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Beam Loss in the Low Energy Ion Ring (LEIR) in the Light of the LHC Injector Upgrade for Ions (LIU-Ions)
/ Bodendorfer, Michael (CERN) ; Angoletta, Maria Elena (CERN) ; Axensalva, Jerome (CERN) ; Manglunki, Django (CERN) ; Pasinelli, Sergio (CERN)
For the LHC injector upgrade, the Low Energy Ion Ring (LEIR) is requested to deliver twice the intensity per extraction compared to the last Pb⁵⁴⁺ ion run in 2013 (i.e. 2 bunches of 5.5·10¹⁰ charges). [...]
2016 - 3 p.
- Published in : 10.18429/JACoW-HIAT2015-TUM1C01
Fulltext: PDF;
In : 13th International Conference on Heavy Ion Accelerator Technology, Yokohama, Japan, 07-11 Sep 2015, pp.TUM1C01
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Performance of the CERN Low Energy Ion Ring (LEIR) with Xenon beams
/ Alemany-Fernández, Reyes (CERN) ; Albright, Simon (CERN) ; Andujar, Oscar (CERN) ; Angoletta, Maria Elena (CERN) ; Axensalva, Jerome (CERN) ; Bartosik, Hannes (CERN) ; Baud, Guillaume (CERN) ; Biancacci, Nicolo (CERN) ; Bozzolan, Michele (CERN) ; Cettour Cave, Stephane (CERN) et al.
In 2017 the CERN Low Energy Ion Ring demonstrated once more the feasibility of injecting, accumulating, cooling and accelerating a new nuclei, $^{129}$Xe${39+}$. The operation of this new ion species started at the beginning of March with the start up of the xenon ion source and the Linac3. [...]
CERN-ACC-2018-144.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-TUPAF020
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.TUPAF020
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CERN's Fixed Target Primary Ion Programme
/ Manglunki, Django (CERN) ; Angoletta, Maria Elena (CERN) ; Axensalva, Jerome (CERN) ; Bellodi, Giulia (CERN) ; Blas, Alfred (CERN) ; Bodendorfer, Michael (CERN) ; Bohl, Thomas (CERN) ; Cettour-Cave, Stephane (CERN) ; Cornelis, Karel (CERN) ; Damerau, Heiko (CERN) et al.
The renewed availability of heavy ions at CERN for the needs of the LHC programme has triggered the interest of the fixed-target community. The project, which involves sending several species of primary ions at various energies to the North Area of the Super Proton Synchrotron, has now entered its operational phase. [...]
CERN-ACC-2016-275.-
2016 - 4 p.
- Published in : 10.18429/JACoW-IPAC2016-TUPMR027
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.TUPMR027
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The New LEIR Digital Low-Level RF System
/ Angoletta, Maria Elena (CERN) ; Albright, Simon (CERN) ; Findlay, Alan (CERN) ; Haase, Matthias (CERN) ; Hancock, Steven (CERN) ; Jaussi, Michael (CERN) ; Molendijk, John (CERN) ; Paoluzzi, Mauro (CERN) ; Sanchez-Quesada, Jorge (CERN)
CERN's Low Energy Ion Ring (LEIR) low-level RF (LLRF) system has been successfully upgraded in 2016 to the new digital, LLRF family for frequency-sweeping synchrotrons developed at CERN. For LEIR it implements not only beam loops but also the voltage and phase loops required for the control of two Finemet-based High-Level RF (HLRF) systems. [...]
CERN-ACC-2017-236.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-THPAB144
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.THPAB144
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Initial Beam Results of CERN ELENA's Digital Low-Level RF System
/ Angoletta, Maria Elena (CERN) ; Albright, Simon (CERN) ; Energico, Salvatore (CERN) ; Hancock, Steven (CERN) ; Jaussi, Michael (CERN) ; Jones, Anthony (CERN) ; Molendijk, John (CERN) ; Paoluzzi, Mauro (CERN) ; Sanchez-Quesada, Jorge (CERN)
The Extra Low ENergy Antiproton (ELENA) decelerator is under commissioning at CERN. This decelerator is equipped with a new digital low-level RF (LLRF) system, in-house developed and belonging to the LLRF family already deployed in CERN's PS Booster and Low Energy Ion Ring (LEIR) synchrotrons. [...]
CERN-ACC-2017-264.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-THPAB142
Fulltext: thpab142 - PDF; thpab142_2 - PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.THPAB142
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Performance of the CERN Injector Complex and Transmission Studies into the LHC during the Second Proton-Lead Run
/ Alemany-Fernández, Reyes (CERN) ; Albright, Simon (CERN) ; Angoletta, Maria Elena (CERN) ; Axensalva, Jerome (CERN) ; Bartmann, Wolfgang (CERN) ; Bartosik, Hannes (CERN) ; Baudrenghien, Philippe (CERN) ; Bellodi, Giulia (CERN) ; Blas, Alfred (CERN) ; Bohl, Thomas (CERN) et al.
The LHC performance during the proton-lead run in 2016 fully relied on a permanent monitoring and systematic improvement of the beam quality in all the injectors. The beam production and characteristics are explained in this paper, together with the improvements realized during the run from the source up to the flat top of the LHC [...]
CERN-ACC-2017-155.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPVA128
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPVA128
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Detailed characterisation of the LEIR intensity limitations for a Pb ion beam
/ Saá Hernández, Angela (CERN) ; Bartosik, Hannes (CERN) ; Biancacci, Nicolo (CERN) ; Hirlaender, Simon (CERN) ; Moreno, Daniel (CERN) ; Zampetakis, Michail (CERN)
The equilibrium emittance of the Pb beam in the CERN Low Energy Ion Ring (LEIR) results from the interplay of electron cooling and heating processes, as intra-beam scattering and space charge. In this paper we present the measurements of the emittance evolution as a function of intensity, working point and resonance excitation, and compare them with the simulations of the heating processes. [...]
CERN-ACC-2019-109.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPTS042
Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPTS042
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The LHC Injectors Upgrade (LIU) Project at CERN: Ion Injector Chain
/ Bartosik, Hannes (CERN) ; Albright, Simon (CERN) ; Angoletta, Maria Elena (CERN) ; Bellodi, Giulia (CERN) ; Biancacci, Nicolo (CERN) ; Bohl, Thomas (CERN) ; Coupard, Julie (CERN) ; Damerau, Heiko (CERN) ; Funken, Anne (CERN) ; Goddard, Brennan (CERN) et al.
The LHC injector chain for Pb-ion beams at CERN consists of Linac3, the accumulator ring LEIR, the PS and the SPS. In the context of the LHC injectors upgrade (LIU) project an intense program of machine development studies has been performed in the last two years to maximise the intensity of Pb-ion beams at LHC injection. [...]
CERN-ACC-2017-206.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPVA020
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPVA020
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Space charge driven beam loss for cooled beams and mitigation measures in the CERN Low Energy Ion Ring
/ Bartosik, Hannes (CERN) ; Hancock, Steven (CERN) ; Huschauer, Alexander (CERN) ; Kain, Verena (CERN)
The performance of the CERN Low Energy Ion Ring (LEIR) with electron cooled lead ion beams is presently limited by losses, which occur during RF capture and the first part of acceleration. Extensive experimental studies performed in 2015 indicate that the losses are caused by the interplay of betatron resonances and the direct space charge detuning, which is significantly enhanced during bunching. [...]
2016 - 6 p.
- Published in : 10.18429/JACoW-HB2016-TUAM5X01
Fulltext: PDF;
In : 57th ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, Malmö, Sweden, 3 - 8 Jul 2016, pp.TUAM5X01
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