8 research outputs found
The integration and engineering of the ATLAS SemiConductor Tracker Barrel.
The ATLAS SemiConductor Tracker (SCT) was built in three sections: a barrel and two end-caps. This paper describes the design, construction and final integration of the barrel section. The barrel is constructed around four nested cylinders that provide a stable and accurate support structure for the 2112 silicon modules and their associated services. The emphasis of this paper is directed at the aspects of engineering design that turned a concept into a fully-functioning detector, as well as the integration and testing of large sub-sections of the final SCT barrel detector. The paper follows the chronology of the construction. The main steps of the assembly are described with the results of intermediate tests. The barrel service components were developed and fabricated in parallel so that a flow of detector modules, cooling loops, opto-harnesses and Frequency-Scanning-Interferometry (FSI) alignment structures could be assembled onto the four cylinders. Once finished, each cylinder was conveyed to the next site for the mounting of modules to form a complete single barrel. Extensive electrical and thermal function tests were carried out on the completed single barrels. In the next stage, the four single barrels and thermal enclosures were combined into the complete SCT barrel detector so that it could be integrated with the Transition Radiation Tracker (TRT) barrel to form the central part of the ATLAS inner detector. Finally, the completed SCT barrel was tested together with the TRT barrel in noise tests and using cosmic rays
The integration and engineering of the ATLAS SemiConductor Tracker Barrel
The ATLAS SemiConductor Tracker (SCT) was built in three sections: a barrel and two end-caps. This paper describes the design, construction and final integration of the barrel section. The barrel is constructed around four nested cylinders that provide a stable and accurate support structure for the 2112 silicon modules and their associated services. The emphasis of this paper is directed at the aspects of engineering design that turned a concept into a fully-functioning detector, as well as the integration and testing of large sub-sections of the final SCT barrel detector. The paper follows the chronology of the construction. The main steps of the assembly are described with the results of intermediate tests. The barrel service components were developed and fabricated in parallel so that a flow of detector modules, cooling loops, opto-harnesses and Frequency-Scanning-Interferometry (FSI) alignment structures could be assembled onto the four cylinders. Once finished, each cylinder was conveyed to the next site for the mounting of modules to form a complete single barrel. Extensive electrical and thermal function tests were carried out on the completed single barrels. In the next stage, the four single barrels and thermal enclosures were combined into the complete SCT barrel detector so that it could be integrated with the Transition Radiation Tracker (TRT) barrel to form the central part of the ATLAS inner detector. Finally, the completed SCT barrel was tested together with the TRT barrel in noise tests and using cosmic rays. © 2008 IOP Publishing Ltd and SISSA
The integration and engineering of the ATLAS SemiConductor Tracker Barrel.
The ATLAS SemiConductor Tracker (SCT) was built in three sections: a barrel and two end-caps. This paper describes the design, construction and final integration of the barrel section. The barrel is constructed around four nested cylinders that provide a stable and accurate support structure for the 2112 silicon modules and their associated services. The emphasis of this paper is directed at the aspects of engineering design that turned a concept into a fully-functioning detector, as well as the integration and testing of large sub-sections of the final SCT barrel detector. The paper follows the chronology of the construction. The main steps of the assembly are described with the results of intermediate tests. The barrel service components were developed and fabricated in parallel so that a flow of detector modules, cooling loops, opto-harnesses and Frequency-Scanning-Interferometry (FSI) alignment structures could be assembled onto the four cylinders. Once finished, each cylinder was conveyed to the next site for the mounting of modules to form a complete single barrel. Extensive electrical and thermal function tests were carried out on the completed single barrels. In the next stage, the four single barrels and thermal enclosures were combined into the complete SCT barrel detector so that it could be integrated with the Transition Radiation Tracker (TRT) barrel to form the central part of the ATLAS inner detector. Finally, the completed SCT barrel was tested together with the TRT barrel in noise tests and using cosmic rays
The integration and engineering of the ATLAS SemiConductor Tracker Barrel.
The ATLAS SemiConductor Tracker (SCT) was built in three sections: a barrel and two end-caps. This paper describes the design, construction and final integration of the barrel section. The barrel is constructed around four nested cylinders that provide a stable and accurate support structure for the 2112 silicon modules and their associated services. The emphasis of this paper is directed at the aspects of engineering design that turned a concept into a fully-functioning detector, as well as the integration and testing of large sub-sections of the final SCT barrel detector. The paper follows the chronology of the construction. The main steps of the assembly are described with the results of intermediate tests. The barrel service components were developed and fabricated in parallel so that a flow of detector modules, cooling loops, opto-harnesses and Frequency-Scanning-Interferometry (FSI) alignment structures could be assembled onto the four cylinders. Once finished, each cylinder was conveyed to the next site for the mounting of modules to form a complete single barrel. Extensive electrical and thermal function tests were carried out on the completed single barrels. In the next stage, the four single barrels and thermal enclosures were combined into the complete SCT barrel detector so that it could be integrated with the Transition Radiation Tracker (TRT) barrel to form the central part of the ATLAS inner detector. Finally, the completed SCT barrel was tested together with the TRT barrel in noise tests and using cosmic rays
Combined performance tests before installation of the ATLAS semiconductor and transition radiation tracking detectors
The ATLAS (A Toroidal LHC ApparatuS) Inner Detector provides charged particle tracking in the centre of the ATLAS experiment at the Large Hadron Collider (LHC). The Inner Detector consists of three subdetectors: the Pixel Detector, the Semiconductor Tracker (SCT), and the Transition Radiation Tracker (TRT). This paper summarizes the tests that were carried out at the final stage of SCT+TRT integration prior to their installation in ATLAS. The combined operation and performance of the SCT and TRT barrel and endcap detectors was investigated through a series of noise tests, and by recording the tracks of cosmic rays. This was a crucial test of hardware and software of the combined tracker detector systems. The results of noise and cross-talk tests on the SCT and TRT in their final assembled configuration, using final readout and supply hardware and software, are reported. The reconstruction and analysis of the recorded cosmic tracks allowed testing of the offline analysis chain and verification of basic tracker performance parameters, such as efficiency and spatial resolution, in combined operation before installation. © 2008 IOP Publishing Ltd. and SISSA
Combined performance tests before installation of the ATLAS Semiconductor and Transition Radiation Tracking Detectors
The ATLAS (A Toroidal LHC ApparatuS) Inner Detector provides charged particle
tracking in the centre of the ATLAS experiment at the Large Hadron Collider (LHC). The Inner
Detector consists of three subdetectors: the Pixel Detector, the Semiconductor Tracker (SCT), and
the Transition Radiation Tracker (TRT). This paper summarizes the tests that were carried out at the
final stage of SCT+TRT integration prior to their installation in ATLAS. The combined operation
and performance of the SCT and TRT barrel and endcap detectors was investigated through a series
of noise tests, and by recording the tracks of cosmic rays. This was a crucial test of hardware and
software of the combined tracker detector systems. The results of noise and cross-talk tests on
the SCT and TRT in their final assembled configuration, using final readout and supply hardware
and software, are reported. The reconstruction and analysis of the recorded cosmic tracks allowed
testing of the offline analysis chain and verification of basic tracker performance parameters, such
as efficiency and spatial resolution, in combined operation before installation
Combined performance tests before installation of the ATLAS Semiconductor and Transition Radiation Tracking Detectors
The ATLAS (A Toroidal LHC ApparatuS) Inner Detector provides charged particle
tracking in the centre of the ATLAS experiment at the Large Hadron Collider (LHC). The Inner
Detector consists of three subdetectors: the Pixel Detector, the Semiconductor Tracker (SCT), and
the Transition Radiation Tracker (TRT). This paper summarizes the tests that were carried out at the
final stage of SCT+TRT integration prior to their installation in ATLAS. The combined operation
and performance of the SCT and TRT barrel and endcap detectors was investigated through a series
of noise tests, and by recording the tracks of cosmic rays. This was a crucial test of hardware and
software of the combined tracker detector systems. The results of noise and cross-talk tests on
the SCT and TRT in their final assembled configuration, using final readout and supply hardware
and software, are reported. The reconstruction and analysis of the recorded cosmic tracks allowed
testing of the offline analysis chain and verification of basic tracker performance parameters, such
as efficiency and spatial resolution, in combined operation before installation