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Karlsruhe 2024 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 61: Silicon trackers 3

T 61.6: Vortrag

Mittwoch, 6. März 2024, 17:15–17:30, Geb. 30.22: kl. HS B

Thermal Cycling of ATLAS ITk Modules with the DESY ColdboxSören Ahrens1, •Lukas Bayer1, Ben Bruers2, Sergio Díez-Cornell1, Torsten Kuelper1, Jonas Neundorf1, and Elizaveta Sitnikova11DESY, Hamburg, Germany — 2DESY, Zeuthen, Germany

In the course of the upcoming High Luminosity upgrade for the LHC, also the Inner Detector of the ATLAS experiment will receive an upgrade to the new Inner Tracker (ITk). Its two endcaps, one of which will be assembled at DESY, consist of individual modules with silicon strip sensors, hybrid read-out chips and power boards. Prior to the integration of these modules into the larger detector structures, they have to run through a series of quality control steps, including thermal cycling and electrical tests, to ensure full functionality at operation temperature. For this purpose, DESY has developed controlled testing environments, so-called coldboxes, and also provided them to other institutions in the ITk community. Each coldbox features electromagnetic shielding, low humidity conditions and temperature control for up to four modules at the same time, and can be paired with high-voltage power-supplies. In this talk the functionality of the coldbox will be discussed, as well as the thermal cycling procedure and its importance for the ITk production chain.

Keywords: coldbox; thermal cycling; module testing; ITk

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