Pierre (CERN) ; Morales Vigo, Sara (CERN) et al.
Very High Energy Electrons (VHEE) of 50 - 250 MeV are an attractive choice for FLASH radiation therapy (RT). Before VHEE-FLASH RT can be considered for clinical use, a reliable dosimetric and beam monitoring system needs to be developed, able to measure the dose delivered to the patient in real-time and cut off the beam in the event of a machine fault to prevent overdosing the patient. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 3018-3021 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.3018-3021
5.
Calibration of the LHC Diamond beam loss monitors for LHC Run 3 / Morales Vigo, Sara (CERN ; Cockcroft Inst. Accel. Sci. Tech.) ; Salvachua, Belen (CERN) ; Welsch, Carsten (Cockcroft Inst. Accel. Sci. Tech.) ; Zamantzas, Christos (CERN) ; Calvo Giraldo, Eva (CERN) ; Martinez Samblas, Javier (CERN) ; Wolfenden, Joseph (Cockcroft Inst. Accel. Sci. Tech.) ; Gonzalez-Berges, Manuel (CERN)
A set of twelve Polycrystalline Chemical Vapour Deposition (pCVD) diamond detectors are installed in the beam injection, extraction and betatron collimation areas of the Large Hadron Collider (LHC) as fast beam loss monitoring detectors. Their high-radiation tolerance and time resolution in the order of a few ns makes them an ideal candidate to monitor bunch-by-bunch losses in the LHC beams, which have a nominal bunch separation of 25 ns. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) THPL085 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPL085
6.
Detector Response Studies of the ESS Ionization Chamber / Dolenc Kittelmann, Irena (ESS, Lund) ; Boutachkov, Plamen (Darmstadt, GSI) ; Effinger, Ewald (CERN) ; Grishin, Viatcheslav ; Lernevall, Anders ; Viganò, William ; Zamantzas, Christos
The European Spallation Source (ESS), currently under construction in Lund, Sweden, will be a pulsed neutron source based on a proton linac. The ESS linac is designed to deliver a 2GeV beam with peak current of 62.5mA at 14 Hz to a rotating tungsten target for neutron production. [...]
2023 - 4 p. - Published in : JACoW IBIC 2023 (2023) TUP004 Fulltext: PDF;
In : 12th International Beam Instrumentation Conference (IBIC 2023), Saskatoon, Canada, 10 - 14 Sep 2023, pp.TUP004
7.
Development and Testing of a Cherenkov Beam Loss Monitor in CLEAR Facility / Benitez Berrocal, Sara (CERN ; Huddersfield U.) ; Effinger, Ewald (CERN ; Saclay) ; Farabolini, Wilfrid (CERN ; Saclay) ; Gilardi, Antonio (CERN ; Naples U. ; INFN, Naples) ; Korysko, Pierre (CERN ; Oxford U.) ; Lane, Phil (CERN ; Huddersfield U.) ; Lima, Erika (CERN) ; Salvachua, Belen (CERN) ; Viganò, William (CERN)
Beam Loss Monitors are fundamental diagnostic systems in particle accelerators. Beam losses are measured by a wide range of detectors with excellent results; most of these devices are used to measure local beam losses. [...]
2021 - 4 p. - Published in : 10.18429/JACoW-IPAC2021-WEPAB021 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.WEPAB021
8.
The Diamond Beam Loss Monitoring System at CERN LHC and SPS / Calvo Giraldo, Eva (CERN) ; Effinger, Ewald (CERN) ; Gonzalez Berges, Manuel (CERN) ; Kral, Jiri (Prague, Tech. U.) ; Martínez Samblas, Javier (CERN) ; Morales Vigo, Sara (CERN) ; Salvachúa, Belen (CERN) ; Zamantzas, Christos (CERN)
The Large Hadron Collider (LHC) and the Super Proton Synchrotron (SPS) accelerators are equipped with 17 pCVD diamond based Beam Loss detectors at strategical locations where their nanosecond resolution can provide insights into the loss mechanisms and complement the information of the standard ionization chamber type detectors. They are used at the injection and extraction lines of the LHC and SPS, to analyse the injection or extraction efficiency, and to verify the timing alignment of other elements like kicker magnets. [...]
2022 - 5 p. - Published in : JACoW IBIC 2022 (2022) 202-206 Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.202-206
9.
Position Resolution of Optical Fibre-Based Beam Loss Monitors Using Long Electron Pulses / Nebot Del Busto, Eduardo (CERN ; Liverpool U.) ; Boland, Mark (Australia, CSIRO, Clayton ; Melbourne U.) ; Döbert, Steffen (CERN) ; Domingues Sousa, Fernando (CERN) ; Effinger, Ewald (CERN) ; Farabolini, Wilfrid (CEA, DSM, Saclay ; IRFU, Saclay ; CERN) ; Holzer, Eva Barbara (CERN) ; Kastriotou, Maria (Cockcroft Inst. Accel. Sci. Tech. ; CERN ; Liverpool U.) ; Rassool, Roger (Melbourne U.) ; Viganò, William (CERN) et al.
Beam loss monitoring systems based on optical fibres (oBLM), have been under consideration for future colliders for several years. To distinguish losses between consecutive quadrupoles, a position resolution of less than 1 m is required. [...]
2016 - 5 p. - Published in : 10.18429/JACoW-IBIC2015-WEBLA03 Fulltext: PDF;
In : International Beam Instrumentation Conference , Melbourne, Australia, 13 - 17 Sep 2015, pp.WEBLA03
10.
Optical Beam Loss Monitor for RF Cavity Characterisation / Alexandrova, Alexandra (Cockcroft Inst. Accel. Sci. Tech.) ; Brynes, Alexander (Daresbury) ; Devlin, Lee (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Effinger, Ewald (CERN) ; Holzer, Eva Barbara (CERN) ; Jackson, Frank (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Kastriotou, Maria (U. Liverpool (main) ; CERN) ; Scott, Duncan (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; Tzoganis, Vasilis (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) et al.
Beam Loss Monitors (BLMs) based on optical fibres have been under development for many years as an alternative solution to commonly used methods, such as ionisation chambers. Optical BLMs (oBLMs) maintain standard BLM functionality but can also be used for machine and personal protection. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IBIC2017-WEPWC01 Fulltext: PDF;
In : 6th International Beam Instrumentation Conference, Grand Rapids, MI, USA, 20 -24 Aug 2017, pp.WEPWC01

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