CMS pixel upgrade for the phase I: Module production and qualification
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- 作者：M. Miñ ; ano Moya mercedes.minano@cern.ch" class="auth_mail" title="E-mail the corresponding author
- 关键词：CMS ; Phase I ; Pixel detector ; BPIX ; Module production
- 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- 出版年：2016
- 出版时间：21 September 2016
- 年：2016
- 卷：831
- 期：Complete
- 页码：137-139
- 全文大小：570 K
文摘
The present CMS pixel detector has been designed to be fully efficient up to an LHC luminosity of 
. However, the luminosity will increase by a factor of two in the coming years. Therefore it is planned to build and install a new detector in the extended year-end technical stop in 2016–17. Barrel pixel modules are in production since spring/summer 2015 in five different centers. Module production requires bump bonding, wire bonding and gluing processes to finally assemble a full module. To have a uniform performance of all modules standard qualification procedures have been developed. All modules will be subjected to 10 thermal cycles between +17 °C and −25 °C and then electrically tested. In addition, module performance will be verified under high rate X-rays, and internal calibrate signals used for electrical tests will be calibrated in units of electrons using well defined X-ray fluorescence lines from different target materials. The qualification criteria, based on which modules are selected to be used in the final system, will be explained in detail.
. However, the luminosity will increase by a factor of two in the coming years. Therefore it is planned to build and install a new detector in the extended year-end technical stop in 2016–17. Barrel pixel modules are in production since spring/summer 2015 in five different centers. Module production requires bump bonding, wire bonding and gluing processes to finally assemble a full module. To have a uniform performance of all modules standard qualification procedures have been developed. All modules will be subjected to 10 thermal cycles between +17 °C and −25 °C and then electrically tested. In addition, module performance will be verified under high rate X-rays, and internal calibrate signals used for electrical tests will be calibrated in units of electrons using well defined X-ray fluorescence lines from different target materials. The qualification criteria, based on which modules are selected to be used in the final system, will be explained in detail.