Semiconductor Detectors (Fachbereich Halbleiterdetektoren)

Welcome to the "Semiconductor Detectors Group" at the Vienna Institute of High Energy Physics.

Our group is working in the development of semiconductor tracking detectors for high energy physics applications. Existing vertex detectors of current experiments at high energy physics colliders are mainly silicon strip detectors, although during the last few years also some silicon pixel detectors came into operation.

Other materials than silicon are a highly interesting field of research, yet up to now all existing vertex detectors are based on silicon. Our group is involved into a CERN R&D project doing studies on the use of CVD diamond films as particle detectors.

The laboratory at our institute provides facilities for the testing, bonding and assembly of detectors. The silicon structures themselves are made by industrial manufacuterers.

Overview

• Group members
• Lehrveranstaltungen
• List of publications
• Seminars
• Internal Pages - Restricted Access
• Internal Pages - DBSERVER

Present Research Projects

The projects of our group are all related with experiments or R&D projects at CERN and require the close collaboration of many institutes from various countries. Right now we participate in the CMS collaboration to built the world largest silicon tracking device ever.

The CMS Inner Tracker This future tracking detector will be the centre part of the future experiment CMS which is intended to go into operation at the planned collider LHC (Large Hadron Collider) at CERN in the year 2005. Our institute will be one of the production centres for the several thousands of modules needed for this detector. The size of the CMS Inner Tracker will be approximately 200 m2, that means it will be more than 100 times larger than the largest currently existing silicon tracker. Besides the huge size the high radiation background at the LHC is also a major challenge in the construction of this detector. The technical design report (TDR), containing already a quite detailed description of the detector planned, was published April 1998. CMS Inner Tracker Project Page CMS Sensor Test Lab

Silicon for the Linear Collider

The world's next large particle accelerator will be the International Linear Collider (ILC). SilC is an R&D collaboration to develop silicon detectors for the ILC.

• SilC homepage
• 1st SilC Meeting Vienna
• 2nd SilC Meeting Paris
• 3rd SilC Meeting Liverpool
• 4th SilC Meeting Barcelona
• 5th SilC Meeting Prague
• 6th SilC Meeting Torino

Experiments: SiD - LDC

Completed Research Projects

The DELPHI Silicon Tracker

This detector is used as a microvertex detector in the centre of the DELPHI detector at the LEP (Large Electron Positron Collider) at CERN. For the enhanced version of LEP, which is called LEP200 and started in summer 1996, this microvertex detector was essentially upgraded. A major part of this upgrade was the installation of the so-called - "DELPHI Very Forward Tracker (VFT)", whose purpose is to reconstruct particle tracks in the forward regions of DELPHI. As a part of the silicon tracker, the VFT itself consists of two subdetectors: one based on silicon pixel detectors and the other one based on silicon strip detectors. Our working group was in charge of the development and the construction of the later, called the "VFT Ministrips". With an active detector area of 1.5 m2 the DELPHI Silicon Tracker is at present the largest silicon tracking detector in the world. DELPHI Micro-Vertex-Tracker Movie (11 MB)

RD20

RD42

• Results from first Experiments with CMS Silicon and Diamond Pixel Detectors

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