CERN Accelerating science

SPS and CNGS

新增:
2019-10-18
06:27
Crystal for slow extraction loss-reduction of the SPS electrostatic septum / Esposito, Luigi Salvatore (CERN) ; Addesa, Francesca (INFN, Rome) ; Afonin, Alexander (Serpukhov, IHEP) ; Bestman, Patrick (CERN) ; Borg, Johan (Imperial Coll., London) ; Butcher, Mark (CERN) ; Calviani, Marco (CERN) ; Chesnokov, Yuri (Serpukhov, IHEP) ; Denisov, Alexander (St. Petersburg, INP) ; Di Castro, Mario (CERN) et al.
The use of a bent crystal was investigated in order to reduce the losses at the CERN Super Proton Synchrotron (SPS) electrostatic septum (ZS) during the slow extraction of 400 GeV/c protons toward the North Area. The crystal, installed a few meters upstream of the ZS, bends protons that would otherwise impinge on the ZS wires. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPMP028 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP028

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2019-10-18
06:27
Update on beam transfer line design for the SPS Beam Dump Facility / Dutheil, Yann (CERN) ; Bauche, Jeremie ; Dougherty, Liam (CERN) ; Fraser, Matthew ; Goddard, Brennan (CERN) ; Heßler, Christoph (CERN) ; Kain, Verena ; Kurdej, Jakub (CERN) ; Uythoven, Jan (CERN) ; Velotti, Francesco (CERN)
The SPS Beam Dump Facility (BDF) being studied as part of the Physics Beyond Colliders (PBC) CERN project has recently reached an important milestone with the completion of the comprehensive feasibility study. The BDF is a proposed fixed target facility to be installed in the SPS North Area, to accommodate experiments such as SHiP (Search for Hidden Particles), which is most notably aiming at studying hidden sector particles. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPMP027 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP027

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2019-10-18
06:27
Emittance dilution from the CERN Proton Synchrotron Booster’s extraction kickers / Fraser, Matthew (CERN) ; Albright, Simon (CERN) ; Antoniou, Fanouria (CERN) ; Di Giovanni, Gian Piero (CERN) ; Dutheil, Yann (CERN) ; Forte, Vincenzo (CERN) ; Huschauer, Alexander (CERN) ; Roncarolo, Federico (CERN)
Understanding the different sources of emittance dilution along the LHC injector chain is an important part of providing the high brightness proton beams demanded by the LHC Injectors Upgrade (LIU) project. In this context, the first beam-based measurements of the magnetic waveforms of the Proton Synchrotron Booster’s (PSB) extraction kickers were carried out and used to quantify the transverse emittance blow-up during extraction and transfer to the Proton Synchrotron (PS). [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPMP026 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP026

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2019-10-18
06:27
Matching studies between CERN PSB and PS through multi-turn beam profile acquisitions / Fraser, Matthew (CERN) ; Dutheil, Yann (CERN) ; Forte, Vincenzo (CERN) ; Guerrero, Ana (CERN) ; Huschauer, Alexander (CERN) ; Oeftiger, Adrian (CERN) ; Ogur, Salim (CERN) ; Roncarolo, Federico (CERN) ; Senes, Eugenio (CERN) ; Tecker, Frank (CERN)
In the framework of the LHC Injectors Upgrade (LIU) project, the investigation and quantification of the optics mismatch between the CERN Proton Synchrotron Booster (PSB) and PS is a crucial step in understanding the source of horizontal emittance growth between the two machines. Extensive studies were carried out to estimate the mismatch from single-pass measurements in the transfer line and to rematch the transfer line to reduce the dispersive mismatch at PS injection while keeping the betatron matching unaltered. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPMP025 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP025

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2019-10-18
06:27
Alternative material choices to reduce activation of extraction equipment / Björkman, Daniel (CERN) ; Balhan, Bruno (CERN) ; Borburgh, Jan (CERN) ; Esposito, Luigi Salvatore (CERN) ; Fraser, Matthew (CERN) ; Goddard, Brennan (CERN) ; Stoel, Linda (CERN) ; Vincke, Helmut (CERN)
At CERN, the Super Proton Synchrotron (SPS) is equipped with a resonant slow extraction system in Long Straight Section 2 (LSS2) towards the fixed target (FT) beam lines in the North Area. The extraction region provides the physics experiments with a quasi-DC flux of high-energy protons over a few seconds, which corresponds to tens of thousands of turns. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEPMP024 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP024

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2019-10-18
06:27
First experimental measurements of the caustic nature of trajectories in bunch compressors / Charles, Tessa (CERN ; Melbourne U.) ; Björklund Svensson, Jonas (Lund U.) ; Latina, Andrea (CERN) ; Thorin, Sara (Lund U., MAX-lab)
Advancements in the theory describing density perturbations in accelerated charge particle beams, known as caustics, has been gathering interest over the past few years. This proceeding describes the first experimental measurements of the caustic nature of charged particle trajectories in a particle accelerator. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-WEYYPLS2 Fulltext: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEYYPLS2

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2019-10-18
06:27
Results on the FCC-hh beam screen sawtooth at the KIT electron storage ring KARA / Gonzalez, Luis (CERN) ; Baglin, Vincent (CERN) ; Bellafont, Ignasi (CELLS - ALBA, LLS) ; Casalbuoni, Sara (KIT, Karlsruhe) ; Chiggiato, Paolo (CERN) ; Garion, Cedric (CERN) ; Huttel, Erhard (KIT, Karlsruhe) ; Kersevan, Roberto (CERN) ; Pérez, Francis (CELLS - ALBA, LLS)
In the framework of the EuroCirCol collaboration [1] (work package 4 "Cryogenic Beam Vacuum System"), the fabrication of the FCC-hh beam screen (BS) prototype has been carried out with the aim of testing it at room temperature on the Karlsruhe Institute of Technology (KIT) 2.5 GeV electron storage ring KARA (KArlsruhe Research Accelerator) light source. The BS prototype was tested on a beamline installed by the collaboration, named as BEam Screen TEstbench EXperiment (BESTEX). [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-TUPMP036 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.TUPMP036

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2019-10-18
06:27
Singularities of particle trajectory caustics and beam shaping in bunch compressors / Charles, T K (CERN ; Melbourne U.) ; Paganin, D M (Monash U.) ; Boland, M J (Saskatchewan U.) ; Dowd, R T (Australia, CSIRO, Clayton)
Caustics are a common occurrence in optics, describing the bright lines seen in a well-lit coffee cup or the dancing networks of light seen at the bottom of a swimming pool on a sunny day. Recently, caustic formation in electron trajectories was identified as the mechanism driving strong current modulations in accelerated charged-particle beams. [...]
2019 - 12 p. - Published in : 10.1142/9789813279612_0008 Fulltext from publisher: PDF;
In : Nonlinear Dynamics and Collective Effects in Particle Beam Physics, Arcidosso, Italy, 19 - 22 Sep 2017, pp.103-114

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2019-10-17
09:58
Enceinte du compteur Cerenkov C3 de l'expérience NA3 : Spécification technique
CERN-SPS-EBP-Spec-78-15.
- 1978. - 7 p.
Full text

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2019-10-17
06:46
Developments towards the delivery of selenium ion beams at ISOLDE / Chrysalidis, K (CERN ; Mainz U., Inst. Phys.) ; Ballof, J (CERN ; Mainz U., Inst. Kernchem.) ; Düllmann, Ch E (Mainz U., Inst. Kernchem. ; Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Fedosseev, V N (CERN) ; Granados, C (CERN) ; Marsh, B A (CERN) ; Martinez Palenzuela, Y (CERN ; Leuven U.) ; Ramos, J P (CERN) ; Rothe, S (CERN) ; Stora, T (CERN) et al.
The production of selenium ion beams has been investigated at the CERN-ISOLDE facility via two different ionization methods. Whilst molecular selenium (SeCO) beams were produced at ISOLDE since the early 1990s, recent attempts at reliably reproducing these results have so far been unsuccessful. [...]
2019 - Published in : Eur. Phys. J. A 55 (2019) 173 Fulltext: PDF;

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