1,053 research outputs found
Belle II Technical Design Report
The Belle detector at the KEKB electron-positron collider has collected
almost 1 billion Y(4S) events in its decade of operation. Super-KEKB, an
upgrade of KEKB is under construction, to increase the luminosity by two orders
of magnitude during a three-year shutdown, with an ultimate goal of 8E35 /cm^2
/s luminosity. To exploit the increased luminosity, an upgrade of the Belle
detector has been proposed. A new international collaboration Belle-II, is
being formed. The Technical Design Report presents physics motivation, basic
methods of the accelerator upgrade, as well as key improvements of the
detector.Comment: Edited by: Z. Dole\v{z}al and S. Un
Micro Digital Solar Attitude Detector and Imager
The Johns Hopkins University Applied Physics Laboratory (JHU/APL) has developed the first generation of a micro digital solar attitude detector (DSAD). The micro-DSAD (ìDSAD) design is based on our patented approach of combining a centroiding position-sensitive active-pixel architecture with standard imaging capability for providing optional “engineering channel” images. This approach avoids the need for a DSP (digital signal processor) in computing the position, thus dramatically lowering the required mass and power resources. The ìDSAD technology is presently at Technology Readiness Level (TRL) 5. We have demonstrated robust performance, significant total dose radiation tolerance, and single-event latchup immunity on small format prototype devices. The proposed ìDSAD realizes a significant breakthrough in meeting the requirements for the Sun sensor needed as part of ultra-low-power electronics and avionics. The ìDSAD device can also be used as an medium resolution imager for use in monitoring solar panel, boom, and antenna deployments or for sighting stars or other items of interest. Incorporating the entire sensor and its interface on a single chip enables us to create a sensor small enough to be of great utility in microsatellites for spacecraft formation flying, as well as applicability in nearly all NASA spacecraft missions
Technical Design Report for the PANDA Micro Vertex Detector
This document illustrates the technical layout and the expected performance of the Micro Vertex Detector (MVD) of the PANDA experiment. The MVD will detect charged particles as close as possible to the interaction zone. Design criteria and the optimisation process as well as the technical solutions chosen are discussed and the results of this process are subjected to extensive Monte Carlo physics studies. The route towards realisation of the detector is
outlined
Infrastructure for Detector Research and Development towards the International Linear Collider
The EUDET-project was launched to create an infrastructure for developing and
testing new and advanced detector technologies to be used at a future linear
collider. The aim was to make possible experimentation and analysis of data for
institutes, which otherwise could not be realized due to lack of resources. The
infrastructure comprised an analysis and software network, and instrumentation
infrastructures for tracking detectors as well as for calorimetry.Comment: 54 pages, 48 picture
A Rad-hard CMOS Active Pixel Sensor for Electron Microscopy
Monolithic CMOS pixel sensors offer unprecedented opportunities for fast
nano-imaging through direct electron detection in transmission electron
microscopy. We present the design and a full characterisation of a CMOS pixel
test structure able to withstand doses in excess of 1 MRad. Data collected with
electron beams at various energies of interest in electron microscopy are
compared to predictions of simulation and to 1.5 GeV electron data to
disentagle the effect of multiple scattering. The point spread function
measured with 300 keV electrons is (8.1 +/- 1.6) micron for 10 micron pixel and
(10.9 +/- 2.3) micron for 20 micron pixels, respectively, which agrees well
with the values of 8.4 micron and 10.5 micron predicted by our simulation.Comment: 16 pages, 9 figures, submitted to Nucl. Instr and Meth
Facility for fast neutron irradiation tests of electronics at the ISIS spallation neutron source
The VESUVIO beam line at the ISIS spallation neutron source was set up for neutron irradiation tests in the neutron energy range above 10 MeV. The neutron flux and energy spectrum were shown, in benchmark activation measurements, to provide a neutron spectrum similar to the ambient one at sea level, but with an enhancement in intensity of a factor of 107. Such conditions are suitable for accelerated testing of electronic components, as was demonstrated here by measurements of soft error rates in recent technology field programable gate arrays
Reconfigurable environmentally adaptive computing
Described are methods and apparatus, including computer program products, for reconfigurable environmentally adaptive computing technology. An environmental signal representative of an external environmental condition is received. A processing configuration is automatically selected, based on the environmental signal, from a plurality of processing configurations. A reconfigurable processing element is reconfigured to operate according to the selected processing configuration. In some examples, the environmental condition is detected and the environmental signal is generated based on the detected condition
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