The Barrel Alignment System of the ATLAS Muon Spectrometer

Barrière, Jean-Christophe; Bauer, F.; Cloué, O.; Duboue, B.; Gautard, V.; Giraud, P. F.; Guyot, C.; Fontaine, M.; Perrin, Patrick; Ponsot, P.; Richardson, Alexandre; Reinert, Y.; Schune, Ph.

doi:10.1109/nssmic.2005.1596366

Cited by 6 publications

(9 citation statements)

References 1 publication

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“…10 Three of the original four ITSAMS systems have been installed in ALICE, one of which we could not make operational due to space constraints. This leaves us with just the minimum number of camera systems to determine any possible motion of the rigid ITS with respect to the TPC.…”

Section: Resultsmentioning

confidence: 99%

“…CHORUS [9] and ATLAS [10] have developed the RASNIK [11] system. This is basically an illuminated coded mask at one end, a lens at a point in the middle, and a CCD or CMOS imaging sensor at the other end.…”

Section: Principle Of Operationmentioning

confidence: 99%

“…The center being zero or black. 10 For distances greater than about 2 m, the divergence of the beam can produce a spot too large for the imager. This could be corrected with superior optical components.…”

Section: Subtracted Imagementioning

confidence: 99%

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A system to monitor possible displacements of the inner tracking system of ALICE

Nilsen¹,

Truesdale²,

Fujita³

et al. 2009

Nuclear Instruments and Methods in Physics Research Section A:

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Section: Resultsmentioning

confidence: 99%

Section: Principle Of Operationmentioning

confidence: 99%

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A system to monitor possible displacements of the inner tracking system of ALICE

Nilsen¹,

Truesdale²,

Fujita³

et al. 2009

Nuclear Instruments and Methods in Physics Research Section A:

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“…An appendix is attached which tabulates the parameters of the individual MDT chambers for reference purposes. Electronics related to chamber alignment are not covered in this paper -see references [2] and [3] for the barrel and end-cap alignment systems respectively.…”

Section: Introductionmentioning

confidence: 99%

ATLAS Muon Drift Tube Electronics

et al. 2008

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This paper describes the electronics used for the ATLAS monitored drift tube (MDT) chambers. These chambers are the main component of the precision tracking system in the ATLAS muon spectrometer. The MDT detector system consists of 1,150 chambers containing a total of 354,000 drift tubes. It is capable of measuring the sagitta of muon tracks to an accuracy of 60 µm, which corresponds to a momentum accuracy of about 10% at p T = 1 TeV. The design and performance of the MDT readout electronics as well as the electronics for controlling, monitoring and powering the detector will be discussed. These electronics have been extensively tested under simulated running conditions and have undergone radiation testing certifying them for more than 10 years of LHC operation. They are now installed on the ATLAS detector and are operating during cosmic ray commissioning runs.

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“…It has been shown that the required absolute position resolution of 30 µm can be achieved with this system [32]. The system also monitors relative movements of the MDT chambers with an accuracy of a few micrometers.…”

Section: Mdt Alignmentmentioning

confidence: 99%

The ATLAS muon spectrometer

Snuverink¹

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There are three more detectors in ATLAS not shown in figure 1.5. They are located at various distances from the interaction point and close to the beam pipe. At z = ±17 m, LUCID [24] is positioned. It is a Cerenkov detector and it detects inelastic proton-proton scattering to measure the integrated luminosity, initially with a precision of 20-30%, and later at high luminosities, a precision better than 5% is expected. A calorimeter, called ZDC [25], is positioned at a distance of ± 140 m. Its purpose is to detect forward neutrons in heavy-ion collisions. The third detector ALFA [26], located approximately ± 240 m from the IP, will measure the absolute luminosity. It consists of scintillating fibre trackers placed inside Roman pots.

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The Barrel Alignment System of the ATLAS Muon Spectrometer

Cited by 6 publications

References 1 publication

A system to monitor possible displacements of the inner tracking system of ALICE

A system to monitor possible displacements of the inner tracking system of ALICE

ATLAS Muon Drift Tube Electronics

The ATLAS muon spectrometer

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