2013-01-10
14:35 |
Simulation Studies of the Radiation Environment in the CMS Detector for pp Collisions at the LHC
/ Bhat, Pushpalatha (Fermilab) ; Mokhov, Nikolai (Fermilab) ; Singh, A. P ; Bala, Suman (Panjab U.)
Detailed knowledge of the radiation environment in which the CMS detector has to operate at the Large Hadron Collider is vital to ensure safe operation of the detector and to maintain the desired performance quality. Therefore, we have carried out Monte Carlo simulation studies using MARS code to estimate particle fluxes and radiation dose in the CMS silicon pixel and strip trackers as well as in the surrounding detector subsystems from proton-proton collisions, beam-gas and beam halo interactions, and for some LHC beam accident scenarios. [...]
CMS-NOTE-2013-001; CERN-CMS-NOTE-2013-001.-
Geneva : CERN, 2010 - 28 p.
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2012-11-19
09:31 |
CMS at the High-Energy Frontier. Contribution to the Update of the European Strategy for Particle Physics
/CMS Collaboration
We present a study of the physics potential of the upgraded CMS detector in Higgs physics, searches for new physics, top, and electroweak physics in three scenarios: the LHC (300 fb$^{-1}$ at 14 TeV), HL--LHC (3000 fb$^{-1}$ at 14 TeV), and HE--LHC (300 fb$^{-1}$ at 33 TeV). We also discuss the potential to reduce the PDF uncertainties, which at the moment the limiting systematics for many of these studies. [...]
CMS-NOTE-2012-006; CERN-CMS-NOTE-2012-006.-
Geneva : CERN, 2012 - 18 p.
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2012-11-19
09:30 |
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2012-09-21
16:18 |
CMS Barrel Muon Alignment: Influence of Missing MABs on DT-positioning Accuracy
/ Bencze, Gyorgy (Budapest, RMKI) ; Beni, Noemi Tekla (Debrecen, Inst. Nucl. Res.) ; Szillasi, Zoltan (Debrecen, Inst. Nucl. Res.) ; Ujvari, Balazs (Kossuth Lajos U., Debrecen)
The CMS Muon Barrel Alignment system uses cameras mounted on 36 rigid MAB structures to monitor DT positions. During the 2010 and 2011 data-taking periods, 4 such MABs became inoperative. [...]
CMS-NOTE-2012-005; CERN-CMS-NOTE-2012-005.-
Geneva : CERN, 2012 - 9 p.
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2012-08-01
10:00 |
Tests of CMS Hadron Forward Calorimeter Upgrade Readout Box Prototype
/ Chatrchyan, Sergey (Yerevan Phys. Inst.) ; Khachatryan, Vardan (Yerevan Phys. Inst.) ; Sirunyan, Albert (Yerevan Phys. Inst.) ; Tumasyan, Armen (Yerevan Phys. Inst.) ; Mossolov, Vladimir (Minsk, High Energy Phys. Ctr.) ; Shumeiko, Nikolai (Minsk, High Energy Phys. Ctr.) ; Cornelis, Tom (Antwerp U., WISINF) ; Ochesanu, Silvia (Antwerp U., WISINF) ; Roland, Benoit Florent (Antwerp U., WISINF) ; Staykova, Zlatka (Antwerp U., WISINF) et al.
A readout box prototype for CMS Hadron Forward calorimeter upgrade is built and tested in CERN H2 beamline. The prototype is designed to enable simultaneous tests of different readout options for the four anode upgrade PMTs, new front-end electronics design and new cabling. [...]
CMS-NOTE-2012-001; CERN-CMS-NOTE-2012-001.-
Geneva : CERN, 2012 - 17 p.
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2012-08-01
09:05 |
Prospective Studies for LEP3 with the CMS Detector
/ Azzi, Patrizia (INFN, Padua) ; Bernet, Colin (CERN) ; Botta, Cristina (CERN) ; Janot, Patrick (CERN) ; Klute, Markus (MIT) ; Lenzi, Piergiulio (CERN) ; Malgeri, Luca (CERN) ; Zanetti, Marco (MIT) ; Gomez Ceballos, Guillelmo (MIT)
On July 4, 2012, the discovery of a new boson, with mass around 125 GeV/c2 and with
properties compatible with those of a standard-model Higgs boson, was announced
at CERN.In this context, a high-luminosity electron-positron collider ring, operating
in the LHC tunnel at a centre-of-mass energy of 240 GeV and called LEP3, becomes
an attractive opportunity both from financial and scientific point of views. [...]
CMS-NOTE-2012-003 ; arXiv:1208.1662 ; CERN-CMS-NOTE-2012-003.
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2012. - 20 p.
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2012-07-05
17:44 |
An improvement of a radiation hardness of the CMS Hadron Endcap Calorimeters under increased LHC luminosity
/ Afanasiev, Sergey (Dubna, JINR) ; Emeliantchik, Igor (Minsk, High Energy Phys. Ctr.) ; Golutvin, Igor (Dubna, JINR) ; Levchuk, Leonid (Kharkov, KIPT) ; Litomin, Aliaksandr (Minsk, High Energy Phys. Ctr.) ; Makankin, Alexander (Dubna, JINR) ; Malakhov, Alexander (Dubna, JINR) ; Moisenz, Petr (Dubna, JINR) ; Shumeiko, Nikolai (Minsk, High Energy Phys. Ctr.) ; Smirnov, Vitaly (Dubna, JINR) et al.
One very important aspect of an upgrade program of the Hadron Endcap Calorimeters (HE) is connected with the need to provide a radiation hardness of individual detectors (tiles), located in the first five layers of each HE for towers 23 - 29 (pseudo rapidity range 2.0 - 3.0). Changing the method of light collection from the most irradiated scintillator tiles will provide a longer
term use of scintillators as a detector of HE under increased LHC luminosity. [...]
CMS-NOTE-2012-002; CERN-CMS-NOTE-2012-002.-
Geneva : CERN, 2012 - 9 p.
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2011-12-14
11:03 |
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2011-11-17
09:48 |
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2011-11-03
13:38 |
The CMS data representation using a cascade process of hadronization
/ Roinishvili, Vladimir (Tbilisi, Inst. Phys.)
The CMS data on multiplicity is compared with the data from other experiments on $\mathrm{e^+e^-}$ annihilation and $\mathrm{pp}$/$\mathrm{\bar pp}$ collisions. It is shown that $Z=\log(n_{ch})$ is an adequate variable for hadronizations, which has a linear dependency on the logarithm of the energy. [...]
CMS-NOTE-2011-006.-
Geneva : CERN, 2011 - 5 p.
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