SILICON RADIATION DAMAGE MODELLING
Comparison of SCT leakage current measurements with predictions.
Radiation damage fluence predictions in the ATLAS inner detector used for predicting silicon pixel and SCT performance.
The high levels of radiation background at the LHC has had a major impact on the design of the machine and experiments. It is important to verify the fluence and dose predictions, which in turn allow an accurate estimates of leakage current evolution and depletion voltages in the ATLAS Pixel and SCT systems. Understanding the effects of Single Effect Upsets has been crucial too. The Sheffield Radiation Effects team led by Dawson has played a leading role in this effort, reporting to the SCT operations and performance group. A summary of this work for Run 1 was reported recently by Dawson in an ATLAS collaboration publication:
Operation and performance of the ATLAS semiconductor tracker, JINST, 2014.
- Key documentation
- Operation and performance of the ATLAS semiconductor tracker, JINST, 2014 (Chapter 7, Radiation Effects)
- Radiation background simulation and verification at the LHC: Examples from the ATLAS experiment and its upgrades, Proceedings of Science, 015, 2012
- Fluence and dose measurements in the ATLAS inner detector and comparison with simulation, ATL-INDET-INT-2011-004, May 2011
- First Results from the Online Radiation Dose Monitoring System in the ATLAS experiment; , Proceedings of IEEE Nuclear Science Symposium Conference, NP3.M-40, 2011
- Radiation Background Task Force Summary Document, ATL-GEN-2005-001, January 2005
- Recent presentations
(Note ATLAS internal talks cannot be viewed by public.)
- Radiation Backgrounds in the Inner Detector for Run 2, talk by Paul at the SCT Weekly meeting, 15 July 2014
- Radiation Backgrounds in the Inner Detector for Run 2, talk by Ian at the SCT Weekly meeting, 29 April 2014
- Radiation Background Simulation and Verification at the LHC and Its Upgrades, international conference talk by Ian at Vertex 2012, South Korea, September 2012
- Simulating LHC fluences for the ATLAS Inner Detector, talk by Paul at Second Inter-Experiment Workshop on Radiation Damage in Silicon Detectors, CERN, 7 March 2012
- Tool for calculating NIEL/TID in SCT modules, SCT Performance meeting, 1 September 2011
- Ionisation dose estimation from FLUKA simulation, SCT Performance meeting, 28 July 2011
- Radiation Damage in the SCT, talk by Ian at ATLAS ID week, CERN, February 2011
- Fluence and dose measurements and comparison with simulations, talk by Ian in SCT performance meeting, CERN, October 2010
- Further details and older pages can be found here
Department of Physics and Astronomy, University of Sheffield, Hounsfield Road, Sheffield S3 7RH, UK
Page maintained by Ian.Dawson@cern.ch.
The results and conclusions from these detector effect studies feed into the ATLAS upgrade studies, in particular for understanding uncertainties in the simulations and determining safety factors.
This work is carried out by Dr. Ian Dawson and Dr. Paul S. Miyagawa, funded mainly through the STFC, with occasional contributions from MSc and PhD students. Past members of the team have included Dr. L. Nicolas and Dr. P. Majewski.