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1.
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Plasma Cleaning of Hydrocarbon and Carbon Contaminated Surfaces of Accelerator Components
/ Giordano, M C (CERN) ; Pinto, P Costa (CERN) ; Henrist, B (CERN) ; Himmerlich, M (CERN) ; Taborelli, M (CERN) ; Thaus, N (CERN) ; Carlino, V (Unlisted, US) ; Fahey, M (Unlisted, US) ; Monteiro, J (Unlisted, US) ; Tran, L (Unlisted, US)
To achieve the vacuum quality required for the operation of particle accelerators, the surface of the vacuum vessels must be clean and free of hydrocarbons. This is usually done by wet chemistry processes, e.g. [...]
2024 - 6 p.
- Published in : J. Phys. : Conf. Ser.: 2687 (2024) , no. 8, pp. 082048
- Published in : JACoW IPAC: 2023 (2023) , pp. THPM038
Fulltext: PublicationJACoW - PDF; PublicationIOP - PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.082048
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2.
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Design and characterization of an antiproton deceleration beamline for the PUMA experiment
/ Fischer, Jonas (Darmstadt, Tech. U.) ; Schmidt, Alexander (Darmstadt, Tech. U.) ; Azaryan, Nikolay (CERN) ; Butin, François (CERN) ; Somoza, Jose Ferreira (CERN) ; Husson, Audric (Darmstadt, Tech. U.) ; Klink, Clara (CERN) ; Obertelli, Alexandre (Darmstadt, Tech. U.) ; Schlaich, Moritz (Darmstadt, Tech. U.) ; Sinturel, Alexandre (CERN) et al.
We report on the design and characterization of an antiproton deceleration beamline, based on a pulsed drift tube, for the PUMA experiment at the Antimatter Factory at CERN. The design has been tailored to high-voltage (100 kV) and ultra-high vacuum (below $10^{-10}$ mbar) conditions. [...]
arXiv:2401.11875.-
2024-03-15 - 9 p.
- Published in : Nucl. Instrum. Methods Phys. Res., B 550 (2024) 165318
Fulltext: 2401.11875 - PDF; Publication - PDF;
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3.
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Linac4 H$^-$ source R&D;: Cusp free ICP and magnetron discharge
/ Lettry, J (CERN) ; Bertolo, S (CERN) ; Fantz, U (Garching, Max Planck Inst.) ; Guida, R (CERN) ; Kapusniak, K (CERN) ; Di Lorenzo, F (CERN) ; Machado, C (CERN) ; Mastrostefano, C (CERN) ; Minea, T (LPGP, Orsay) ; O'Neil, M (CERN) et al.
The 2MHz radio-frequency inductively coupled plasma heating (ICP RF) of Linac4’s IS03 H-
source is more
efficient without its octupole cusp in offset hallbach configuration. This was shown by Particle in cell Monte-Carlo (PICMC) simulation using the NINJA software [1] and confirmed by plasma characterization via optical emission spectroscopy
[2,3], an easier plasma ignition is also anticipated. [...]
2018 - 6 p.
- Published in : AIP Conf. Proc. 2052 (2018) 050008
In : 6th International Symposium on Negative Ions, Beams and Sources, Novosibirsk, Russia, 3 - 7 Sep 2018, pp.050008
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4.
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Construction and Installation of the New CERN Proton Synchrotron Internal Beam Dumps
/ Andersen, Kristian G (CERN) ; Calviani, Marco (CERN) ; Cherif, Ahmed (CERN) ; Coiffet, Thibaut (CERN) ; De Macedo, Aurelio (CERN) ; Devidal, Sylvain (CERN) ; Geisser, Jean-Marie (CERN) ; Gilardoni, Simone S (CERN) ; Gillet, Martin (CERN) ; Grenier-Boley, Edouard (CERN) et al.
In the framework of the CERN Large Hadron Collider Injectors Upgrade (LIU) Project, the Proton Synchrotron (PS) has been equipped with two new movable Internal Dumps (PSID), each of them capable of absorbing particle beams of an energy of up to 100 kJ. These dumps replace the old Internal Dumps, which have been operated in the accelerator complex since their installation in 1975 until their decommissioning and removal from the machine during the second LHC Long Shut down (LS2). [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 1409-1412
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1409-1412
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5.
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Experience with the conditioning of Linac4 RF cavities
/ Papadopoulos, Sotirios (CERN) ; Gerigk, Frank (CERN) ; Giguet, Jean-Michel (CERN) ; Hansen, Jan (CERN) ; Marques Balula, Jose (CERN) ; Michet, Alice (CERN) ; Ramberger, Suitbert (CERN) ; Thaus, Nicolas (CERN) ; Wegner, Rolf (CERN)
Linac4, the future H⁻ injector of the PS complex at CERN has reached the hardware and beam commissioning phase. This paper summarizes the experience gained in RF conditioning of the DTL, CCDTL and PIMS cavities. [...]
CERN-ACC-2017-344.-
2017 - 4 p.
- Published in : 10.18429/JACoW-LINAC2016-THPLR060
Fulltext: PDF;
In : 28th Linear Accelerator Conference, East Lansing, Michigan, 25 - 30 Sep 2016, pp.THPLR060
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6.
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Linac4 PIMS Construction and First Operation
/ Wegner, Rolf (CERN) ; Behr, Wilfried (Julich, Forschungszentrum) ; Brzezinski, Grzegorz (NCBJ, Swierk) ; Favre, Gilles (CERN) ; Françon, Patrice (CERN) ; Geisser, Jean-Marie (CERN) ; Gerigk, Frank (CERN) ; Giguet, Jean-Michel (CERN) ; Hansen, Jan (CERN) ; Krawczyk, Pawel (NCBJ, Swierk) et al.
Linac4, CERN's new H⁻ injector Linac uses PI-Mode Structures (PIMS) for the energy range between 10³ and 160 MeV. 180 copper elements for 12 PIMS cavities have been fabricated in a collaboration between CERN, NCBJ and FZJ from 2011 to 2016. [...]
CERN-ACC-2017-233.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-THPIK094
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.THPIK094
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7.
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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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8.
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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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9.
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CERN Linac4 Drift Tube Linac Manufacturing and Assembly
/ Ramberger, Suitbert (CERN) ; Bourquin, Pierre (CERN) ; Cherif, Ahmed (CERN) ; Cuvet, Yves (CERN) ; Dallocchio, Alessandro (CERN) ; Favre, Gilles (CERN) ; Fuchs, Jean-Frederic (CERN) ; Geisser, Jean-Marie (CERN) ; Gerigk, Frank (CERN) ; Giguet, Jean-Michel (CERN) et al.
The manufacturing of the Linac4 Drift Tube Linac (DTL) components has been completed and the assembly of the structures is in its final stages. 3 tanks of 3.9m, 7.3m, and 7.3m, designed to accelerate a 40mA average pulse current H–beam from 3 to 50MeV, are being assembled from 2, 4 and 4 segments of about 2.0m length, containing each from 22 drift tubes at the low energy end, down to only 6 at the high energy end. [...]
CERN-ACC-2014-369.-
2014 - 3 p.
- Published in : (2014) , pp. THPP036
Fulltext: PDF; External link: JACoW server
In : 27th Linear Accelerator Conference, Geneva, Switzerland, 31 Aug - 5 Sep 2014, pp.THPP036
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10.
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Construction and RF Conditioning of the Cell-Coupled Drift Tube Linac (CCDTL) for Linac4 at CERN
/ Tribendis, Alexey ; Biryuchevsky, Yuri ; Kendjebulatov, Ermek ; Kruchkov, Yaroslav ; Rotov, Evgeniy ; Zhukov, Alexandr ; Cuvet, Yves (CERN) ; Dallocchio, Alessandro (CERN) ; Fuchs, Jean-Frederic (CERN) ; Gerigk, Frank (CERN) et al.
This paper reports on the construction experience of the Linac4 CCDTL, which took place in two Russian institutes in the framework of three ISTC projects in close collaboration with CERN. The tanks were constructed at VNIITF, Snezhinsk, while the drift tubes and supports were made at BINP, Novosibirsk. [...]
CERN-ACC-2014-377.-
2014 - 5 p.
- Published in : (2014) , pp. WEIOA01
Fulltext: weioa01_2 - PDF; weioa01 - PDF; External link: JACoW server
In : 27th Linear Accelerator Conference, Geneva, Switzerland, 31 Aug - 5 Sep 2014, pp.WEIOA01
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