1.
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A Versatile Beam Loss Monitoring System for CLIC
/ Kastriotou, Maria (CERN ; Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Döbert, Steffen (CERN) ; Farabolini, Wilfrid (CERN) ; Holzer, Eva Barbara (CERN) ; Nebot Del Busto, Eduardo (CERN ; Liverpool U.) ; Tecker, Frank (CERN) ; Welsch, Carsten (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.)
The design of a potential CLIC beam loss monitoring (BLM) system presents multiple challenges. To successfully cover the 48 km of beamline, ionisation chambers and optical fibre BLMs are under investigation. [...]
CERN-ACC-2016-315; CLIC-Note-1087.-
2016 - 4 p.
- Published in : 10.18429/JACoW-IPAC2016-MOPMR024
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.MOPMR024
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2.
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RF Cavity Induced Sensitivity Limitations on Beam Loss Monitors
/ Kastriotou, M (CERN ; Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Degiovanni, A (CERN) ; Sousa, F S Domingues (CERN) ; Effinger, E (CERN) ; Holzer, E B (CERN) ; Quirante, J L Navarro (CERN) ; del Busto, E N (CERN ; Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Tecker, F (CERN) ; Viganò, W (CERN) ; Welsch, C P (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) et al.
Due to the secondary showers generated when a particle hits the vacuum chamber, beam losses at an accelerator may be detected via radiation detectors located near the beam line. Several sources of background can limit the sensitivity and reduce the dynamic range of a Beam Loss Monitor (BLM). [...]
2015 - 8 p.
- Published in : Phys. Procedia 77 (2015) 21-28
Elsevier Open Access article: PDF;
In : International Conference on Laser Applications at Accelerators, Mallorca, Spain, 25 - 27 Mar 2015, pp.21-28
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3.
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An Optical Fibre BLM System at the Australian Synchrotron Light Source
/ Kastriotou, Maria (CERN ; U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Boland, Mark (U. Melbourne (main) ; Synchrotron Light Source Australia, Clayton) ; Holzer, Eva Barbara (CERN) ; Nebot Del Busto, Eduardo (CERN ; U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Welsch, Carsten (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.)
Increasing demands on high energy accelerators are triggering R&D; into improved beam loss monitors with a high sensitivity and dynamic range and the potential to efficiently protect the machine over its entire length. Optical fibre beam loss monitors (OBLMs) are based on the detection of Cherenkov radiation from high energy charged particles. [...]
2017 - 4 p.
- Published in : 10.18429/JACoW-IBIC2016-WEPG20
Fulltext: PDF;
In : International Beam Instrumentation Conference, Barcelona, Spain, 11 - 15 Sep 2016, pp.WEPG20
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4.
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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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5.
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BLM Crosstalk Studies on the CLIC Two-Beam Module
/ Kastriotou, Maria (CERN ; Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Döbert, Steffen (CERN) ; Domingues Sousa, Fernando (CERN) ; Effinger, Ewald (CERN) ; Farabolini, Wilfrid (CERN ; CEA, DSM, Saclay ; IRFU, Saclay) ; Holzer, Eva Barbara (CERN) ; Nebot Del Busto, Eduardo (CERN ; Liverpool U.) ; Viganò, William (CERN) ; Welsch, Carsten (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.)
The Compact Linear Collider (CLIC) is a proposal for a future linear e⁺-e⁻ accelerator that can reach 3 TeV centre of mass energy. It is based on a two-beam acceleration scheme, with two accelerators operating in parallel. [...]
2016 - 4 p.
- Published in : 10.18429/JACoW-IBIC2015-MOPB045
Fulltext: PDF;
In : International Beam Instrumentation Conference , Melbourne, Australia, 13 - 17 Sep 2015, pp.MOPB045
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6.
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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
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7.
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Optical Beam Loss Monitors Based on Fibres for the CLARA Phase 1 Beam-Line
/ Alexandrova, Alexandra (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Brynes, Alexander (Daresbury ; Cockcroft Inst. Accel. Sci. Tech.) ; 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.) ; Tzoganis, Vasilis (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.)
Fibre based Optical Beam Loss Monitors (oBLMs) are on-line devices used in-situ to measure losses along a beam-line. The technology is based on the detection of Cherenkov radiation, produced inside quartz fibres placed alongside the beampipe, from the interaction of secondary showers generated from losses hitting the vacuum pipe. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPML090
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPML090
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8.
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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
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Update on beam loss monitoring at CTF3 for CLIC
/ Devlin, L J (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Welsch, C P (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Effinger, E (CERN) ; Holzer, E B (CERN) ; del Busto, E N (Cockcroft Inst. Accel. Sci. Tech. ; CERN) ; Mallows, S (Cockcroft Inst. Accel. Sci. Tech. ; CERN) ; Branger, E (Linkoping U.)
The primary role of the beam loss monitoring (BLM) system for the compact linear collider (CLIC) study is to work within the machine protection system. Due to the size of the CLIC facility, a BLM that covers large distances along the beam line is highly desirable, in particular for the CLIC drive beam decelerators, which would alternatively require some ~40,000 localised monitors. [...]
2013
Published version from JACoW: PDF;
In : 2nd International Beam Instrumentation Conference, Oxford, UK, 16 - 19 Sep 2013, pp.WEPC43
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10.
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Methodology, Characterisation and Results from the Prototype Beam Loss Monitoring ASIC at CERN
/ Martina, Francesco (CERN ; Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Bradley, James W (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Giangrande, Luca (CERN) ; Kaplon, J (CERN) ; Leitao, Pedro V (CERN) ; Welsch, Carsten P (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Zamantzas, Christos (CERN)
The characterisation of novel beam loss monitoring front-end converters, based on radiation-hardened application-specific integrated circuits (ASIC), is undergoing at CERN. An effective performance analysis of the newly developed ASICs plays a key role in their candidacy for the future installation in the HL-LHC complex. [...]
JACoW, 2021 - 5 p.
- Published in : JACoW IBIC 2021 (2021) 294-298
Fulltext: PDF;
In : 10th International Beam Instrumentation Conference (IBIC 2021), Online, Korea, 13 - 17 Sep 2021, pp.294-298
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