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LINAC4 Laser Profile and Emittance Meter Commissioning
/ Goldblatt, Aurélie (CERN) ; Andreassen, Odd (CERN) ; Boorman, Gary (JAI, UK) ; Bosco, Alessio (JAI, UK) ; Gibson, Stephen (JAI, UK) ; Hofmann, Thomas (Unlisted, CH) ; Roncarolo, Federico (CERN) ; Tagg, Joseph (CERN)
The CERN LINAC4 is now equipped with two laser profile and emittance meters, a basically non destructive measurement of the transverse beam profile, not limited by the beam power density. The light of a pulsed laser is trans- ported through optical fibers and focused into the 160 MeV/c $H^{-}$ beam. [...]
2022 - 5 p.
- Published in : JACoW IBIC 2022 (2022) 357-361
Fulltext: PDF;
In : 11th International Beam Instrumentation Conference (IBIC 2022), Cracow, Poland, 11 - 15 Sep 2022, pp.357-361
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2.
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Gamma Factory for CERN initiative - progress report
/ Dutheil, Yann (CERN) ; Abramov, Andrey (Royal Holloway, U. of London) ; Alden, Siobhan (Royal Holloway, U. of London) ; Alemany Fernandez, Reyes (CERN) ; Antsiferov, Pavel (Troitsk, IZMIRAN) ; Apyan, Armen (NAS Armenia, Yerevan) ; Bartosik, Hannes (CERN) ; Bessonov, Evgeny (Lebedev Inst.) ; Biancacci, Nicolo (CERN) ; Bieron, Jacek (Jagiellonian U.) et al.
The Gamma Factory (GF) initiative proposes to use partially stripped ion (PSI) beams as drivers of a new type of high-intensity and high-energy (0.1–400 MeV) photon source. As part of the ongoing Physics Beyond Collider studies, initial beam tests were carried out in 2017 and 2018 at the SPS and LHC with partially stripped xenon and lead beams [...]
CERN-PBC-CONF-2021-006.-
SISSA, 2020 - 10 p.
- Published in : PoS EPS-HEP2019 (2020) 020
Fulltext from publisher: PDF;
In : European Physical Society Conference on High Energy Physics (EPS-HEP) 2019, Ghent, Belgium, 10 - 17 Jul 2019, pp.020
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3.
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Beam Measurements at the CERN SPS Using Interferometric Electro-Optic Pickups
/ Arteche, Alberto (Royal Holloway, U. of London) ; Bashforth, Sophie (JAI, UK) ; Bosco, Alessio (JAI, UK ; Royal Holloway, U. of London) ; Gibson, Stephen (Royal Holloway, U. of London ; JAI, UK) ; Krupa, Michal (CERN) ; Lefèvre, Thibaut (CERN)
Since 2016 a prototype electro-optic pickup has been installed on the SPS as part of the ongoing development of a high bandwidth electro-optic beam position monitor for the High Luminosity LHC. Following the success of initial beam signal observations with the prototype, improvements of the sensitivity and stability of the pickup have become the main focus of the project. [...]
2019 - 4 p.
- Published in : 10.18429/JACoW-IBIC2019-WEAO04
Fulltext: PDF;
In : 8th International Beam Instrumentation Conference (IBIC 2019), Malmo, Sweden, 8 - 12 Sep 2019, pp.WEAO04
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4.
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Gamma Factory at CERN: Design of a proof-of-principle experiment
/ Dutheil, Yann (CERN) ; Alden, Siobhan (JAI, UK ; Royal Holloway, U. of London) ; Alemany-Fernández, Reyes (CERN) ; Apyan, Armen (Yerevan Phys. Inst.) ; Bartosik, Hannes (CERN) ; Bessonov, Evgeny (LPI, Moscow (main)) ; Biancacci, Nicolo (CERN) ; Bosco, Alessio (Royal Holloway, U. of London ; JAI, UK) ; Bruce, Roderik (CERN) ; Castelli, Fabrizio (INFN, Milan) et al.
The Gamma Factory (GF) initiative proposes to create novel research tools at CERN by producing, accelerating and storing highly relativistic partially stripped ion beams in the LHC rings and by exciting their atomic degrees of freedom by lasers, to produce high-energy photon beams. Their intensity would be several orders of magnitude higher than those of the presently operating light sources in the particularly interesting gamma-ray energy domain reaching up to 400 MeV. [...]
CERN-PBC-CONF-2021-009; CERN-ACC-2019-153.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-MOPRB052
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPRB052
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Characterisation of electro-optic pickups for high bandwidth diagnostics at the High Luminosity LHC
/ Arteche, Alberto (JAI, UK ; Royal Holloway, U. of London) ; Bashforth, Sophie (JAI, UK ; Royal Holloway, U. of London) ; Bosco, Alessio (JAI, UK ; Royal Holloway, U. of London) ; Gibson, Stephen (JAI, UK ; Royal Holloway, U. of London) ; Krupa, Michal (CERN) ; Lefèvre, Thibaut (CERN) ; Penman, Inada (JAI, UK ; Royal Holloway, U. of London)
A high bandwidth electro-optical beam position monitor is under development for the High Luminosity LHC. A series of measurements of the electro-optic signals were previously obtained by an EO-BPM prototype installed in the SPS. [...]
CERN-ACC-2019-204.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPGW088
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPGW088
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6.
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First Beam Tests at the CERN SPS of an Electro-Optic Beam Position Monitor for the HL-LHC
/ Arteche, Alberto (Royal Holloway, U. of London) ; Bashforth, Sophie (JAI, UK) ; Boorman, Gary (Royal Holloway, U. of London ; JAI, UK) ; Bosco, Alessio (Royal Holloway, U. of London ; JAI, UK) ; Chritin, Nicolas (CERN) ; Gibson, Stephen (Royal Holloway, U. of London ; JAI, UK) ; Krupa, Michal (CERN) ; Lefèvre, Thibaut (CERN) ; Levens, Thomas (CERN)
An Electro-Optic Beam Position Monitor is being developed for the HL-LHC, aimed at the detection of high order proton bunch instabilities and as a diagnostic for crabbed bunch rotation. A prototype EO-BPM was installed in the CERN SPS during 2016 and recent first beam tests of the EO pick-up are presented. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IBIC2017-TUPCF23
Fulltext: PDF;
In : 6th International Beam Instrumentation Conference, Grand Rapids, MI, USA, 20 -24 Aug 2017, pp.TUPCF23
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Commissioning of the Operational Laser Emittance Monitors for LINAC4 at CERN
/ Hofmann, Thomas (Royal Holloway, U. of London) ; Boorman, Gary (Royal Holloway, U. of London) ; Bosco, Alessio (Royal Holloway, U. of London) ; Gibson, Stephen (Royal Holloway, U. of London) ; Roncarolo, Federico (CERN)
A laser-based emittance monitor has been developed to non-invasively measure the transverse emittance of the LINAC4 H⁻ beam at its top energy of 160MeV. After testing several sub-systems of the instrument during linac commissioning at intermediate energies, two instruments are now permanently installed. [...]
CERN-ACC-2018-098.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-WEPAL074
Fulltext: wepal074_2 - PDF; wepal074 - PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAL074
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8.
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Enhanced Bunch Monitoring by Interferometric Electro-Optic Methods
/ Gibson, Stephen (Royal Holloway, U. of London ; JAI, UK) ; Arteche, Alberto (Royal Holloway, U. of London) ; Bashforth, Sophie (JAI, UK) ; Bosco, Alessio (Royal Holloway, U. of London ; JAI, UK) ; Krupa, Michal (CERN) ; Lefèvre, Thibaut (CERN)
A prototype Electro-Optic Beam Position Monitor has been installed for tests* in the CERN SPS to develop the concept for high-bandwidth (6-12GHz) monitoring of crabbed-bunch rotation and intra-bunch instabilities at the High Luminosity LHC**. The technique relies on the ultrafast response of birefringent MgO:LiNO3 crystals to optically measure the intra-bunch transverse displacement of a passing relativistic bunch. [...]
CERN-ACC-2018-100.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-WEPAL073
Fulltext: wepal073 - PDF; wepal073_3 - PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAL073
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9.
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Experimental Results of a Compact Laserwire System for Non-Invasive H⁻ Beam Profile Measurements at CERN's Linac4
/ Gibson, Stephen (Royal Holloway, U. of London) ; Boorman, Gary (Royal Holloway, U. of London) ; Bosco, Alessio (Royal Holloway, U. of London) ; Hofmann, Thomas (CERN ; Royal Holloway, U. of London) ; Raich, Uli (CERN) ; Roncarolo, Federico (CERN)
A non-invasive laserwire system is being developed for quasi-continuous monitoring of the transverse profile and emittance of the final 160 MeV beam at CERN's LINAC4. As part of these developments, a compact laser-based profile monitor was recently tested during LINAC4 commissioning at beam energies of 50 MeV, 80 MeV and 10⁷ MeV. [...]
2017 - 4 p.
- Published in : 10.18429/JACoW-IBIC2016-TUPG77
Fulltext: PDF;
In : International Beam Instrumentation Conference, Barcelona, Spain, 11 - 15 Sep 2016, pp.TUPG77
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10.
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Development of a Prototype Electro-Optic Beam Position Monitor at the CERN SPS
/ Arteche, Alberto (Royal Holloway, U. of London) ; Bosco, Alessio (Royal Holloway, U. of London) ; Chritin, Nicolas (CERN) ; Draskovic, Drasko (CERN) ; Gibson, Stephen (Royal Holloway, U. of London) ; Lefèvre, Thibaut (CERN) ; Levens, Thomas (CERN)
A novel electro-optic beam position monitor capable of rapidly (<50ps) monitoring transverse intra-bunch perturbations is under development for the HL-LHC project. The EO-BPM relies on the fast optical response of two pairs of electro-optic crystals, whose birefringence is modified by the passing electric field of a 1ns proton bunch. [...]
2017 - 4 p.
- Published in : 10.18429/JACoW-IBIC2016-WEPG09
Fulltext: PDF;
In : International Beam Instrumentation Conference, Barcelona, Spain, 11 - 15 Sep 2016, pp.WEPG09
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