Dortmund 2006 – scientific programme
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T: Teilchenphysik
T 304: Detektoren
T 304.3: Talk
Tuesday, March 28, 2006, 17:10–17:25, C2-02-176
Atlas -Pixel -Optoboard Production Tests — •Simon kirichu nderitu1, Peter Maettig1, Peter Gerlach1, and Michail Ziolkowski2 — 1Uni- Wuppertal, FBC-Gaussstr 20, 42097 Wuppertal — 2Uni-Siegen, FB-physik. Water-Flexstr 3, 57068, Siegen
The Atlas Pixel Detector will utilize an optical link to transmit Timing, Triggering and controlling signals (TTC) to the on-detector electronics and as well transmit event data back to the off-detector electronics in the control room for analysis. On the part of the on-detector electronics is a beryllium fabricated opto-board composed of opto-packages and Asics. The opto-board channels for TTC receive a Bi phase encoded signal via a PiN-diode and the Digital Opto-Receiver Chip (DORIC) connected decodes the signal into 40 MHz Clock and command signals. The channels dedicated for event data transmission receive signals from the modules and via a Chip that drives a forward current (VDC) of ~10mA per channel to a Vertical cavity emitting laser-array (VCSEL). 300 opto-boards (including spares) are needed for the detector. The functionalities of the opto-board must pass certain defined quality assurance tests after production. At Wuppertal post production tests are being done for one third of the boards. In this talk i will present the results of these tests. They include Burn-in at 50∘C , thermal cycling between -25∘C and 50∘C a full characterization of the optical and electrical signals against detector specifications at the nominal temperature of 10∘C. An optimally automatized testing system was achieved by developing support boards and software for control, monitoring, analyzing and management of the test-data.