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CERN Accelerating science

CERN Document Server 205 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 0.61 δευτερόλεπτα. 
1.
Study of resonance formation in the mass region 1400 - 1500 MeV through the reaction $\gamma\gamma \to K^{0}_{S} K^{\pm} \pi^{\mp}$ / L3 Collaboration
The K^0_SK^+-\pi-+ final state in two-photon collisions is studied with the L3 detector at LEP at e+e- centre-of-mass energies from 183 to 209 GeV with an integrated luminosity of 664.6 pb-1. The \eta(1475) and f1(1420) mesons are observed and their contribution is separated by measuring the formation rates as a function of the photon virtuality Q2. [...]
CERN-PH-EP-2006-041.- Geneva : CERN, 2007 - 20 p. - Published in : JHEP 03 (2007) 018 Fulltext: PDF; SISSA/IOP Open Access article: PDF;
2.
The Solar Flare of the 14th of July 2000 (L3+C detector results) / L3 Collaboration
Several experiments have reported observations on possible correlations between the flux of high energy muons and intense solar flares. If confirmed, these observations would have significant implications for acceleration processes in the heliosphere able to accelerate protons and other ions to energies of at least tens of GeV. [...]
CERN-PH-EP-2006-043.- Geneva : CERN, 2006 - 15 p. - Published in : Astron. Astrophys. 456 (2006) 351-357 Fulltext: PDF;
3.
A search for flaring Very-High-Energy cosmic-ray sources with the L3+C muon spectrometer / L3 Collaboration
The L3+C muon detector at the Cern electron-position collider, LEP, is used for the detection of very-high-energy cosmic \gamma-ray sources through the observation of muons of energies above 20, 30, 50 and 100 GeV. Daily or monthly excesses in the rate of single-muon events pointing to some particular direction in the sky are searched for. [...]
CERN-PH-EP-2006-036.- Geneva : CERN, 2006 - 22 p. - Published in : Astropart. Phys. 25 (2006) 298-310 Fulltext: PDF;
4.
An X-ray scanner for wire chambers / Åkesson, T ; Arik, E ; Assamagan, K A ; Baker, K ; Benjamin, D ; Bertelsen, H ; Bychkov, V ; Callahan, J ; Capéans-Garrido, M ; Catinaccio, A et al.
The techniques to measure the position of sense wires and field wires, the gas gain and the gas flow rate inside wire chambers using a collimated and filtered X-ray beam are reported. Specific examples are given using barrel modules of the Transition Radiation Tracker of the ATLAS experiment..
2003 - Published in : Nucl. Instrum. Methods Phys. Res., A 507 (2003) 622-635
5.
Measurement of Branching Fractions of $\tau$ Hadronic Decays / L3 Collaboration
Using data collected with the L3 detector at LEP at the Z peak, the branching fractions of the $\tau$ lepton into the hadronic final states, $h^- n\pi^0 \nu(n=0,1,2, >= 3)$ and $h^-h^+h^- n\pi^0 \nu$ where $h^\pm$ denotes a charged hadron, are measured to be .....
CERN-EP-2003-019 ; CERN-L3-270.
- 2003. - 17 p.
Fulltext - Fulltext
6.
Operation of the ATLAS Transition Radiation Tracker under very high irradiation at the CERN LHC / Åkesson, T ; Arik, E ; Baker, K ; Baron, S ; Benjamin, D ; Bertelsen, H ; Bondarenko, V ; Bychkov, V ; Callahan, J ; Capéans-Garrido, M et al.
The ATLAS Transition Radiation Tracker (TRT) performance depends critically on the choice of the active gas and on its properties. The most important operational aspects, which have led to the final choice of the active gas for the operation of the TRT at the LHC design luminosity, are presented. [...]
2004 - Published in : Nucl. Instrum. Methods Phys. Res., A 522 (2004) 25-32
In : 2nd Workshop on Advanced Transition Radiation Detectors for Accelerators and Space Applications: TRDs for the Third Millennium, Bari, Italy, 4 - 7 Sep 2003, pp.25-32
7.
ATLAS Transition Radiation Tracker test-beam results / Åkesson, T ; Arik, E ; Baker, K ; Baron, S ; Benjamin, D ; Bertelsen, H ; Bondarenko, V ; Bychkov, V ; Callahan, J ; Capéans-Garrido, M et al.
Several prototypes of the Transition Radiation Tracker for the ATLAS experiment at the LHC have been built and tested at the CERN SPS accelerator. Results from detailed studies of the straw-tube hit registration efficiency and drift-time measurements and of the pion and electron spectra without and with radiators are presented. [...]
2004 - Published in : Nucl. Instrum. Methods Phys. Res., A 522 (2004) 50-55
In : 2nd Workshop on Advanced Transition Radiation Detectors for Accelerators and Space Applications: TRDs for the Third Millennium, Bari, Italy, 4 - 7 Sep 2003, pp.50-5
8.
Status of design and construction of the transition radiation tracker (TRT) for the ATLAS experiment at the LHC / Åkesson, T ; Anghinolfi, F ; Arik, E ; Baker, O K ; Baron, S ; Benjamin, D ; Bertelsen, H ; Bondarenko, V ; Bychkov, V ; Callahan, J et al.
The ATLAS Inner Detector consists of three sub-systems, the pixel detector at the innermost radius, the semiconductor tracker at intermediate radii, and the transition radiation tracker (TRT) at the outermost radius in front of the electromagnetic calorimeter. The TRT provides a combination of continuous tracking with many projective measurements based on individual drift-tubes (or straws) and of electron identification based on radiator fibres or foils interleaved between the straws themselves. [...]
2004 - Published in : Nucl. Instrum. Methods Phys. Res., A 522 (2004) 131-145
In : 2nd Workshop on Advanced Transition Radiation Detectors for Accelerators and Space Applications: TRDs for the Third Millennium, Bari, Italy, 4 - 7 Sep 2003, pp.131-145
9.
Recent aging studies for the ATLAS transition radiation tracker / Capéans-Garrido, M ; Åkesson, T ; Anghinolfi, F ; Arik, E ; Baker, O K ; Baron, S ; Benjamin, D ; Bertelsen, H ; Bondarenko, V ; Bychkov, V et al.
The transition radiation tracker (TRT) is one of the three subsystems of the inner detector of the ATLAS experiment. It is designed to operate for 10 yr at the LHC, with integrated charges of similar to 10 C/cm of wire and radiation doses of about 10 Mrad and 2 multiplied by 10**1**4 neutrons/cm**2. [...]
2004 - Published in : IEEE Trans. Nucl. Sci. 51 (2004) 960-967 IEEE Published version, local copy: PDF;
10.
Aging studies for the ATLAS Transition Radiation Tracker (TRT) / Åkesson, T ; Barberio, E ; Bondarenko, V ; Capéans-Garrido, M ; Catinaccio, A ; Cwetanski, Peter ; Danielsson, H ; Dittus, F ; Dolgoshein, B A ; Dressnandt, N et al.
A summary of the aging and material validation studies carried out for the ATLAS Transition Radiation Tracker (TRT) is presented. Particular emphasis is put on the different phenomena observed in straw tubes operating with the chosen Xe/CF//4/CO//2 mixture. [...]
2003 - Published in : Nucl. Instrum. Methods Phys. Res., A 515 (2003) 166-179
In : International Workshop on Aging Phenomena in Gaseous Detectors, DESY, Hamburg, Germany, 2 - 5 Oct 2001, pp.166-179

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