11-15 February 2013
Vienna University of Technology
Europe/Vienna timezone

Ultra-lightweight systems for new ALICE Inner Tracker

Not scheduled
Vienna University of Technology

Vienna University of Technology

Gußhausstraße 25-29, 1040 Wien (Vienna), Austria
Board: 63
Poster Semiconductor Detectors


Dr Grigori Feofilov (St. Petersburg State University (RU))


We present practical solutions, design and examples of technologies of the low-mass, low-Z structures with various integrated cooling systems to be used for Monolithic arrays of pixel detectors (MAPS) for ALICE [1] at the LHC. These promising, high speed, precise, high granularity, 50 um thin pixel detectors will be used for particle tracking and vertex determination in the upgraded ALICE Inner Tracking System. The physics requirements are imposing severe constraints in terms of mass minimization of all mechanical, cooling and signal cables structures, and in terms of precision and stability of the detector support structure. Several technologies are presented. They include air-cooling and liquid cooling options: extremely low-mass (about 1.4 g, l=30cm) Carbon Fiber (CF) based support structures with cooling ducts, CF Wound Truss Structure plus CF Plate with Embedded Pipes, Si- and Polyimide- micro-channel cooling. Results of the first heat drain tests are showing that these ultra-lightweight systems are meeting the basic requirements in terms of cooling up to 0.5 Watt/cm2. The design ensures the radiation transparency at the level of about 0.31% of X0 per layer for the layers forming the Inner Barrel.
quote your primary experiment ALICE

Primary author

Dr Grigori Feofilov (St. Petersburg State University (RU))

Presentation Materials