20th RD50 Workshop (Bari)

Session

Radiation Damage in LHC Detectors

30 May 2012, 13:30

Bari

Conveners

Radiation Damage in LHC Detectors

• Stephen Gibson (CERN)

40. Leakage current measurements in the ATLAS Pixel Detector

Markus Keil (Georg-August-Universitaet Goettingen (DE))

30/05/2012, 13:30

Radiation Damage in LHC detectors

The talk presents latest results on the leakage current in the ATLAS Pixel Detector. Measurements with low granularity using the high voltage power supplies are shown as well as measurements of the single pixel leakage current, using the so-called monleak measurement of the ATLAS Pixel front-end chip. Where possible the measurements are compared to the predictions.

13. The ATLAS Pixel Detector radiation damage monitoring with the High Voltage delivery system

Konstantin Toms (University of New Mexico (US))

30/05/2012, 13:50

Radiation Damage in LHC detectors

The ATLAS Pixel Detector radiation damage monitoring system uses leakage currents in pixel modules measured with ATLAS Pixel High Voltage delivery system. We present leakage currents measured in 2011 and 2012 and their dependence on the ATLAS integrated luminosity (> 6 fb^{-1}). We compare them with the theoretical model prediction. The status of the system is presented as well as the...

10. Measurements of the effective depletion voltage in the ATLAS Pixel Detector

Andre Lukas Schorlemmer (CERN / Georg-August-Universitaet Goettingen (DE))

30/05/2012, 14:10

Radiation Damage in LHC detectors

With the rapidly increasing LHC luminosity, radiation damage effects in the ATLAS Pixel Detector will become critical to the detector operation and performance. Thus, it is necessary to monitor the impact of the irradiation on a regular basis. One crucial observable is the voltage that is needed to fully deplete the pixel sensor. Before type-inversion this is monitored in the Pixel Detector...

41. Radiation Damage of the CMS Pixel and Strips Tracker (EVO presentation)

Christian Barth (KIT - Karlsruhe Institute of Technology (DE))

30/05/2012, 14:30

Radiation Damage in LHC detectors

In this talk I give an overview of the efforts to monitor the evolution of the sensor properties for the CMS pixel and strips tracker. This contains measurements of changes seen so far, as well as projections of the expected evolution for the coming years of LHC running.

28. Status of radiation damage of the ATLAS SCT detector

Taka Kondo (KEK)

30/05/2012, 15:00

Radiation Damage in LHC detectors

ATLAS barrel SCT sensors have received so far about 0.5 to 1 e12 1MeV-neutron-equivalent fluence per cm**2 from 7-TeV pp collisions at LHC. The HV currents reached up to several micro-Amps/cm**3 at 0 C, assuming they are all due to bulk generation current. Their time dependences are compared with predictions by two leakage current models with self-annealing effects. The prediction takes into...

22. Recent results on radiation damage in the LHCb silicon tracking system

Agnieszka Oblakowska-Mucha (AGH University of Science and Technology (PL))

30/05/2012, 15:55

Radiation Damage in LHC detectors

The LHCb experiment is dedicated to searching for New Physics effects in the heavy flavour sector, precise measurements of CP violation and rare heavy meson decays. Precise tracking and vertexing around the interaction point is crucial in achieving these physics goals. The LHCb VELO (VErtex LOcator) silicon micro-strip detector is the highest precision vertex detector at the LHC and is...

12. Effective depletion voltage and 2nd metal layer charge loss in LHCb VELO

Dr Dermot Moran (University of Manchester)

30/05/2012, 16:15

Radiation Damage in LHC detectors

The VErtex LOcator (VELO) is a silicon strip detector designed to reconstruct particle tracks and vertices produced by proton-proton interactions near to the LHCb interaction point. The excellent track resolution and decay vertex separation provided by the VELO are essential to all LHCb analyses. For the integrated luminosity delivered by the LHC up to the end of 2011 the VELO is exposed...

42. CMS Preshower silicon detector leakage current measurements and observations (EVO)

Alan Honma (CERN)

30/05/2012, 16:35

Radiation Damage in LHC detectors

The CMS Preshower detector is made up of two layers of silicon strip sensors located just behind lead absorber planes for electromagnetic shower energy measurement and position determination. The leakage current measurements from these sensors provides a measure of the radiation damage to the bulk as well as a measure of the distribution of NIEL fluence as a function of pseudorapidity. In...

33. Discussion

Stephen Gibson (CERN)

30/05/2012, 16:55