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First Results From the Operation of a Rest Gas Ionisation Profile Monitor Based on a Hybrid Pixel Detector
/ Storey, James (CERN) ; Bertsche, William (Manchester U.) ; Bodart, Dominique (CERN) ; Dehning, Bernd (CERN) ; Gibson, Stephen (Royal Holloway, U. of London) ; Levasseur, Swann (Royal Holloway, U. of London) ; Sandberg, Hampus (Manchester U.) ; Sapinski, Mariusz (Darmstadt, GSI) ; Satou, Kenichirou (KEK, Tsukuba) ; Schneider, Gerhard (CERN) et al.
A novel rest gas ionisation profile monitor which aims to provide a continuous non-destructive bunch-by-bunch measurement of the transverse emittance is currently under development for the CERN Proton Synchrotron (CPS). Uniquely for this type of instrument the imaging detector that measures the position of the ionisation electrons consists of an array of pixelated silicon sensors which are read-out using Timepix3 readout chips. [...]
2018 - 5 p.
- Published in : 10.18429/JACoW-IBIC2017-WE2AB5
Fulltext: PDF;
In : 6th International Beam Instrumentation Conference, Grand Rapids, MI, USA, 20 -24 Aug 2017, pp.WE2AB5
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2.
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Time-Resolved Transverse Beam Profile Measurements with a Rest Gas Ionisation Profile Monitor Based on Hybrid Pixel Detectors
/ Levasseur, Swann (Royal Holloway, U. of London) ; Bertsche, William (U. Manchester (main)) ; Bodart, Dominique (CERN) ; Gibson, Stephen (Royal Holloway, U. of London) ; Huschauer, Alexander (CERN) ; Sandberg, Hampus (U. Manchester (main)) ; Sapinski, Mariusz (Darmstadt, GSI) ; Satou, Kenichirou (JAEA, Ibaraki) ; Schneider, Gerhard (CERN) ; Storey, James (CERN) et al.
A novel rest gas ionisation profile monitor which aims to provide continuous, bunch-by-bunch and turn-by-turn measurement of the transverse beam profile has recently been in- stalled in the CERN Proton Synchrotron (PS) as part of the LHC Injector Upgrade (LIU) project. The instrument consists of an electric drift field to transport ionisation electrons produced by beam-gas interaction onto a measurement plane, and a magnetic field to maintain the transverse position of the ionisation electrons. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-WEPAL075
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAL075
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Commissioning of Timepix3 Based Beam Gas Ionisation Profile Monitors for the CERN Proton Synchrotron
/ Sandberg, Hampus (CERN) ; Bertsche, William (Cockcroft Inst. Accel. Sci. Tech.) ; Bodart, Dominique (CERN) ; Gibson, Stephen (JAI, UK) ; Jensen, Steen (CERN) ; Levasseur, Swann (CERN) ; Satou, Kenichirou (KEK, Tsukuba) ; Schneider, Gerhard (CERN) ; Storey, James (CERN) ; Veness, Raymond (CERN)
A pair of operational Beam Gas Ionisation (BGI) profile monitors was installed in the CERN Proton Synchrotron (PS) at the beginning of 2021. These instruments use Timepix3 hybrid pixel detectors to continuously measure the beam profile throughout the cycle in the horizontal and vertical planes. [...]
JACoW, 2021 - 4 p.
- Published in : JACoW IBIC 2021 (2021) 172-175
Fulltext: PDF;
In : 10th International Beam Instrumentation Conference (IBIC 2021), Online, Korea, 13 - 17 Sep 2021, pp.172-175
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4.
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Measuring the Beam Profile by Counting Ionization Electrons
/ Sandberg, Hampus (Manchester U. ; CERN) ; Bertsche, William (Manchester U.) ; Bodart, Dominique (CERN) ; Dehning, Bernd (CERN) ; Gibson, Stephen (Royal Holloway, U. of London) ; Levasseur, Swann (CERN) ; Satou, Kenichirou (J-PARC ; KEK, Tsukuba ; JAEA, Ibaraki) ; Schneider, Gerhard (CERN) ; Storey, James (CERN) ; Veness, Raymond (CERN)
The principle of non-destructive beam profile measurement with rest gas ionization electrons has remained largely unchanged since the technique was first proposed in the late 1960's. Ionization electrons (or ions) are transported by an electrostatic field onto an imaging detector, where the spatial distribution of detected electrons is a direct measure of the transverse beam profile. [...]
2019 - 4 p.
- Published in : 10.18429/JACoW-IBIC2019-TUBO04
Fulltext: PDF;
In : 8th International Beam Instrumentation Conference (IBIC 2019), Malmo, Sweden, 8 - 12 Sep 2019, pp.TUBO04
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5.
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Development of an Ionization Profile Monitor Based on a Pixel Detector for the CERN Proton Synchrotron
/ Storey, James (CERN) ; Bodart, Dominique (CERN) ; Dehning, Bernd (CERN) ; Levasseur, Swann (CERN) ; Pacholek, Piotr (CERN) ; Rakai, Aniko (CERN) ; Sapinski, Mariusz (CERN) ; Satou, Kenichirou (JAEA, Ibaraki) ; Schneider, Gerhard (CERN) ; Steyart, Didier (CERN)
The transverse emittance measurement in the CERN Proton Synchrotron is currently performed using fast rotational wire scanners. These scanners cannot provide continuous bunch-by-bunch measurements and the expected future increase of the beam brightness will lead to an accelerated sublimation of the wire. [...]
2016 - 4 p.
- Published in : 10.18429/JACoW-IBIC2015-TUPB059
Fulltext: PDF;
In : International Beam Instrumentation Conference , Melbourne, Australia, 13 - 17 Sep 2015, pp.TUPB059
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6.
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A Novel Field Cage Design for the CPS IPM and Systematic Errors in Beam Size and Emittance
/ Satou, Kenichirou (JAEA, Ibaraki) ; Bodart, Dominique (CERN) ; Levasseur, Swann (CERN) ; Sapinski, Mariusz (Darmstadt, GSI) ; Schneider, Gerhard (CERN) ; Storey, James (CERN)
An ionization profile monitor has been recently installed in the CERN proton synchrotron. We present the design for a novel and simplified field cage structure that sup- presses the secondary electrons that are induced by the ionized ions. [...]
2018 - 4 p.
- Published in : (2018) , pp. WEPAL019
- Published in : J. Phys.: Conf. Ser. 1067 (2018) 072008
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAL019
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First use of Timepix3 hybrid pixel detectors in ultra-high vacuum for beam profile measurements
/ Sandberg, H (CERN ; U. Manchester (main)) ; Bertsche, W (U. Manchester (main)) ; Bodart, D (CERN) ; Dehning, B (CERN) ; Gibson, S (Royal Holloway, U. of London) ; Levasseur, S (CERN ; Royal Holloway, U. of London) ; Satou, K (KEK, Tsukuba) ; Schneider, G (CERN) ; Storey, J W (CERN) ; Veness, R (CERN)
A transverse beam gas ionization profile monitor is currently under development for the CERN Proton Synchrotron (PS) to provide non-destructive continuous measurements during a beam cycle. The implementation is exploring a novel use of the Timepix3 hybrid pixel detector mounted inside the ultra-high vacuum of the accelerator beam pipe to provide direct detection of ionization electrons. [...]
2019 - 10 p.
- Published in : JINST 14 (2019) C01013
In : 20th International Workshop On Radiation Imaging Detectors, Sundsvall, Sweden, 24 - 28 Jun 2018, pp.C01013
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8.
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Matching Studies Between the CERN PSB and PS Using Turn-by-Turn Beam Profile Acquisitions with a Residual Beam Gas Ionisation Monitor
/ Fraser, Matthew (CERN) ; Coly, Marcel (CERN) ; Guerrero, Ana (CERN) ; Huschauer, Alexander (CERN) ; Jensen, Steen (CERN) ; Levasseur, Swann (CERN) ; Roncarolo, Federico (CERN) ; Rossi, Adriana (CERN) ; Sandberg, Hampus (CERN) ; Storey, James (CERN)
In the framework of the LHC Injectors Upgrade project, the Beam Gas Ionisation (BGI) profile monitors installed in the Proton Synchrotron (PS) were fitted with a gas injection system capable of boosting the signal rate high enough to capture single turn acquisitions immediately after injection. This contribution reports on the studies carried out during the beam commissioning of the BGI system in a turn-by-turn matching monitor mode for its eventual implementation in an optimisation framework to preserve emittance during transfer between the PS Booster and PS. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2161-2164
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2161-2164
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9.
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Development of a rest gas ionisation profile monitor for the CERN Proton Synchrotron based on a Timepix3 pixel detector
/ Levasseur, S (CERN ; Royal Holloway, U. of London) ; Dehning, B (CERN) ; Gibson, S (Royal Holloway, U. of London) ; Sandberg, H (CERN) ; Sapinski, M (Darmstadt, GSI) ; Sato, K (KEK, Tsukuba) ; Schneider, G (CERN) ; Storey, J (CERN)
A fast non-destructive transverse profile monitor, named PS Beam Gas Ionization monitor (PS- BGI), is under development at CERN for the Proton Synchrotron (PS). This monitor infers the beam profile from the transverse distribution of electrons created by the ionisation of rest gas molecules by the high energy beam particles. [...]
2017 - 8 p.
- Published in : JINST 12 (2017) C02050
In : Topical Workshop on Electronics for Particle Physics, Karlsruhe, Germany, 26 - 30 Sep 2016, pp.C02050
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10.
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Commissioning the New CERN Beam Instrumentation Following the Upgrade of the LHC Injector Chain
/ Roncarolo, Federico (CERN) ; Bart Pedersen, Stephane (CERN) ; Belleman, Jeroen (CERN) ; Belohrad, David (CERN) ; Bozzolan, Michele (CERN) ; Bracco, Chiara (CERN) ; Di Carlo, Salvatore (CERN) ; Emery, Jonathan (CERN) ; Goldblatt, Aurélie (CERN) ; Guerrero, Ana (CERN) et al.
The LHC injectors Upgrade (LIU) program has been fully implemented during the second long shutdown (LS2), which took place in 2019-20. In this context, new or upgraded beam instrumentation was developed to cope with H⁻ beam in LINAC4 and the new Proton Synchrotron Booster (PSB) injection systems which would provide high brightness proton beams in the rest of the injector complex. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 976-979
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.976-979
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