The Construction of ATLAS and CMS Della Negra, Michel; Jenni, Peter; Virdee, Tejinder S
Annual review of nuclear and particle science,
10/2018, Letnik:
68, Številka:
1
Journal Article
Recenzirano
The article describes the early years of the two large general-purpose experiments, ATLAS and CMS, at CERN's Large Hadron Collider (LHC). It covers the early conception of the detector designs to ...achieve the physics goals, the subsequent building of the worldwide collaborations, the evolution of the designs incorporating advances in technology and other considerations, and the painstaking global construction efforts. A detailed technical description of the detectors is beyond the scope of this review. This article also describes the development and deployment of the software and computing systems, by both the collaborations and the LHC Worldwide Computing Grid, in order to extract the physics results.
CMS Status Della Negra, M.
The European physical journal. C, Particles and fields,
07/2004, Letnik:
34, Številka:
S1
Journal Article
Recenzirano
Odprti dostop
AbstractThe status of the construction and installation of CMS is reviewed. All big mechanical pieces have been assembled in the surface hall SX5 (except the 2nd hadronic endcap calorimeter, HE+1, to ...be assembled this autumn). Full test of the magnet on the surface will start in March 2005. Waiting for the underground caverns to be ready, installation and commissioning of the hadron calorimeter and of the muon system has started in SX5. The assembly sequence followed by CMS (v33) is based on the completion of the full CMS detector, minus the staged items (ME4/1 and ME4/2, some RPC chambers at low angles, 50% DAQ online farm, 3rd forward pixel disks), in time for physics in mid-2007.
The general scheme for the fast, pipelined first level trigger on high
p
t muons in the CMS detector at LHC is presented. The prototype PACT system was tested in the high momentum muon beams in the ...RD5 experiment during 1993/94 runs. The obtained efficiency curves are shown.
A beam tagging hodoscope prototype made of squared 1 mm2 fibers arranged in two perpendicular planes and coupled to multi-anode photomultipliers has been studied using 65 MeV proton as well as 95 ...MeV/u 12C beams at various intensities. This hodoscope successfully provided 2D images of proton beams with a detection efficiency larger than 98% with logical OR condition between the two fiber planes. The detection efficiency with a coincidence between the two planes is close to 75% for beam intensities up to ∼1 MHz. Moreover, the timing resolution is around 1.8 ns FWHM. Overall, the performances show that such a technology is viable for beam monitoring during hadrontherapy.
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