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Dear Anton Lymanets,

The submission of your abstract has been successfully processed.

Abstract submitted: https://indico.cern.ch/event/192695/call-for- abstracts/my-abstracts.

Status of your abstract: https://indico.cern.ch/event/192695/call- for-abstracts/401/.

See below a detailed summary of your submitted abstract:

Conference: Tipp 2014 - Third International Conference on Technology and Instrumentation in Particle Physics

Submitted by: LYMANETS, Anton

Submitted on: 28 February 2014 22:28

Title: The Silicon Tracking System of the CBM at FAIR: detector development and system integration

Abstract content The CBM experiment at future Facility for Antiproton and Ion Research (FAIR) will explore the properties of nuclear matter at highest net baryon densities and moderate temperature. The key detector – Silicon Tracking System (STS) – will reconstruct charged particle tracks created in interactions of heavy-ion beam with nuclear target at typical projectile energies of 25 GeV/nucleon. Operation at 10 MHz interaction rate with charged particle multiplicities up to 1000 requires fast and radiation hard silicon sensors. The necessary momentum resolution of 1% imposes stringent requirements to the sensor material budget (0.3% X$_0$) and detector module structure.

The STS will occupy the volume of about 1 m$^3$ defined by the aperture of a dipole magnet. It will consist of 8 tracking stations based on double-sided silicon microstrip detectors. The sensors with 58 $\mu m$ pitch, size up to $62 \times 62$ mm$^2$ and 1024 strips per side have AC-coupled strips oriented at $\pm$7.5° stereo angle. Short corner strips on the opposite edges of the sensors are interconnected via second metallization layer thus avoiding insensitive areas.

Complicated design and large number of silicon sensors needed for the construction of the STS (about 1300) require a set of quality assurance procedures that involve optical inspection, electric characterization and readout tests. We report about development of optical inspection system using NI LabVIEW software and Vision package for pattern recognition.

The STS readout electronics with 2.1 million channels will dissipate about 40 kW of power. To cope with it, bi-phase CO2 evaporative cooling will be used. Performance of a test system will be presented.

Summary

Primary Authors: Dr. LYMANETS, Anton (University of Tuebingen) anton.lymanets@uni-tuebingen.de

Co-authors: Prof. SCHMIDT, Hans Rudolf (University of Tuebingen) hans-rudolf.schmidt@uni-tuebingen.de Mr. LAVRIK, Evgeny (University of Tuebingen) evgeny.lavrik@uni-tuebingen.de

Abstract presenters: Dr. LYMANETS, Anton

Track classification: Experiments: 2a) Experiments & Upgrades Emerging technologies: 4a) Cooling and cryogenics

Presentation type: Oral

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