CERN Accelerating science

SPS and CNGS

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2018-11-16
15:29
Construction of TT10-SPS Injection Region Model and Following Aperture Studies / Mahon, Aveen (McGill University, (CA)) ; Fraser, Matthew Alexander (CERN) ; Velotti, Francesco Maria (CERN)
The main objective of this project was to model the injection region going from the transfer line TT10 into the SPS. [...]
CERN-ACC-NOTE-2018-0074.
- 2018. - 21 p.
Full text

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2018-11-16
06:28
Evaluation of superfluid helium cooling schemes and application for HL-LHC recombination dipole D2 / Rousset, B (CEA INAC, Grenoble) ; Millet, F (CEA INAC, Grenoble)
Superfluid helium cooling offers the possibility to improve the performances of superconducting devices and infrared detectors with lower operating temperatures and provides extremely high heat transfer performances. In this paper, various cooling architectures are studied and the amplitude and the space distribution of the heat loads are taken into account. [...]
2018 - 11 p. - Published in : Cryogenics 95 (2018) 36-46

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2018-11-16
06:28
Observed proton beam induced disruption of a tungsten powder sample at CERN / Davenne, T (Rutherford) ; Loveridge, P (Rutherford) ; Bingham, R (Rutherford ; Strathclyde U.) ; Wark, J (University Coll. London) ; Back, J  J (Warwick U.) ; Caretta, O (Rutherford) ; Densham, C (Rutherford) ; O'Dell, J (Rutherford) ; Wilcox, D (Rutherford) ; Fitton, M (Rutherford)
Fluidized tungsten powder has been proposed as a potential target technology for particle accelerator applications with very high power highly focused pulsed beams. This has motivated a series of experiments carried out at the HiRadMat facility at CERN to study the response of a tungsten powder sample to an impinging high energy proton beam pulse. [...]
2018 - 14 p. - Published in : Phys. Rev. Accel. Beams 21 (2018) 073002 Fulltext: PDF;

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2018-11-14
06:23
Dose gradient assessment at the new CERN CHARM irradiation facility / Infantino, A (CERN) ; Cangialosi, C (CERN) ; Krawina, M (CERN) ; Brucoli, M (CERN) ; Brugger, M (CERN) ; De Carvalho Saraiva, J P (CERN) ; Danzeca, S (CERN)
CERN CHARM facility provides a unique complex radiation environment characterized by particle energy spectra representative of high-energy accelerators, ground and atmospheric conditions and space applications. [...]

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2018-11-06
09:27
First storage experiment at 270 GeV and observations of single bunch storage (9 June 1978) / Gareyte, Jacques (CERN) ; Kuhn, H K (CERN) ; Linnecar, T (CERN) ; Mills, W (CERN) ; Pahud, J D (CERN) ; Thomas, D (CERN) ; Wilson, Edmund J N (CERN)
CERN-SPS-Improvement-Report-141.
- 1978. - 8 p.
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2018-11-06
06:56
Measurements of Electromagnetic Properties of Ferrites as a Function of Frequency and Temperature / Chmielinska, Agnieszka (CERN ; Ecole Polytechnique, Lausanne) ; Barnes, Michael (CERN) ; Caspers, Fritz (CERN) ; Popovic, Branko (CERN) ; Vollinger, Christine (CERN)
Fast kicker magnets are used to inject beam into and extract beam out of the CERN accelerator rings. These kickers are often ferrite loaded transmission line type magnets with a rectangular shaped aperture through which the beam passes. [...]
2018 - 7 p. - Published in : (2018) , pp. WEPMF089
- Published in : J. Phys. : Conf. Ser.: 1067 (2018) , no. 8, pp. 082018 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMF089

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2018-11-06
06:56
Impact of a Wideband Feedback Prototype System on TMCI in the SPS / Höfle, Wolfgang (CERN) ; Bartosik, Hannes (CERN) ; Bjørsvik, Endre (CERN) ; Dusatko, John (SLAC) ; Fox, John (SLAC) ; Kotzian, Gerd (CERN) ; Levens, Thomas (CERN) ; Li, Kevin (CERN) ; Rivetta, Claudio (SLAC) ; Turgut, Ozhan (Stanford U.)
The transverse mode coupling instability (TMCI) in the SPS has been identified as one of the potential performance limitations for future high intensity LHC beams that will be required for the High Luminosity (HL)-LHC era and is being addressed by the LHC Injector Upgrade Project (LIU). A potential mitigation can be provided by wideband feedback systems with a frequency reach of about 1 GHz . [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-TUZGBD4 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.TUZGBD4

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2018-11-06
06:56
Control of Intra-Bunch Vertical Motion in the SPS with GHz Bandwidth Feedback / Fox, John (SLAC) ; Bartosik, Hannes (CERN) ; Bjørsvik, Endre (CERN) ; De Santis, Stefano (LBNL, Berkeley) ; Dusatko, John (SLAC) ; Höfle, Wolfgang (CERN) ; Kotzian, Gerd (CERN) ; Li, Kevin (CERN) ; Métral, Elias (CERN) ; Rivetta, Claudio (SLAC) et al.
A GHz bandwidth vertical beam feedback system has been in development at the CERN SPS for control of unstable vertical beam motion in single bunch and bunch train configurations. We present measurements and recent studies of stable and unstable motion for intensities up to 2 × 1011 p/bunch[1]. [...]
2018 - 6 p. - Published in : (2018) , pp. WEPAL079
- Published in : J. Phys. : Conf. Ser.: 1067 (2018) , no. 7, pp. 072024 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAL079

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2018-11-06
06:56
Transverse Feedback System for the CERN FCC-hh Collider / Höfle, Wolfgang (CERN) ; Komppula, Jani (CERN) ; Kotzian, Gerd (CERN) ; Li, Kevin (CERN) ; Valuch, Daniel (CERN)
For the future hadron Collider (FCC-hh) being studied at CERN a strong transverse feedback system is required to damp coupled bunch instabilities. This system is also planned to be used for injection damping. [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-WEPAF072 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPAF072

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2018-11-06
06:56
Improvement of the Longitudinal Beam Transfer from PS to SPS at CERN / Lasheen, Alexandre (CERN) ; Damerau, Heiko (CERN) ; Repond, Joël (CERN) ; Schwarz, Markus (CERN) ; Shaposhnikova, Elena (CERN)
The beam transfer from the Proton Synchrotron (PS) to the Super Proton Synchrotron (SPS) at CERN is a critical process for the production of beams for the Large Hadron Collider (LHC). A bunch-to-bucket transfer is performed with the main drawback that the rf frequency in the SPS (200 MHz) is five times higher than the one in the PS (40 MHz). [...]
2018 - 4 p. - Published in : 10.18429/JACoW-IPAC2018-THPAF042 Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAF042

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