CERN Accelerating science

SPS and CNGS

Последние добавления:
2017-10-18
06:37
Characterization of Shielding for the CERN-SPS Vacuum Flanges With Respect to Beam Coupling Impedance / Kaltenbacher, Thomas (CERN) ; Vollinger, Christine (CERN)
Longitudinal multi-bunch instabilities in the CERN-SPS pose a serious limitation for future beam intensities required for high luminosity LHC. Hence, an impedance model for the SPS accelerator was developed from which one group of vacuum flanges could be identified as being a major culprit for these instabilities. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-WEPIK090 Fulltext: PDF;

Подробная запись - Подобные записи
2017-10-18
06:37
Automatic Local Aperture Measurements in the SPS / Kain, Verena (CERN) ; Bartosik, Hannes (CERN) ; Cettour Cave, Stephane (CERN) ; Cornelis, Karel (CERN) ; Velotti, Francesco (CERN)
The CERN SPS (Super Proton Synchrotron) serves as LHC injector and provides beam for the North Area fixed target experiments. It is equipped with flat vacuum chambers to accommodate the large horizontal beam size required during transition crossing and slow extraction. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-THPAB147 Fulltext: PDF;

Подробная запись - Подобные записи
2017-10-18
06:37
New Features of the 2017 SixTrack Release / Sjobak, Kyrre (CERN) ; Barranco García, Javier (CERN) ; De Maria, Riccardo (CERN) ; Fitterer, Miriam (Fermilab) ; Gupta, Vikas (IISER, Kolkata) ; McIntosh, Eric (CERN) ; Mereghetti, Alessio (CERN) ; Molson, James (Orsay, LAL)
The SixTrack particle tracking code is routinely used to simulate particle trajectories in high energy circular machines like the LHC and FCC, and is deployed for massive simulation campaigns on CERN clusters and on the BOINC platform within the LHC@Home volunteering computing project. The 2017 release brings many upgrades that improve flexibility, performance, and accuracy. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-THPAB047 Fulltext: PDF;

Подробная запись - Подобные записи
2017-10-18
06:37
Decomposition of Beam Losses at LHC / Salvachua, Belen (CERN) ; Mirarchi, Daniele (CERN) ; Pojer, Mirko (CERN) ; Redaelli, Stefano (CERN) ; Rossi, Roberto (CERN) ; Valentino, Gianluca (CERN) ; Wyszynski, Michal (CERN)
The LHC collimation system provides betatron cleaning and off-momentum cleaning in two different locations of the LHC ring. In the betatron cleaning area, three primary collimators cut the primary halo in horizontal, vertical and skew planes. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPAB009 Fulltext: PDF;

Подробная запись - Подобные записи
2017-10-18
06:37
SPS Slow Extracted Spill Quality During the 2016 Run / Kain, Verena (CERN) ; Bauche, Jeremie (CERN) ; Catherine, Pascal (CERN) ; Cornelis, Karel (CERN) ; Fraser, Matthew (CERN) ; Gatignon, Laurent (CERN) ; Genton, Charles-Mathieu (CERN) ; Goddard, Brennan (CERN) ; Kahle, Karsten (CERN) ; Magrans de Abril, Marc (CERN) et al.
The flux of particles slow extracted with the 1/3 integer resonance from the Super Proton Synchrotron at CERN should ideally be constant over the length of the extraction plateau, for optimum use of the beam by the fixed target experiments. The extracted intensity is controlled in feed-forward correction of the horizontal tune via the main SPS quadrupoles. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPIK049 Fulltext: PDF;

Подробная запись - Подобные записи
2017-10-18
06:37
Phase Space Folding Studies for Beam Loss Reduction During Resonant Slow Extraction at the CERN SPS / Stoel, Linda (CERN) ; Benedikt, Michael (CERN) ; Cornelis, Karel (CERN) ; Fraser, Matthew (CERN) ; Goddard, Brennan (CERN) ; Kain, Verena (CERN) ; Velotti, Francesco (CERN)
The requested number of protons slow-extracted from the CERN Super Proton Synchrotron (SPS) for Fixed Target (FT) physics is expected to continue increasing in the coming years, especially if the proposed SPS Beam Dump Facility is realised. Limits on the extracted intensity are already being considered to mitigate the dose to personnel during interventions required to maintain the extraction equipment, especially the electrostatic extraction septum. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPIK046 Fulltext: PDF;

Подробная запись - Подобные записи
2017-10-18
06:37
SPS Slow Extraction Losses and Activation: Challenges and Possibilities for Improvement / Fraser, Matthew (CERN) ; Balhan, Bruno (CERN) ; Bartosik, Hannes (CERN) ; Bertone, Caterina (CERN) ; Björkman, Daniel (CERN) ; Borburgh, Jan (CERN) ; Conan, Nadine (CERN) ; Cornelis, Karel (CERN) ; Garcia Alia, Ruben (CERN) ; Gatignon, Laurent (CERN) et al.
In 2015 the highest integrated number of protons in the history of the North Area was slow extracted from the CERN Super Proton Synchrotron (SPS) for the Fixed Target physics programme. At well over 1.10¹⁹ protons on target (POT), this represented the highest annual figure at SPS for almost two decades, since the West Area Neutrino Facility was operational some 20 years ago. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPIK045 Fulltext: PDF;

Подробная запись - Подобные записи
2017-10-18
06:37
The Use of a Passive Scatterer for SPS Slow Extraction Beam Loss Reduction / Goddard, Brennan (CERN) ; Balhan, Bruno (CERN) ; Borburgh, Jan (CERN) ; Fraser, Matthew (CERN) ; Stoel, Linda (CERN) ; Velotti, Francesco (CERN)
A significant reduction in the fraction of protons lost on the SPS electrostatic septum ES during resonant slow extraction is highly desirable for present Fixed-Target beam operation, and will become mandatory for the proposed SHiP experiment, which is now being studied in the framework of CERN's Physics Beyond Colliders program. In this paper the possible use of a passive scattering device (diffuser) is investigated. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPIK044 Fulltext: PDF;

Подробная запись - Подобные записи
2017-10-18
06:37
Beam-Based Kicker Waveform Measurements Using Long Bunches / Forte, Vincenzo (CERN) ; Bartmann, Wolfgang (CERN) ; Borburgh, Jan (CERN) ; Fraser, Matthew (CERN) ; Sermeus, Luc (CERN)
The increased bunch length demanded by the LHC Injectors Upgrade (LIU) project to mitigate emittance growth from space-charge on the PS injection plateau puts strong constraints on the rise-times of the recombination kickers in the transfer lines between the CERN Proton Synchrotron Booster (PSB) and the Proton Synchrotron (PS). A beam-based technique has been developed to validate the waveforms of the recombination kickers. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPIK042 Fulltext: PDF;

Подробная запись - Подобные записи
2017-10-18
06:37
Beam Instrumentation for the CERN LINAC4 and PSB Half Sector Test / Roncarolo, Federico (CERN) ; Allica Santamaria, Juan (CERN) ; Bozzolan, Michele (CERN) ; Bracco, Chiara (CERN) ; Burger, Stephane (CERN) ; Focker, Gerrit Jan (CERN) ; Guidoboni, Greta (CERN) ; Hofmann, Thomas (Royal Holloway, U. of London) ; Jensen, Lars (CERN) ; Mikulec, Bettina (CERN) et al.
The construction, installation and initial commissioning of CERN's LINAC4 was completed in 2016 with H⁻ ions successfully accelerated to its top energy of 160 MeV. The accelerator is equipped with a large number of beam diagnostic systems that are essential to monitor, control and optimize the beam parameters. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPAB120 Fulltext: PDF;

Подробная запись - Подобные записи