CERN Accelerating science

ATLAS Slides
Report number	ATL-ITK-SLIDE-2024-124
Title	First test beam insights for ATLAS ITk strip modules with Cold Noise
Author(s)	He, Yajun (Deutsches Elektronen-Synchrotron (DE))
Corporate author(s)	The ATLAS collaboration
Collaboration	ATLAS Collaboration
Submitted by	[email protected] on 05 Jun 2024
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	Future ; ITk ; testbeam ; strip module ; cold noise
Abstract	In order to cope with the occupancy and radiation doses expected at the High-Luminosity LHC, the ATLAS experiment will replace its Inner Detector with an all-silicon Inner Tracker (ITk), containing pixel and strip subsystems. The strip subsystem will be built from modules, consisting of one or two n+-in-p silicon sensors, one or two PCB hybrids containing the front-end electronics, and one powerboard with high voltage, low voltage, and monitoring electronics. The sensors in the central region of the detector will use a simple rectangular geometry, while those in the forward region will use a radial geometry with built-in stereo angle. To validate the expected performance of the ITk strip detector and to have more comprehensive studies on the module behaviours, a series of testbeam campaigns has been performed over several years at the DESY-II and CERN SPS testbeam facilities. This poster is focusing on the very recent test beam results for an irradiated barrel module, which is suffering from COLD NOISE. These results help us understand how much cold noise must be reduced to have proper tracking at end of lifetime.