Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 64: Halbleiterdetektoren: Forschung und Entwicklung 4
T 64.7: Vortrag
Mittwoch, 6. März 2013, 18:15–18:30, GER-007
Power pulsing of the CMOS sensor Mimosa 26 — •Oleg Kuprash1, 2, Olena Bachynska1, Ingrid-Maria Gregor1, and Ulrich Kötz1 — 1Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, Hamburg 22607 — 2Universität Hamburg, Bundesstraße 55 (Geomatikum), Hamburg 20146
Mimosa 26 is a monolithic active pixel sensor developed by IPHC (Strasbourg) as a first prototype for the ILC vertex detector studies. The resolution requirements for the ILC tracking detector are very extreme, demanding very low material in the detector, thus only air cooling can be considered. Power consumption has to be reduced as far as possible. The beam structure of the ILC allows the possibility of power pulsing: only for about the 1 ms long bunch train full power is required, and during the 199 ms long pauses between the bunch trains the power can be reduced to a minimum. Not being adopted for the power pulsing, the sensor shows in laboratory tests a good performance under power pulsing. The power pulsing allows to significantly reduce the heating of the chip and divides power consumption approximately by a factor of 5. In this report a summary of power pulsing studies using the digital readout of Mimosa 26 will be given.