4,203 research outputs found
The Compressed Baryonic Matter Experiment at FAIR: Progress with feasibility studies and detector developments
The Compressed Baryonic Matter (CBM) experiment is being planned at the
international research center FAIR, under realization next to the GSI
laboratory in Darmstadt, Germany. Its physics programme addresses the QCD phase
diagram in the region of highest net baryon densities. Of particular interest
are the expected first order phase transition from partonic to hadronic matter,
ending in a critical point, and modifications of hadron properties in the dense
medium as a signal of chiral symmetry restoration. Laid out as a fixed-target
experiment at the heavy-ion synchrotrons SIS-100/300, the detector will record
both proton-nucleus and nucleus-nucleus collisions at beam energies between 10
and 45 GeV. Hadronic, leptonic and photonic observables have to be measured
with large acceptance. The interaction rates will reach 10 MHz to measure
extremely rare probes like charm near threshold. Two versions of the experiment
are being studied, optimized for either electron-hadron or muon identification,
combined with silicon detector based charged-particle tracking and micro-vertex
detection. The CBM physics requires the development of novel detector sytems,
trigger and data acquisition concepts as well as innovative real-time
reconstruction techniques. Progress with feasibility studies of the CBM
experiment and the development of its detector systems are reported.Comment: 4 pages, 3 figures - FINAL - To appear in the conference proceedings
for Quark Matter 2009, March 30 - April 4, Knoxville, Tennesse
A multi-zone muffle furnace design
A Multi-Zone Muffle-Tube Furnace was designed, built, and tested for the purpose of providing an in-house experience base with tubular furnaces for materials processing in microgravity. As such, it must not only provide the desired temperatures and controlled thermal gradients at several discrete zones along its length but must also be capable of sustaining the rigors of a Space Shuttle launch. The furnace is insulated to minimize radial and axial heat losses. It is contained in a water-cooled enclosure for purposes of dissipating un-wanted residual heat, keeping the outer surfaces of the furnace at a 'touch-safe' temperature, and providing a rugged housing. This report describes the salient features of the furnace, testing procedures and results, and concluding remarks evaluating the overall design
On the optimum representation of a signal with a limited spectrum truncated by the Kotelnikov series
Optimum representation of signal with limited spectrum truncated by Kotelnikov serie
- …