CERN Accelerating science

Accelerator Physics

Latest additions:
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;

Detailed record - Similar records
2017-10-18
06:37
Online Bunch by Bunch Transverse Instability Detection in LHC / Söderén, Martin (CERN) ; Kotzian, Gerd (CERN) ; Ojeda Sandonís, Miguel (CERN) ; Valuch, Daniel (CERN)
Reliable detection of developing transverse instabilities in the Large Hadron Collider is one of the main operational challenges of the LHC's high intensity proton run. A full machine snapshot provided from the moment of instability is a crucial input to develop and fine tune instability models. [...]
2017 - 3 p. - Published in : 10.18429/JACoW-IPAC2017-MOPAB117 Fulltext: PDF;

Detailed record - Similar records
2017-10-18
06:37
Transverse Beam Phase-Space Measurement Experience at CTF3 / Gamba, Davide (CERN) ; Constance, Ben (CERN) ; Corsini, Roberto (CERN) ; Döbert, Steffen (CERN) ; Malina, Lukas (CERN) ; Martin, Lucy (JAI, UK) ; Peirson Serratosa, Abel (Oxford U.) ; Persson, Tobias (CERN) ; Roberts, Jack (CERN) ; Rollings, Alexandra (CERN) et al.
One of the objective of the CLIC Test Facility (CTF3) at CERN is to demonstrate the CLIC Drive Beam Recombination concept. An accurate control of the transverse beam parameters is necessary in order to succeed in preserving the beam quality after the recombination. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPAB115 Fulltext: PDF;

Detailed record - Similar records
2017-10-18
06:37
Usage of the Transverse Damper Observation Box for High Sampling Rate Transverse Position Data in the LHC / Carver, Lee (CERN) ; Buffat, Xavier (CERN) ; Butterworth, Andrew (CERN) ; Höfle, Wolfgang (CERN) ; Iadarola, Giovanni (CERN) ; Kotzian, Gerd (CERN) ; Li, Kevin (CERN) ; Métral, Elias (CERN) ; Ojeda Sandonís, Miguel (CERN) ; Söderén, Martin (CERN) et al.
The transverse damper observation box (ADTObsBox) is a device that makes accessible the bunch-by-bunch turn-by-turn data recorded from the pickups of the LHC transverse damper. This device can provide online transient analysis of different beam dynamics effects (tunes and damping times at injection, for example), while also under development is an online coherent instability triggering system. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPAB113 Fulltext: PDF;

Detailed record - Similar records
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;

Detailed record - Similar records
2017-10-18
06:37
Beam Delivery System Optimization for CLIC 380 GeV / Plassard, Fabien (CERN) ; Bambade, Philip (Orsay, LAL) ; Latina, Andrea (CERN) ; Marín, Eduardo (CERN) ; Schulte, Daniel (CERN) ; Tomás, Rogelio (CERN)
In the framework of the CLIC rebaselining, the Beam Delivery System (BDS) have been re-optimized for its initial stage at 380 GeV. Two BDS designs with L*=4.3 meters and L*=6 meters have been investigated. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-MOPIK100 Fulltext: PDF;

Detailed record - Similar records
2017-10-18
06:36
Studies on Luminous Region, Pile-up and Performance for HL-LHC Scenarios / Medina Medrano, Luis (CERN ; Unlisted, MX) ; Arduini, Gianluigi (CERN) ; Tomás, Rogelio (CERN)
Studies on luminous region and pile-up density are of great interest for the experiments at the future High Luminosity LHC (HL-LHC) in order to optimize the detector performance. The evolution of these parameters at the two main interaction points of the HL-LHC along optimum physics fills is studied for the baseline and alternative operational scenarios with the latest set of parameters, including a refined description of the longitudinal bunch profile. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-TUPIK089 Fulltext: PDF;

Detailed record - Similar records
2017-10-18
06:36
Phase Advance Interlocking Throughout the Whole LHC Cycle / Fuchsberger, Kajetan (CERN) ; Calia, Andrea (CERN) ; Galilée, Marc-Antoine (CERN) ; Hemelsoet, Georges-Henry (CERN) ; Hostettler, Michael (CERN) ; Jacquet, Delphine (CERN) ; Makai, Jozsef (CERN) ; Schaumann, Michaela (CERN)
Each beam of CERN's Large Hadron Collider (LHC) stores 360 MJ at design energy and design intensity. In the unlikely event of an asynchronous beam dump, not all particles would be extracted immediately. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-TUPIK087 Fulltext: PDF;

Detailed record - Similar records
2017-10-18
06:36
A Broadband Transverse Kicker Prototype for Intra-Bunch Feedback in the CERN SPS / Wendt, Manfred (CERN) ; Alonso Romero, Irene (CERN) ; Calvo, Sebastien (CERN) ; Höfle, Wolfgang (CERN) ; Jones, Owain Rhodri (CERN) ; Montesinos, Eric (CERN)
A transverse intra-bunch feedback system is currently under study at CERN for the SPS, to mitigate beam instabilities caused by electron clouds and coupled transverse modes (TMCI). This feedback system is designed for a bandwidth of 1 GHz, and based on a digital feedback controller and broadband power amplifiers. [...]
IPAC-2017-TUPIK053.- 2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-TUPIK053 Fulltext: PDF;

Detailed record - Similar records
2017-10-18
06:36
Macroparticle Simulation Studies of the LHC Beam Dynamics in the Presence of Electron Cloud / Romano, Annalisa (CERN) ; Iadarola, Giovanni (CERN) ; Li, Kevin (CERN) ; Rumolo, Giovanni (CERN)
Beam quality degradation caused by the Electron Cloud (EC) effects has been identified as one of the main performance limitations for the high intensity 25 ns beams in the Large Hadron Collider (LHC). When a proton bunch passes through an EC, electrons are attracted towards the transverse center of the beam resulting into an increasing electron density within the bunch. [...]
2017 - 4 p. - Published in : 10.18429/JACoW-IPAC2017-TUPVA018 Fulltext: PDF;

Detailed record - Similar records