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Joachim MNICH (DESY)22/02/2007, 14:00Invited TalkThe International Linear Collider (ILC) is the next large project in high energy physics and currently being designed in a global effort. The main scientific goal is to complement the anticipated discoveries at the LHC by precision measurements at the TeV scale. This has challenging implications on the ILC detector design and performance requiring unprecedented precision in...
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Marc Buehler (University of Virginia)22/02/2007, 14:55Contributed TalkThe DØ experiment at the Fermilab pp Tevatron collider (Batavia, IL, USA) has undergone significant upgrades in anticipation of high luminosity running conditions. As part of the upgrade, the capabilities of the Central Track Trigger (CTT) to make trigger decisions based on hit patterns in the Central Fiber Tracker (CFT) have been much improved. We report on the implementation,...
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Xavier Llopart Cudie (CERN)22/02/2007, 15:20Contributed TalkA novel approach for the readout of a TPC at the future linear collider is to use a CMOS pixel detector combined with some kind of gas gain grid. A first test using the photon counting chip, Medipix2, with GEM or Micromegas demonstrated the feasibility of such an approach. Although this experiment demonstrated that single electrons could be detected the chip did not provide...
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Giovanni Ambrosi (INFN Perugia)22/02/2007, 16:20Contributed TalkEight layers of double sided silicon microstrip sensors embedded in a 0.8 T magnetic field constitute the core of the AMS-02 apparatus. In each layer, simultaneous measurements of position and energy loss in silicon are performed along the particle trajectory. With its high spatial resolution, the silicon tracker will determine the rigidity (R) and the charge sign of particles up to...
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Henning Gast (RWTH Aachen)22/02/2007, 16:45Contributed TalkThe best measurement of the cosmic ray positron flux available today was performed by the HEAT balloon experiment more than 10 years ago. Given the limitations in weight and power consumption for balloon experiments, a novel approach was needed to design a detector which could increase the existing data by more than a factor of 100. Using silicon photomultipliers for the readout of a...
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Nahee Park (Ewha University)22/02/2007, 17:10Contributed TalkThe Cosmic Ray Energetics And Mass (CREAM) balloon-borne experiment is designed for direct measurement of high-energy cosmic-ray particles. The science goal is to measure the single-element fluxes of all cosmic-ray nuclei from hydrogen (protons) to iron with energies up to the ”knee”, or spectral index change, near 10 15 eV observed in the all-particle spectrum. A dual layer Silicon...
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Ronaldo Bellazzini (INFN Pisa)22/02/2007, 17:35Contributed TalkWe report on a UV photo-detector with single electron sensitivity and excel- lent imaging capabilities. It is based on a semitransparent CsI photocathode followed by a Gas Electron Multiplier (GEM) foil and by a large area, cus- tom, analog, VLSI ASIC. The avalanche charge produced in a GEM hole is extracted and measured by the CMOS chip that is at the same time the pixelized charge...
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Kaori Hattori (Kyoto University)22/02/2007, 18:00Contributed TalkFollowing the successful astronomical observation by COMPTEL onboard GRO, a Compton telescope with higher performance is required. With COMP- TEL a direction of a recoil electron was not measured, so an origin of the incident photon could only be reconstructed to a cone. Measuring the direc- tion of recoil electron reduces the Compton cone to a segment of the cone, and realizes the...
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