|
1.
|
FOCUS: fast Monte Carlo approach to coherence of undulator sources
/ Siano, M (Milan U. ; INFN, Milan) ; Geloni, G (European XFEL, Hamburg) ; Paroli, B (Milan U. ; INFN, Milan) ; Butti, D (CERN) ; Lefèvre, T (CERN) ; Mazzoni, S (CERN) ; Trad, G (CERN) ; Iriso, U (CELLS - ALBA, LLS) ; Nosych, A A (CELLS - ALBA, LLS) ; Torino, L (CELLS - ALBA, LLS) et al.
FOCUS (Fast Monte CarlO approach to Coherence of Undulator Sources) is a new GPU-based simulation code to compute the transverse coherence of undulator radiation from ultra-relativistic electrons. The core structure of the code, which is written in the language C++ accelerated with CUDA, combines an analytical description of the emitted electric fields and massively parallel computations on GPUs. [...]
2023 - 10 p.
- Published in : J. Synchrotron Radiat. 30 (2023) 217-226
Fulltext: PDF;
|
|
|
2.
|
CERN’s beam instrumentation R&D; study for FCC-ee
/ Mazzoni, S (CERN) ; Schloegelhofer, A (CERN ; Vienna U.) ; Nosych, A A (CELLS - ALBA, LLS) ; Muller, A -S (KIT, Karlsruhe) ; Haerer, B (KIT, Karlsruhe) ; Paroli, B (Milan U.) ; Butti, D (CERN) ; Howling, E (CERN ; Oxford U.) ; Trad, G (CERN) ; Niehues, G (KIT, Karlsruhe) et al.
The Future Circular Collider (FCC) R&D; study was started in 2021 as a comprehensive feasibility analysis of CERN’s future accelerator project encompassing technical, administrative and financial aspects. As part of the study, Beam Instrumentation (BI) is a key technical infrastructure that will have to face unprecedented challenges. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPL088
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPL088
|
|
|
3.
|
Two-Dimensional Beam Size Measurements with X-Ray Heterodyne Near Field Speckles
/ Siano, Mirko (Milan U.) ; Butti, Daniele (CERN) ; Goetz, Alexander (CERN) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Nosych, Andriy A (CELLS - ALBA, LLS) ; Paroli, Bruno (Milan U.) ; Potenza, Marco A C (Milan U.) ; Solano, Eduardo (CELLS - ALBA, LLS) et al.
We report on 2D beam size measurements with a novel interferometric technique named Heterodyne Near Field Speckles, capable of resolving few-micrometer beam sizes. It relies on the interference between the weak spherical waves scattered by a colloidal suspension and the intense transilluminating X-ray beam. [...]
JACoW, 2021 - 4 p.
- Published in : JACoW IBIC 2021 (2021) 176-179
Fulltext: PDF;
In : 10th International Beam Instrumentation Conference (IBIC 2021), Online, Korea, 13 - 17 Sep 2021, pp.176-179
|
|
|
4.
|
Two-dimensional electron beam size measurements with x-ray heterodyne near field speckles
/ Siano, M (Milan U. ; INFN, Milan) ; Paroli, B (Milan U. ; INFN, Milan) ; Potenza, M A C (Milan U. ; INFN, Milan) ; Teruzzi, L (Milan U. ; INFN, Milan) ; Iriso, U (CELLS - ALBA, LLS) ; Nosych, A A (CELLS - ALBA, LLS) ; Solano, E (CELLS - ALBA, LLS) ; Torino, L (CELLS - ALBA, LLS) ; Butti, D (CERN) ; Goetz, A (CERN) et al.
In this paper we report on recent two-dimensional (2D) electron beam size measurements with a nonconventional synchrotron radiation interferometric technique based on x-ray heterodyne near field speckles (HNFS). The method relies on Fourier analysis of the random speckle patterns generated by a water suspension of nanospheres to assess the full 2D transverse coherence of the incoming x rays. [...]
2022 - 12 p.
- Published in : Phys. Rev. Accel. Beams 25 (2022) 052801
Fulltext: PDF;
|
|
|
5.
|
What you get? Transverse and Longitudinal Distributions
/ Roncarolo, F (CERN) ; Andreazza, W (CERN) ; Bart-Pedersen, S (CERN) ; Boccardi, A (CERN) ; Bravin, E (CERN) ; Dehning, B (CERN) ; Emery, J (CERN) ; Goldblatt, A (CERN) ; Gras, J-J (CERN) ; Guerrero, A (CERN) et al.
The transverse beam emittances of the LHC proton and ion beams can be inferred
by measuring the beam sizes with Wire Scanner (WS), Synchrotron Radiation (BSRT)
and Beam Gas Ionization (BGI) monitors. The Abort Gap Monitor (AGM) and the
Longitudinal Density Monitor (LDM) are used to characterize the longitudinal
distributions. [...]
Geneva : CERN, 2012 - 6 p.
- Published in : (2012) , pp. 53-58
Fulltext: PDF;
In : 4th Evian Workshop on LHC beam operation, Evian-les-Bains, France, 17 - 20 Dec 2012, pp.53-58
|
|
|
6.
|
"What You Get" - Orbit and tune measurements and feedback
/ Andersen, M (CERN) ; Boccard, C (CERN) ; Bozyigit, S (CERN) ; Calvo, E (CERN) ; Favier, M (CERN) ; Fullerton, J (CERN) ; Gasior, M (CERN) ; Jackson, S (CERN) ; Jensen, L (CERN) ; Jones, R (CERN) et al.
The Large Hadron Collider (LHC) has now been operated successfully for 3 years relying on the good performance of its beam instrumentation, including position and tune monitors and their respective feedback systems. This contribution gives an overview of the performance and limitations of the current orbit and tune systems. [...]
Geneva : CERN, 2012 - 6 p.
- Published in : (2012) , pp. 47-52
Fulltext: PDF;
In : 4th Evian Workshop on LHC beam operation, Evian-les-Bains, France, 17 - 20 Dec 2012, pp.47-52
|
|
|
7.
|
Beam induced RF heating
/ Salvant, B (CERN) ; Aberle, O (CERN) ; Arduini, G (CERN) ; Assmann, R (CERN) ; Baglin, V (CERN) ; Barnes, M J (CERN) ; Bartmann, W (CERN) ; Baudrenghien, P (CERN) ; Berrig, O (CERN) ; Bracco, C (CERN) et al.
After the 2011 run, actions were put in place during the 2011/2012 winter stop to limit beam induced radio frequency (RF) heating of LHC components. However, some components could not be changed during this short stop and continued to represent a limitation throughout 2012. [...]
Geneva : CERN, 2012 - 10 p.
- Published in : (2012) , pp. 109-118
Fulltext: PDF;
In : 4th Evian Workshop on LHC beam operation, Evian-les-Bains, France, 17 - 20 Dec 2012, pp.109-118
|
|
|
8.
|
|
|
9.
|
Beam feasibility study of a collimator with in-jaw beam position monitors
/ Wollmann, Daniel (CERN) ; Nosych, Andriy A (CERN ; Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Valentino, Gianluca (CERN) ; Aberle, Oliver (CERN) ; Aßmann, Ralph W (CERN) ; Bertarelli, Alessandro (CERN) ; Boccard, Christian (CERN) ; Bruce, Roderik (CERN) ; Burkart, Florian (CERN) ; Calvo, Eva (CERN) et al.
At present, the beam-based alignment of the LHC collimators is performed by touching the beam halo with both jaws of each collimator. This method requires dedicated fills at low intensities that are done infrequently and makes this procedure time consuming. [...]
2014 - 7 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 768 (2014) 62-68
Elsevier Open Access article: PDF;
|
|
|
10.
|
Development and Beam Tests of an Automatic Algorithm for Alignment of LHC Collimators with Embedded BPMs
/ Valentino, G (CERN ; Malta U.) ; Bruce, R (CERN) ; Gasior, M (CERN) ; Mirarchi, D (CERN) ; Nosych, A A (CERN) ; Redaelli, S (CERN) ; Salvachua, B (CERN) ; Assmann, R W (DESY) ; Sammut, N (Malta U.)
Collimators with embedded Beam Position Monitor (BPM) buttons will be installed in the LHC during the upcoming long shutdown period. During the subsequent operation, the BPMs will allow the collimator jaws to be kept centered around the beam trajectory. [...]
CERN-ACC-2013-0123.-
Geneva : CERN, 2013 - 3 p.
Fulltext: PDF;
In : 4th International Particle Accelerator Conference, Shanghai, China, 12 - 17 May 2013, pp.3439
|
|
epost-alarm
eller starta en prenumeration på 
RSS-strömmen.