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Specifications and Status of the New Electron Cooler for the CERN Antiproton Decelerator (AD)
/ Rossi, Adriana (CERN) ; Accettura, Carlotta (CERN) ; Andreazza, William (CERN) ; Bollazzi, Alessio (CERN) ; Cenede, Jean (CERN) ; Chritin, Nicolas (CERN) ; Coutron, Yannick (CERN) ; Ferreira Somoza, Jose (CERN) ; Frassier, Alexandre (CERN) ; Gamba, Davide (CERN) et al.
A new electron cooler for the Antiproton Decelerator (AD) is being designed at CERN, and will replace the current device (in operation for more than 40 years), during the next Long Shutdown (2026-2028). The functional specifications [ref. [...]
2024 - 6 p.
- Published in : JACoW COOL 2023 (2024) 5-10
Fulltext: PDF;
In : 14th International Workshop on Beam Cooling and Related Topics (COOL '23), Montreux, Switzerland, 8 - 13 Oct 2023, pp.5-10
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2.
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Correlation of H$^{-}$ beam properties to Cs-coverage
/ Lettry, J (CERN) ; Vnuchenko, A (CERN) ; Bertolo, S (CERN) ; Mastrostefano, C (CERN) ; O'Neil, M (CERN) ; di Lorenzo, F (CERN) ; Coutron, Y (CERN) ; Steyeart, D (CERN) ; Riffaud, B (CERN) ; Thiboud, J (CERN) et al.
A caesiated RF driven source delivers H$^{-}$ ions that, after stripping at the end of the 160 MeV H$^{-}$ linear injector, provides protons to CERN's accelerator complex including LHC, where the protons reached a record energy of 6.8 TeV. In Caesiated RF sources, H$^{-}$ ions are produced via dissociative attachment of electrons onto roto-vibrationally excited H$_{2}$-molecules (volume) and re-emission as negative ions of protons or hydrogen atoms colliding on a low work function caesiated molybdenum plasma electrode (surface). [...]
2023 - 10 p.
- Published in : JINST 18 (2023) C06023
In : 8th International symposium on Negative Ions, Beams and Sources (NIBS'22), Padua, Italy, 2 - 7 Oct 2022, pp.C06023
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3.
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Beam Formation Studies on the CERN IS03b H$^-$ Source
/ Lettry, J (CERN) ; Vnuchenko, A (CERN) ; Bertolo, S (CERN) ; Mastrostefano, C (CERN) ; O’Neil, M (CERN) ; di Lorenzo, F (CERN) ; Coutron, Y (CERN) ; Steyeart, D (CERN) ; Riffaud, B (CERN) ; Thiboud, J (CERN) et al.
An H$^{-}$ ion source is being operated at the new 160 MeV linear injector (Linac4) of the CERN accelerator complex. The source’s plasma is of the Radio Frequency Inductively Coupled Plasma type (RF-ICP), without magnetic cusp and runs with Cs-loss compensation 1 . [...]
2022 - 5 p.
- Published in : J. Phys. : Conf. Ser. 2244 (2022) 012036
Fulltext: PDF;
In : 19th International Conference on Ion Sources (ICIS 2021), Vancouver, BC, Canada, 20 - 24 Sep 2021, pp.012036
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4.
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A New Electron Cooler for the CERN Antiproton Decelerator (AD)
/ Tranquille, G (CERN) ; Cenede, J (CERN) ; Frassier, A (CERN) ; Chritin, N S (CERN) ; Coutron, Y M (CERN) ; Sinturel, A (CERN) ; Ferreira, J A (CERN) ; von Freeden, L (CERN) ; Bajas, H (CERN) ; Jorgensen, L V (CERN)
The current electron cooler at the Antiproton Decelerator (AD) at CERN was built in the second half of the 1970s and is thus well over 40 years old. It was built for the Initial Cooling Experiment (ICE) where stochastic and electron cooling were tested to ascertain the feasibility of using these techniques to generate high intensity antiproton beams for the SPpS. [...]
2021 - 3 p.
- Published in : 10.18429/JACoW-COOL2021-P2004
Fulltext: PDF;
In : International Workshop on Beam Cooling and Related Topics (COOL 2021), Novosibirsk, Russian Federation, 1 - 5 Nov 2021, pp.95-97
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5.
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Engineering Design and Prototyping of the New LIU PS Internal Beam Dumps
/ Romagnoli, Giulia (CERN) ; Briz Monago, Jose (CERN) ; Butcher, Mark (CERN) ; Calviani, Marco (CERN) ; Cotte, Denis (CERN) ; Coutron, Yannick (CERN) ; Esala, Jaakko (CERN) ; Grenier-Boley, Edouard (CERN) ; Hansen, Jan (CERN) ; Huschauer, Alexander (CERN) et al.
For the LHC Injectors Upgrade (LIU) at CERN, the two Proton Synchrotron (PS) internal dumps are being re- designed and upgraded to cope with the future high intensity beams. The dumps are installed as active elements in the lattice, in straight sections between the main bending mag- nets. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-WEPMG001
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMG001
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6.
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CERN’s Linac4 cesiated surface H$^{-}$ source
/ Lettry, J (CERN) ; Aguglia, D (CERN) ; Bertolo, S (CERN) ; Briefi, S ; Butterworth, A (CERN) ; Coutron, Y (CERN) ; Dallocchio, A (CERN) ; David, N (CERN) ; Chaudet, E (CERN) ; Fantz, U et al.
Linac4 cesiated surface H$^{-}$ sources are routinely operated for the commissioning of the CERN’s Linac4 and on an ion source test stand. Stable current of 40-50 mA are achieved but the transmission through the LEBT of 80% was below expectations and triggered additional beam simulation and characterization. [...]
2017
- Published in : AIP Conf. Proc. 1869 (2017) 030002
In : 5th International Symposium on Negative Ions, Beams and Sources, Oxford, United Kingdom, 12 - 16 Sep 2016, pp.030002
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7.
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Linac4 H− ion sources
/ Lettry, J (CERN) ; Aguglia, D (CERN) ; Alessi, J (RIKEN BNL) ; Andersson, P (CERN) ; Bertolo, S (CERN) ; Briefi, S (Augsburg U.) ; Butterworth, A (CERN) ; Coutron, Y (CERN) ; Dallocchio, A (CERN) ; David, N (CERN) et al.
CERN’s 160 MeV H−linear accelerator (Linac4) is a key constituent of the injector chain upgrade of the Large Hadron Collider that is being installed and commissioned. A cesiated surface ion source prototype is being tested and has delivered a beam intensity of 45 mA within an emittance of 0.3 π ⋅ mm ⋅ mrad. [...]
2015
- Published in : Rev. Sci. Instrum. 87 (2015) 02B139
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8.
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Status and Operation of the Linac4 Ion Source Prototypes
/ Lettry, J (CERN) ; Aguglia, D (CERN) ; Andersson, P (CERN) ; Bertolo, S (CERN) ; Butterworth, A (CERN) ; Coutron, Y (CERN) ; Dallocchio, A (CERN) ; Chaudet, E (CERN) ; Gil-Flores, J (CERN) ; Guida, R (CERN) et al.
CERN’s Linac4 45 kV H- ion sources prototypes are installed at a dedicated ion source test stand and in the Linac4 tunnel. The operation of the pulsed hydrogen injection, RF sustained plasma and pulsed high voltages are described. [...]
CERN-ACC-2014-0342.-
Geneva : CERN, 2014 - 4 p.
Fulltext: PDF;
In : 15th International Conference on Ion Sources, Chiba, Japan, 9 - 13 Sep 2013, pp.Ion Sources
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9.
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Status and Operation of the Linac4 Ion Source Prototypes
/ Lettry, J (CERN) ; Aguglia, D (CERN) ; Andersson, P (CERN) ; Bertolo, S (CERN) ; Butterworth, A (CERN) ; Coutron, Y (CERN) ; Dallocchio, A (CERN) ; Chaudet, E (CERN) ; Gil-Flores, J (CERN) ; Guida, R (CERN) et al.
CERN’s Linac4 45 kV H- ion sources prototypes are installed at a dedicated ion source test stand and in the Linac4 tunnel. The operation of the pulsed hydrogen injection, RF sustained plasma and pulsed high voltages are described. [...]
CERN-ACC-2014-0324.-
Geneva : CERN, 2014 - 4 p.
- Published in : Rev. Sci. Instrum. 85 (2014) 02B122
Fulltext: PDF;
In : 15th International Conference on Ion Sources, Chiba, Japan, 9 - 13 Sep 2013, pp.02B122
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10.
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H- Ion Sources For CERN’s Linac4
/ Lettry, J (CERN) ; Aguglia, D (CERN) ; Coutron, Y (CERN) ; Chaudeta, E (CERN) ; Dallocchio, A (CERN) ; Gil Flores, J (CERN) ; Hansen, J (CERN) ; Mahner, E (CERN) ; Mathot, S (CERN) ; Mattei, S (CERN) et al.
The specifications set to the Linac4 ion source are: H- ion pulses of 0.5 ms duration, 80 mA intensity and 45 keV energy within a normalized emittance of 0.25 mmmrad RMS at a repetition rate of 2 Hz. In 2010, during the commissioning of a prototype based on H- production from the plasma volume, it was observed that the powerful co-extracted electron beam inherent to this type of ion source could destroy its electron beam dump well before reaching nominal parameters. [...]
CERN-ATS-2013-011.-
Geneva : CERN, 2013 - 12 p.
- Published in : AIP Conf. Proc. 1515 (2013) 302-311
Fulltext: PDF;
In : 3rd International Symposium on Negative Ions, Beams and Sources, Jyväskylä, Finland, 3 - 7 Sep 2012, pp.302-311
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