The Muon Spectrometer of the ATLAS detector at the LHC is designed to provide high quality stand-alone muon identification, momentum measurement and trigger capabilities with high pseudorapidity coverage. This paper describes chamber readout electronics and presents the results of the tests with cosmicray muons. Results: cathode side readout (o4-line) To estimate the overall chamber resolution, one needs to recall that strips in odd/even planes are Muon hit appears as a charge cluster spread over staggered by a half strip width. They were designed and produced in Dubna. Two CMS production Cathode Strip Chambers were tested for aging effects in a high-radiation environment at the Gamma Irradiation Facility at CERN. 540 six-plane cathode strip chambers of trapezoidal shape, the largest being about 3.4 m × 1.5 m in size. Coordinate resolution was measured for all types of chambers, and fall in the range 47μm to 243μm. Coordinate resolution was measured for all types of chambers, and fall in the range 47μm to 243μm. Ward, Emma Microstrip gas chambers achieve high precision and high rate by emulating the field structure of multiwire chambers using a sequence of alternating anode and cathode strips on an insulating support. Figure 1. Tracks (reco. This paper describes chamber readout electronics and presents the results of the tests with cosmic-ray muons. Their performance has been evaluated using data taken during a cosmic ray run in fall 2008. Channel-Link LVDS transmitters from National Semiconductor drive the data onto the custom backplane. Therefore, out of six 3}4 strips and stretched in time over a few time measurements along a muon track in a chamber, samples. In a CSC layer, the anode wires are in the azimuthal direction and the cathode strips are in the radial direction. 1.3 CSC Principle of Operation The basic construction of a CSC is that of a conventional wire chamber. 12 Cathode Strip Chamber Track-Finder DRAFT CMS Trigger TDR 8/11/00 186 12.3 Receivers and DT Track-Finder to the Sector Processor. Coordinate resolution was measured for all types of chambers, and fall in the range 47 microns to 243 microns. Event: Each event is distinguished by a run number, event number, luminosity section, and time stamp . Close Tracking. The CSCs [3] are six-layer, two-coordinate-mea-suring, multiwire-proportional, cathode-strip chambers separated by the iron disks of the flux Two CMS production Cathode Strip Chambers were tested for aging effects in the high radiation environment at the Gamma Irradiation Facility at CERN. 12.4. Cathode strip/pad chambers are basically multiwire gas chambers with segmented cathodes. The ME1/1 cathode strip chambers are the part of the CMS endcap muon system. Performance of the CMS cathode strip chambers with cosmic rays Want to know more? To reproduce the experimental conditions, the intensity of the muon stream in our model had the impulse structure of 40MHz rate. The chambers have been installed in the detector and commissioning has been completed. They were designed and produced in Dubna. Data from CSCs are used to provide online trigger primitives for the CMS Muon trigger, as well as hits and track segments used for CMS High Level Trigger (HLT) and for offline reconstruction of muon segments. Their performance has been evaluated using data taken during a cosmic ray run in fall 2008. The production, installation, and testing of 468 cathode strip chambers for the endcap muon system of the CMS experiment played a critical role in the preparation of the endcap muon system for the final commissioning. Scintillators as an external trigger for cathode strip chambers J. The PHENIX Muon Tracker Cathode Strip Chambers (CSC) detector system is now beginning final construction for both of the muon spectrometers. cathode-strip chambers (CSCs) of the CMS End-cap Muon system [2] provide the high coordinate precision and fast response time needed for effective bunch crossing number identification. The chambers were irradiated over a large area: in total, about 2.1m**2 or 700m of wire in each chamber. Close Provenance. Imported geometry models such the beam pipe. The Cathode Strip Chambers (CSCs) are special multiwire proportional chambers placed in the high region of the Muon Spectrometer, where flux of background particles is highest. The chambers have been installed in the detector and commissioning has been completed. Close Imported. Close. The Cathode Strip Chambers (CSCs) constitute the primary muon tracking device in the CMS endcaps. Cathode strip chambers meet these requirements in the endcap and the barrel ICgions through the application of a single rechnology. Each CSC consists of six layers. Presented are the main design features of the large cathode strip chambers (CSCs) for the CMS endcap muon system as well as the performance results obtained with the first large-scale prototype. Close. Their purpose is to efficiently filter out the background particle, tracking only the muons traversing it with high degree of accuracy. proportional cathode-strip chambers separated by theiron disks of the flux return yoke of the CMS magnet. The chambers were irradiated over a large area: in total, about 2.1 m{sup 2} or 700 m of wire in each chamber. The anode group numbers increase with increasing radius R.The strip numbers in the wide part (1Ä64) increase with increasing φ, while in the narrow part the readout direction is opposite (1Ä16). For all the ME1/1 CSCs the layer numbers increase from 1 to 6 going away from the interaction point (IP). When a charged particle passes through the active gas volume of the detector, it produces ionization 5. Strips, milled on the cathode panels, run radially in the endcap geometry and thus provide a precise measurement of the ϕ-coordinate. Precision tracking at the inner-most station in the high pseudorapidity regions, 2.0 ≪ |η| ≪ 2:7, is performed by 16 four-layered Cathode Strip Chambers … Their performance has been evaluated using data taken during a cosmic ray run in fall 2008. The Cathode Strip Chambers (CSCs) constitute the primary muon tracking device in the CMS endcaps. The Cathode Strip Chambers (CSCs) are the main detectors of the endcap muon system of the CMS experiment [1]. After testing they were reinstalled back into the ATLAS detector. Measured noise levels are low, with the number of noisy channels well below 1%. The design principle for a multi-wire proportional chamber with a cathode strip and delay-line readout is described. The Cathode Strip Chambers (CSCs) constitute the primary muon tracking device in the CMS endcaps. The ME1/1 cathode strip chambers are the part of the CMS endcap muon system. … Coordinate resolution was measured for all types of chambers, and fall in the range 47 mm to 243 mm. 1), it knocks electrons out of the gas molecules and they flock to anode wires, meanwhile positively charged ions move towards cathode strips inducing a charge on them. Measured noise levels are low, with the number of noisy channels well below 1%. The Cathode Strip Chambers (CSCs) are planned to operate throughout the HL-LHC era. Precision tracking at the inner-most station in the high pseudorapidity regions, 2.0 ≪ |η| ≪ 2:7, is performed by 16 four-layered Cathode Strip Chambers on each end-cap. The layout of one sector of one crate is shown in Fig. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The ME1/1 cathode strip chambers are the part of the CMS endcap muon system. A. Muñoz Department of Physics, Princeton University, Princeton, NJ 08544 An external trigger was set up to test cathode strip chambers (CSCs) in conjunction with prototype electronics by detecting cosmic-ray muons. Go here. Using photolithography instead of physical wires, the distance between sensitive elements can be reduced to a fraction of a millimetre. They were designed and produced in Dubna. The Cathode Strip Chambers (CSCs) constitute the primary muon tracking device in the CMS endcaps. Common testing procedures and sets of standard equipment were used at 5 international assembly centers.
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