Pixel 2000, June 2000, Genova QA for rad. hard ATLAS pixel sensors, J.M. Klaiber-Lodewigs - Univ. Dortmund Quality assurance for the radiation hard ATLAS pixel sensors Contents: - Why is systematic QA necessary? - Procedures and design features - Measurements before irradiation - Measurements after irradiation
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Quality assurance for the radiation hard ATLAS pixel sensors · Pixel 2000, June 2000, Genova QA for rad. hard ATLAS pixel sensors, J.M. Klaiber-Lodewigs - Univ. Dortmund 2 Introduction
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Pixel 2000, June 2000, Genova QA for rad. hard ATLAS pixel sensors,J.M. Klaiber-Lodewigs - Univ. Dortmund
Quality assurance
for the
radiation hard ATLAS pixel sensors
Contents: - Why is systematic QA necessary?
- Procedures and design features- Measurements before irradiation- Measurements after irradiation
Pixel 2000, June 2000, Genova QA for rad. hard ATLAS pixel sensors, J.M. Klaiber-Lodewigs - Univ. Dortmund 2
Introduction
• large number of detector parts(2228 modules fitted with one sensortile and 16 front-end chips each)
• parts not easily accessible afterassembly (central position, coolingand radiation)
• every bad pixel degradesperformance
• ≈ 1.4·108 pixel channels in total
Why systematic quality assurance for theATLAS pixel sensor?
Pixel 2000, June 2000, Genova QA for rad. hard ATLAS pixel sensors, J.M. Klaiber-Lodewigs - Univ. Dortmund 3
Important steps for QA
Setting technical specifications
Designing according to specifications
Identifying relevant qualities
Defining reliable measurement procedures
Calibrating involved test sites
Archiving measurement data in data base
Pixel 2000, June 2000, Genova QA for rad. hard ATLAS pixel sensors, J.M. Klaiber-Lodewigs - Univ. Dortmund 4