Integration and testing of the DAQ system for the CMS Phase 1 pixel upgrade

B Akgün

doi:10.1088/1748-0221/12/02/c02078

Abstract

The CMS pixel detector phase 1 upgrade in 2017 requires an upgraded data acquisition (DAQ) system to accept higher data rates. A new DAQ system has been developed based on a combination of custom and standard μTCA parts. Custom mezzanines on FC7 AMCs [1] provide a front-end driver for readout, and a front-end controller for configuration, clock and trigger. The DAQ system is undergoing a series of integration tests including readout of the pilot pixel detector already installed in CMS, checkout of the phase 1 detector during its assembly, and testing with the CMS central DAQ. This paper describes the DAQ system, integration tests and results, and an outline of the activities up to commissioning the final system at CMS in 2017.

Highlights

The CMS pixel detector phase 1 upgrade in 2017 requires an upgraded data acquisition (DAQ) to accept higher data rates
This paper describes the DAQ system, integration tests and results, and an outline of the activities up to commissioning the final system at CMS in 2017
The output signal of the TBM is converted to an optical signal off the module and transmitted on a fiber to a Front-End Driver (FED) board in the backend electronics

Summary

System Requirements for DAQ and Readout Architecture

The design of the backend electronics for the Phase 1 pixel detector follows a μTCA schema It uses a redundant, dual-star μTCA backplane to distribute clock, trigger and fast commands that are received from the central CMS Trigger and Command Distribution System (TCDS) [7] via a developed module called AMC13 [8]. The Tracker FEC is used to program the registers of the auxiliary electronics and components like opto-hybrids and DC-DC converters [9] via the I2C interface and PIA port of a CCU [10]. A total of 124 AMCs, with 108 being FEDs, 16 Pixel-FECs and 2 Tracker-FECs, distributed over a total of 12 crates, will be required to control and readout the barrel and forward pixel detector

Phase I Pixel FED and FECs

D Op H D

System Tests in the Laboratory

System Tests in the CMS Detector - Phase 1 Pixel Pilot System

System Tests in the Future

Conclusion