New PDF release: At the Leading Edge: The ATLAS and CMS LHC Experiments

By Dan Green

ISBN-10: 9814304670

ISBN-13: 9789814304672

Too frequently descriptions of detectors specialize in the "what" and never the "why". This quantity goals to explain how the necessities of the physics on the huge Hadron Collider (LHC) outline the detector atmosphere. In flip, the detector offerings are made to undertake to that surroundings. The objective of LHC physics is to discover the mechanism for electroweak symmetry breaking. end result of the minuscule cross-sections which must be explored, 0.1 facebook, the LHC must offer a hundred fb-1/yr, or an immediate luminosity of 1034 / (cm2 sec). With a number crossing period of 25 nsec, compatible to detector speeds, there'll be 25 occasions occupying every one bunch crossing. hence the physics calls for quickly, finely segmented, low noise and radiation resistant detectors which supply redundant measurements of the hardly ever produced electrons and muons. to accomplish these pursuits, new flooring was once damaged in developing the A Toroidal LHC gear (ATLAS) and Compact Muon Solenoid (CMS) detectors within the vertex detectors, monitoring platforms, calorimetry, robust magnets, muon platforms, entrance finish electronics, set off platforms, and within the facts acquisition tools used.

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Additional info for At the Leading Edge: The ATLAS and CMS LHC Experiments

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19. Clearly, the FSR of gluons is an irreducible limitation on doing precision dijet spectroscopy in the environment of a hadron collider. In order to reduce the problem of FSR the cone size could be increased to capture the radiated energy. However, the pileup energy for inelastic interactions increases with the cone area. 6 GeV of pileup pions. The pileup energy will fluctuate event by event. 5in — At the Leading Edge ... b866-ch01 D. Green Fig. 19. Monte Carlo study of W decay into dijets and the resulting mass resolution both with and without FSR.

8 µm DMILL11 process, came close to meeting the requirements but would have needed at least one more iteration. 25 µm process. After test submissions in 2003 and 2004 the main production of the PSI46 chip14 started in 2006. Detector modules were produced between mid-2006 and the end of 2007 at PSI for the barrel, and in the US for the endcaps. The forward detector was integrated at Fermilab and shipped to CERN, where it was fully a ETH Z¨ urich, University of Z¨ urich, University of Basel, HEPHY Vienna.

Two additional layers are placed at radii 7 cm and 11 cm. The full radius of the available volume was not used, in order to limit the total area (and hence cost) while providing three pixel hits per track. 5. 4 cm layer, which is essential for the impact parameter resolution, nominally covers this range with its length of 56 cm. 5 because of the length of the interaction region. A longer barrel is disfavored because the tracks crossing the detector at very shallow angles traverse more material and produce longer clusters.

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At the Leading Edge: The ATLAS and CMS LHC Experiments by Dan Green

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