CERN Accelerating science

SPS and CNGS

Letzte Einträge:
2019-09-21
06:01
Beam impact experiment of 440GeV/p protons on superconducting wires and tapes in a cryogenic environment / Will, Andreas (KIT, Karlsruhe ; CERN) ; Bastian, Yan (CERN) ; Bernhard, Axel (KIT, Karlsruhe) ; Bonura, Marco (U. Geneva (main)) ; Bordini, Bernardo (CERN) ; Bortot, Lorenzo (CERN) ; Favre, Mathieu (CERN) ; Lindstrom, Bjorn (CERN) ; Mentink, Matthijs (CERN) ; Monteuuis, Arnaud (CERN) et al.
The superconducting magnets used in high energy particle accelerators such as CERN’s LHC can be impacted by the circulating beam in case of specific failure cases. This leads to interaction of the beam particles with the magnet components, like the superconducting coils, directly or via secondary particle showers. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-THPTS066 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THPTS066

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2019-09-21
06:01
Alternative proposal for FCC-hh extraction septa / Sanz Ull, Alejandro (CERN ; Eindhoven, Tech. U.) ; Atanasov, Miroslav (CERN) ; Balhan, Bruno (CERN) ; Borburgh, Jan (CERN)
Challenging requirements are set for the FCC extraction septa magnets, notably for the magnetic field level, the septum thickness and the leak field. An alternative to the baseline FCC extraction layout is proposed, consisting of a Superconducting Shield (SuShi) stage and a Truncated Cosine $\theta $ (TCT) septa stage with the aim of reducing the required number of septa and installed length. [...]
2019 - 4 p. - Published in : 10.18429/JACoW-IPAC2019-THPTS062 Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THPTS062

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2019-09-20
13:36
TT20 beam loss reduction / Tat, Duy-Martin (University of Oxford)
The beam losses at the TT20 beam splitter are studied and different schemes for reducing these losses are performed. [...]
CERN-STUDENTS-Note-2019-219.
- 2019.
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2019-09-19
16:25
A VdM Sequence File Web Application / Hickman, Thomas Kendall ; Marqversen, Frederik Kofoed ; Calia, Andrea (CERN) ; Hostettler, Michi (CERN)
To perform Van der Meer scans at the LHC, the experimental collaborations have to supply a text file containing a command sequence specifying the beam positions required. [...]
CERN-ACC-NOTE-2019-0038.
- 2019.

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2019-09-19
09:30
A VdM Sequence File Web Application (report) / Marqversen, Frederik Kofoed ; Hickman, Thomas Kendall
To perform Van der Meer scans at the LHC, the experimental collaborations have to supply a text file containing a command sequence specifying the beam positions required. [...]
CERN-STUDENTS-Note-2019-210.
- 2019.
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2019-09-17
07:01
Dynamic Response of Advanced Materials Impacted by Particle Beams: The MultiMat Experiment / Pasquali, M (CERN) ; Bertarelli, A (CERN) ; Accettura, C (CERN ; Milan Polytechnic) ; Berthome, E (CERN) ; Bianchi, L (CERN) ; Bolz, P (Darmstadt, GSI) ; Carra, F (CERN) ; Fichera, C (BIAM, St Paul lez Durance) ; Frankl, M I (CERN) ; Furness, T (Huddersfield U.) et al.
The introduction at CERN of new extremely energetic particle accelerators, such as the high-luminosity large hadron collider (HL-LHC) or the proposed future circular collider (FCC), will increase the energy stored in the circulating particle beams by almost a factor of two (from 360 to 680 MJ) and of more than 20 (up to 8500 MJ), respectively. In this scenario, it is paramount to assess the dynamic thermomechanical response of materials presently used, or being developed for future use, in beam intercepting devices (such as collimators, targets, dumps, absorbers, spoilers, windows, etc.) exposed to potentially destructive events caused by the impact of energetic particle beams. [...]
publ - 30 p. - Published in : Journal of Dynamic Behavior of Materials 5 (2019) 266-295 External link: Fulltext from publisher

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2019-09-17
07:00
Multiobjective genetic algorithm approach to optimize beam matching and beam transport in high-intensity hadron linacs / Yarmohammadi Satri, M (CERN ; IPM, Tehran) ; Lombardi, A M (CERN) ; Zimmermann, F (CERN)
In this article we demonstrate how a multiobjective genetic algorithm, like the nondominated sorting genetic algorithm II (NSGAII), and a selection tool, like the technique for order preference by similarity to ideal solution (TOPSIS), can be employed for beam matching and for optimizing the beam transport in the low and medium energy section of a modern hadron linac including space charge effect. Combining NSGAII with the particle tracking code TRAVEL v4.07, we determine the Pareto optimal front, and then apply TOPSIS for the final selection using the example of the 160 MeV H$^−$ LINAC4 at CERN. [...]
2019 - 10 p. - Published in : Phys. Rev. Accel. Beams 22 (2019) 054201 Fulltext from Publisher: PDF;

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2019-09-17
07:00
Channeling and volume reflection of high-energy charged particles in short bent crystals. Crystal assisted collimation of the accelerator beam halo / Scandale, W (CERN) ; Taratin, A M (Dubna, JINR)
The experimental studies of high-energy charged particle deflection due to planar and axial channeling as well as volume reflection and multi volume reflections in short bent crystals at the extracted beams of the CERN Super Proton Synchrotron (SPS) are considered. The experiments on the studies of crystal assisted collimation of the CERN SPS beam halo and the first similar experiment with the CERN Large Hadron Collider (LHC) beam of 6500 GeV/c protons are also considered..
2019 - 107 p. - Published in : Phys. Rep. 815 (2019) 1-107

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2019-09-16
16:36
Cryogenic Hear and Masse Transfer Conference - CHMT 2019   4 - 5 Nov 2019  - Enschede, Netherlands  .-
2019 Conference home page

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2019-09-12
09:23
Noninvasive 3D field mapping of complex static electric fields / Kainz, Andreas (TU Vienna) ; Keplinger, Franz (TU Vienna) ; Hortschitz, Wilfried (Danube U., Krems) ; Kahr, Matthias (Danube U., Krems) ; Steiner, Harald (Danube U., Krems) ; Stifter, Michael (Danube U., Krems) ; Hunt, James R (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Resta-Lopez, Javier (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Rodin, Volodymyr (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Welsch, Carsten P (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) et al.
Many upcoming experiments in antimatter research require low-energy antiproton beams. With a kinetic energy in the order of 100 keV, the standard magnetic components to control and focus the beams become less effective. [...]
2019 - 6 p. - Published in : Phys. Rev. Lett. 122 (2019) 244801 Article from SCOAP3: PDF;

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