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CMS Notes

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2014-03-21
11:58
Measuring of induced radioactivity of the HE megatile on IREN at JINR. / Afanasiev, Sergey (Dubna, JINR) ; de Barbaro, Pawel Jan (Rochester U.) ; Borzakov, S.B ; Golutvin, Igor (Dubna, JINR) ; Igamkulov, Z.A ; Malakhov, Alexander (Dubna, JINR) ; Moisenz, Petr (Dubna, JINR) ; Pogodaev, G.N ; Pyataev, V.G ; Sedyshev, P.V et al.
Results of measurement of the induced radioactivity caused by neutrons for a segment of a multi sectional scintillation detector (megatile) are presented. Two endcap sampling calorimeters (HE) are parts of the hadron calorimeter (HCAL) of experimental setup CMS. [...]
CMS-NOTE-2014-002; CERN-CMS-NOTE-2014-002.- Geneva : CERN, 2014 - 13 p. Fulltext: PDF;

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2014-02-20
16:34
HE upgrade beyond phase 1. Finger scintillator option. / Afanasiev, Sergey (Dubna, JINR) ; de Barbaro, Pawel Jan (Rochester U.) ; Boyarintsev, A.Yu ; Emeliantchik, Igor (Minsk, High Energy Phys. Ctr.) ; Golutvin, Igor (Dubna, JINR) ; Grinyov, B.V ; Ershov, Yuri (Dubna, JINR) ; Levchuk, Leonid (Kharkov, KIPT) ; Litomin, Aliaksandr (Minsk, High Energy Phys. Ctr.) ; Malakhov, Alexander (Dubna, JINR) et al.
CMS hadron calorimeters (HB, HE, HO) have been in operation for several years and contributed substantially to the success of the CMS Physics Program. The endcap calorimeter HE suffered more radiation damage than anticipated causing rapid degradation of scintillator segments (tiles) which have a higher radiation flux from secondary particles than HB and HO. [...]
CMS-NOTE-2014-001; CERN-CMS-NOTE-2014-001.- Geneva : CERN, 2014 - 16 p. Fulltext: PDF;

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2013-10-07
11:06
Expected pileup values at the HL-LHC /ATLAS and CMS Collaborations
In this brief note the expected mean number of interactions and the length of the luminous region for the HL-LHC is discussed for an instantaneous luminosity of $5 \times 10^{34} /{\rm cm}^2/{\rm s}$. Its dependence on various parameters is discussed and an uncertainty is estimated. [...]
CMS-NOTE-2013-003; CERN-CMS-NOTE-2013-003.- Geneva : CERN, 2013 - 7 p. Fulltext: PDF;

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2013-07-30
10:46
Projected Performance of an Upgraded CMS Detector at the LHC and HL-LHC: Contribution to the Snowmass Process
The physics reach of the CMS detector achievable with 300(0) inverse femtobarns of proton-proton collisions recorded at sqrt(s)=14 TeV is presented. [...]
CMS-NOTE-2013-002 ; arXiv:1307.7135 ; CERN-CMS-NOTE-2013-002.
- 2013. - 48 p.
Full text - Preprint

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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. Fulltext: PDF;

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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. Fulltext: PDF;

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2012-11-19
09:30
Projection of ICHEP Results to 30/fb at 8 TeV /CMS Collaboration
We estimate the performance of the Higgs Boson measurement presented at ICHEP 2012 projected to 30/fb at 8 TeV..
CMS-NOTE-2012-004; CERN-CMS-NOTE-2012-004.- Geneva : CERN, 2012 - 15 p. Fulltext: PDF;
In : 36th International Conference on High Energy Physics, Melbourne, Australia, 4 - 11 Jul 2012

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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. Fulltext: PDF;

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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. - Published in : J. Instrum. 7 (2012) P10015 Fulltext: PDF; IOP Open Access article: PDF;

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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.
- 2012. - 20 p.
Full text - Preprint

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