Collaboration efforts of the JINR TRT group, Russian institutions and the international scientific organizations in constructing the ATLAS Inner Detector TRT for LHC is summarized. R&D and TRT ...construction were accomplished during 1994–2007 at the Laboratory of Particle Physics of the Joint Institute for Nuclear Research (LPP JINR) and CERN.
This article describes an automatic system to control the quality of straws installed in the wheels of the end-cap Transition Radiation Tracker of the ATLAS experiment. The system tests both the ...straightness and the electrical insulation of the straws during installation. The testing time per straw is 9
s; consequently it takes about 2
h to measure one layer of straws. The off-line analysis takes 20
s per straw. With this system defects can be immediately detected and corrected. This clearly influences the future performance of the detector.
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. The TRT performance expected at these conditions is reviewed, including pile-up effects at high luminosity.
An optical method for estimating deviation from the linearity of straws with a diameter of 4 mm and a length of 60 cm mounted in the ring frames of a detector is described. The maximum permissible ...deviation from linearity of straws is 400 μm, and the amplitudes of signals from a
55
Fe source vary along the straws by no more than 9%. The results of this optical-linearity checkup agree fairly well with the data obtained using a more accurate method (the measurement of amplitude characteristics with a
55
Fe source) for determining the deviation of a straw from the anode axis.
Straw tube subsystem of the CBM muon detector Peshekhonov, V.; Baskakov, A.; Grigalashvili, N. ...
Physics of particles and nuclei letters,
03/2012, Letnik:
9, Številka:
2
Journal Article
Recenzirano
A straw tube subsystem design of the muon detector of the Compressed Baryonic Matter (CBM) experiment is described. Main parameters of the subsystem are shown. The muon detector performance ...evaluation results obtained using the Monte Carlo simulation are presented.
The development of the NICA heavy ion collider, which is now under way, assumes the development of a Multipurpose Detector (MPD), including an end-cap tracker (EC) (which can be a wheel-type tracker ...based on thin-wall drift tubes (straws) similar to the inner detector of the transition radiation tracker (TRT) in the ATLAS experiment). The identical front and back tracker modules mounted behind the TPC are to ensure the detection of Au-Au ion collision products in the pseudorapidity range from 1.4 to 2.1 with good track parameters of reconstructed events. Each module will contain 60 circular straw planes and maximum straw occupancy will be no higher than 0.2 particle per collision. The NICA EC is substantially different from its analogue and requires a certain amount of R&D. The first results from applying new technology to make a full-scale prototype of the circular EC detector for NICA are presented.
The ATLAS transition radiation tracker Boldyrev, A. S.; Bondarenko, V. G.; Bychkov, V. N. ...
Instruments and experimental techniques (New York),
05/2012, Letnik:
55, Številka:
3
Journal Article
Recenzirano
The transition radiation tracker of the ATLAS setup, which is one of the two multipurpose detectors at the Large Hadron Collider (LHC), its design, and the tasks it performs are described. The ...tracker is fully assembled and commissioned. The first physical results obtained by the tracker in the ATLAS cosmic muon runs are presented.
The ATLAS Inner Detector consists of three sub-systems, the Pixel Detector at the innermost radius, the Semi-Conductor 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. This paper describes the current status of design and construction of the various components of the TRT: the assembly of the barrel modules has recently been completed, that of the end-cap wheels is well underway, and the on-detector front-end electronics is in production. The detector modules and front-end electronics boards will be integrated together over the next year, the barrel and end-cap TRT parts will be assembled and tested with their SCT counterparts during 2005 and installation and commissioning in the ATLAS pit will take place at the end of 2005 and the beginning of 2006.
ATLAS Transition Radiation Tracker test-beam results Akesson, T.; Arik, E.; Baker, K. ...
2nd Workshop on Advanced Transition Radiation Detectors for Accelerator and Space Applications,Bari, Italy,2003-09-04 - 2003-09-07,
2004, Letnik:
522, Številka:
1
Journal Article, Conference Proceeding
Recenzirano
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.
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