DPF 2009

Session

First Results from LHC

28 Jul 2009, 14:00

Wayne State University

47. Commissioning the CMS pixel detector with Cosmic Rays

Andrew York (Unknown)

28/07/2009, 14:00

First Results from LHC

The Compact Muon Solenoid (CMS) is one of two general purpose experiments at the Large Hadron Collider. The CMS experiment prides itself on an ambitious, all silicon based, tracking system. After almost 20 years of design and construction the CMS tracker detector has been installed and commissioned. The tracker detector consists of ten layers of silicon microstrip detectors while...

16. Results from the Commissioning of the ATLAS Pixel Detector with Cosmic data.

Dr Galyaev Evgeny (University of Texas at Dallas)

28/07/2009, 14:25

First Results from LHC

The ATLAS Pixel Detector is the innermost detector of the ATLAS experiment at the Large Hadron Collider at CERN. Approximately 80M electronic channels of the detector, made of silicon, allow detecting particle tracks and secondary vertices with very high precision. After connection of all of the cooling components and services, and verification of their operation the ATLAS Pixel Detector...

48. First Alignment of the CMS Tracker and Implications for the First Collision Data

Zijin Guo (Johns Hopkins University-Unknown-Unknown)

28/07/2009, 14:50

First Results from LHC

We present the first results of the full CMS Silicon Tracker alignment based on several million reconstructed tracks from the cosmic data taken during the commissioning runs with the detector in its final position. Implication for CMS physics performance is discussed. The all-silicon design of the tracking system of the CMS experiment is expected to provide 1-2% resolution for 100...

160. Alignment of the ATLAS Inner Detector tracking system

Grant Gorfine (Bergische Universitaet Wuppertal)

28/07/2009, 15:15

First Results from LHC

Alignment of the ATLAS Inner Detector tracking system The Large Hadron Collider (LHC) at CERN is the world's largest particle accelerator. It will collide two proton beams at an unprecedented centre of mass energy of 14 TeV. ATLAS is equipped with a charged-particle tracking system built on two technologies: silicon and drift-tube based detectors, constituting the ATLAS Inner...

437. Calibration of the ATLAS EM Calorimeter using W, Z, and J/psi to ee events

Ashfaq Ahmad (Stony Brook University)

28/07/2009, 15:40

First Results from LHC

For particle and jet energies above a few GeV, calorimeters provide the most precise measurements. Thus, calibration of the calorimeters is crucial to achieve those physics goals that are dependent on the energy resolution and scale. For the ATLAS EM calorimeter, the strategy is to obtain a global constant term that is less than 0.7\%. Information from test beams and the hardware calibration...

389. Commissioning of the CMS Endcap Muon System

Mr Phillip Killewald (The Ohio State University)

28/07/2009, 16:30

First Results from LHC

The CMS detector is a general-purpose particle detector centered on one of the interaction points at the LHC. On the endcaps of the detector, interspersed between iron disks that serve as a return yoke for the detector's solenoidal magnetic field, are mounted 468 cathode strip chambers (CSCs). These chambers will serve as a trigger and spectrometer for muons generated in high-energy...

382. Alignment of the CMS Muon System with Tracks

Dr Jim Pivarski (Texas A&M University)

28/07/2009, 16:55

First Results from LHC

As its name suggests, the Compact Muon Solenoid (CMS) features a full tracking spectrometer for identifying and measuring the momenta of muons. Every muon passes through 18-44 layers, providing a highly redundant track capable of validating and improving the momentum measurement from the inner tracker. But like any tracking system, its performance depends on precise knowledge of the positions...

279. ATLAS Muon Detector Commissioning

Dr Edward Diehl (University of Michigan)

28/07/2009, 17:20

First Results from LHC

The ATLAS muon spectrometer consists of several major components: Monitored Drift Tubes (MDTs) for precision measurements in the bending plane of the muons, supplemented by Cathode Strip Chambers (CSC) in the high $\eta$ region; Resistive Plate Chambers (RPCs) and Thin Gap Chambers (TGCs) for trigger and second coordinate measurement in the barrel and endcap regions, respectively; an optical...

49. Cosmic Muon Analysis with the CMS detector

Chang Liu (Purdue University)

28/07/2009, 17:45

First Results from LHC

Despite of the delay of physics collisions at the Large Hadron Collider (LHC), induced by the incidence in September 2008, the CMS collaboration is utilizing the commissioned detector to take large amounts of cosmic data. About 300 million cosmic events were recorded with the full detector and a magnetic field of 3.8~T turned on. The effort has provided significant statistics to...