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HK: Fachverband Physik der Hadronen und Kerne

HK 47: Instrumentation und Anwendungen II

HK 47.6: Talk

Friday, March 14, 2008, 15:15–15:30, 2D

Production and test of FEE components for ALICE TRD — •Venelin Angelov for the ALICE-TRD collaboration — KIP, Im Neuenheimer Feld 227, 69120 Heidelberg

The Transition Radiation Detector for ALICE at the LHC contains 540 drift chambers and over 1.2 million analog channels. The readout electronics is based on two specially developed chips. The TRAP chip performs analog-to-digital conversion (ADC), digital filtering, preprocessing, quad-CPU based tracking and data shipping over a data tree. The whole detector contains 65,000 such chips, packed as Multi-Chip-Modules (MCM) together with the analog preamplifier-shaper chip. We give an overview of the production of the TRAP chips and of the MCM modules, as well as their automated testing.

The output of the readout data tree is feed to an Optical Readout Interface board (ORI), 1080 in the whole detector. This board is based on commercially available components and works at 2.5Gbps. The production is finished, all boards are configured for operation. We give short report about the test results.