|
1.
|
|
|
2.
|
Status of the LHC emittance diagnostics
/ Trad, G (CERN) ; Alexopoulos, A (CERN) ; Baud, G (CERN) ; Bravin, E (CERN) ; Roncarolo, F (CERN) ; Vlachos, S (CERN) ; Wurkner, B (CERN)
Measuring the beam transverse emittance is fundamental in every accelerator, in
particular for the LHC, where its precise determination and preservation is
essential to maximize the luminosity and thus the performance of the colliding
beams. In this contribution, a review of the status of the synchrotron radiation
monitors, the beam gas vertex detector and the wirescanners will be presented
alongside the assessment of the obtained performance [...]
2019 - 5 p.
- Published in : (2019) , pp. 147-151
Fulltext: PDF;
In : 8th Evian Workshop on LHC beam operation, Evian Les Bains, France, 12 - 14 Dec 2017, pp.147-151
|
|
|
3.
|
The Precision Laser Inclinometer
/ Di Girolamo, Beniamino (CERN) ; Boudagov, Julian A (Dubna, JINR) ; Lyablin, Michail V (Dubna, JINR) ; Vlachos, Sotiris (Natl. Tech. U., Athens)
Earth surface movements, like earthquakes or human-produced (cultural) noise, can induce a degradation of the instantaneous luminosity of particle accelerators or even sudden beam losses. In the same way the presence of seismic and cultural noise limits the detection capabilities of interferometric antennas used for the observations of gravitational waves. [...]
JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 3305-3308
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3305-3308
|
|
|
4.
|
LHC Emittance Measurements in Run 2
/ Trad, G (CERN) ; Alexopoulos, A (CERN) ; Bravin, E (CERN) ; Butti, D (CERN) ; Kieffer, R (CERN) ; Roncarolo, F (CERN) ; Vlachos, S (CERN) ; Wurkner, B (CERN)
Measuring the beam transverse emittance is fundamental in every accelerator, in
particular for the LHC, where its precise determination and its preservation is
essential to maximize the luminosity and thus the performance of the colliding
beams. In this contribution, a review of the status of the wirescanners, the
synchrotron radiation monitors, the beam gas vertex detector and the quadrupolar
moment measurement from the beam position monitors will be presented alongside
the assessment of the obtained performance. [...]
Geneva, Switzerland : , 2019 - 7 p.
- Published in : , pp. 117-123
Fulltext: PDF;
In : 9th LHC Operations Evian Workshop, Evian Les Bains, France, 30 Jan - 1 Feb 2019, pp.117-123
|
|
|
5.
|
Measuring beam size with the LHC Beam Gas Vertex detector
/ Würkner, Benedikt (CERN) ; Alexopoulos, Andreas (CERN) ; Barschel, Colin (CERN) ; Bay, Aurelio (Ecole Polytechnique, Lausanne) ; Blanc, Frederic (Ecole Polytechnique, Lausanne) ; Bravin, Enrico (CERN) ; Bregliozzi, Giuseppe (CERN) ; Chritin, Nicolas (CERN) ; Dehning, Bernd (CERN) ; Ferro-Luzzi, Massimiliano (CERN) et al.
The Beam Gas Vertex detector (BGV) is an innovative beam profile monitor being developed as part of the High Luminosity LHC (HL-LHC) project at CERN. The goal is to continually measure the transverse beam size by reconstructing tracks originating from beam-gas interactions using high precision tracking detectors. [...]
CERN-ACC-2019-205.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPGW084
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPGW084
|
|
|
6.
|
The Beam Gas Vertex profile monitoring station for HL-LHC
/ Kieffer, Robert (CERN ; Royal Holloway, U. of London) ; Alexopoulos, Andreas (CERN ; Thessaly U.) ; Fosse, Loic (CERN) ; Gibson, Stephen (Royal Holloway, U. of London ; CERN) ; Gonzalez Berges, Manuel (CERN) ; Guerin, Helene (CERN ; Royal Holloway, U. of London) ; Jones, Owain Rhodri (CERN) ; Marriott-Dodington, Thomas (CERN) ; Storey, James (CERN) ; Veness, Raymond (CERN) et al.
A new instrument is under development for the High Luminosity upgrade of the Large Hadron Collider at CERN (HL-LHC) to provide non-invasive transverse beam size measurements throughout the full acceleration cycle. The Beam Gas Vertex (BGV) monitor consists of a tank supplied with gas at very low pressure attached to the LHC beam pipe with a series of particle tracking stations located downstream outside vacuum. [...]
CERN-ACC-2019-102.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPGW082
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPGW082
|
|
|
7.
|
|
|
8.
|
Measurement of $J/\psi$ production in association with a $W^\pm$ boson with $pp$ data at 8 TeV
/ ATLAS Collaboration
A measurement of the production of a prompt $J/\psi$ meson in association with a $W^\pm$ boson with $W^\pm \rightarrow \mu\nu$ and $J/\psi \rightarrow \mu^+ \mu^-$ is presented for $J/\psi$ transverse momenta in the range 8.5$-$150 GeV and rapidity $|y_{J/\psi}|<2.1$ using ATLAS data recorded in 2012 at the LHC. The data were taken at a proton-proton centre-of-mass energy of $\sqrt{s}$ = 8 TeV and correspond to an integrated luminosity of 20.3 fb$^{-1}$. [...]
arXiv:1909.13626; CERN-EP-2018-352.-
Geneva : CERN, 2020-01-16 - 38 p.
- Published in : JHEP 2001 (2020) 095
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Previous draft version
|
|
|
9.
|
Noninvasive LHC transverse beam size measurement using inelastic beam-gas interactions
/ Alexopoulos, A (CERN) ; Barschel, C (CERN) ; Bravin, E (CERN) ; Bregliozzi, G (CERN) ; Chritin, N (CERN) ; Dehning, B (CERN) ; Ferro-Luzzi, M (CERN) ; Giovannozzi, M (CERN) ; Jacobsson, R (CERN) ; Jensen, L (CERN) et al.
/BGV
The beam-gas vertex (BGV) detector is an innovative instrument measuring noninvasively the transverse beam size in the Large Hadron Collider (LHC) using reconstructed tracks from beam-gas interactions. The BGV detector was installed in 2016 as part of the R&D; for the High-Luminosity LHC project. [...]
2019 - 15 p.
- Published in : Phys. Rev. Accel. Beams 22 (2019) 042801
Fulltext from Publisher: PDF;
|
|
|
10.
|
|
email alert
or subscribe to the 
RSS feed.