The L3 lead-scintillating fiber calorimeter Basti, G; Campanelli, M; Cavallari, F ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
06/1996, Letnik:
374, Številka:
3
Journal Article
Recenzirano
Odprti dostop
We report on the construction and test of a lead-scintillating fiber (
spaghetti) calorimeter built to fill the gap between endcaps and barrel in the L3 BGO detector. Results from test-beam, as well ...as MC simulations for the prototypes and for the full detector, are presented.
The STAR silicon strip detector (SSD) Arnold, L.; Baudot, J.; Bonnet, D. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
03/2003, Letnik:
499, Številka:
2
Journal Article
Recenzirano
Odprti dostop
The STAR Silicon Strip Detector (SSD) completes the three layers of the Silicon Vertex Tracker (SVT) to make an inner tracking system located inside the Time Projection Chamber (TPC). This additional ...fourth layer provides two-dimensional hit position and energy loss measurements for charged particles, improving the extrapolation of TPC tracks through SVT hits. To match the high multiplicity of central Au+Au collisions at RHIC the double-sided silicon strip technology was chosen which makes the SSD a half-million channels detector. Dedicated electronics have been designed for both readout and control. Also a novel technique of bonding, the Tape Automated Bonding, was used to fulfill the large number of bounds to be done. All aspects of the SSD are shortly described here and test performances of produced detection modules as well as simulated results on hit reconstruction are given.
The lifetime of the tau lepton is measured using data collected in 1994 by the L3 detector at LEP. The precise track position information of the Silicon Microvertex Detector is exploited. The tau ...lepton lifetime is determined from the signed impact parameter distribution for 30 322 tau decays into one charged particle and from the decay length distribution for 3891 tau decays into three charged particles. Combining the two methods we obtain $\tau_{\tau}$ = 290.1 $\pm$ 4.0 fs.
Measurement of jet modification at RHIC Wang, Fuqiang; Collaboration, the STAR
Journal of physics. G, Nuclear and particle physics,
08/2004, Letnik:
30, Številka:
8
Journal Article, Conference Proceeding
A lead-scintillating fiber calorimeter has been built to fill the gap between endcap and barrel of the L3 BGO electromagnetic calorimeter. We report details of the construction, as well as results ...from test-beam and simulation.
We report on the test-beam results for three prototype modules of a lead-scintillating fiber (
spaghetti) calorimeter. We studied linearity, energy resolution and light collection. The results are in ...agreement with expectations from MC simulation. We also report on the studies for the optimal light guide to be used in the final design.
Fluctuations and correlations in STAR Westfall, Gary D; Collaboration, the STAR
Journal of physics. G, Nuclear and particle physics,
08/2004, Letnik:
30, Številka:
8
Journal Article, Conference Proceeding
Highlights from STAR Schweda, Kai; Collaboration, the STAR
Journal of physics. G, Nuclear and particle physics,
08/2004, Letnik:
30, Številka:
8
Journal Article, Conference Proceeding
Charmed hadrons are interesting observables in heavy ion collisions. They are becoming more accessible to experimental scrutiny at RHIC energies due to the increased production cross-section of charm ...with the larger centre-of-mass energy available at RHIC compared to SPS. One source of interest in charm production is due to the fact that gluon fusion dominates the charm production cross-section at high energy. Hence, a measurement of charm hadrons is directly sensitive to the gluon distributions of the colliding particles. In addition, any measurement of production at RHIC, and more importantly any observed suppression, must be compared to the overall production of pairs. A systematic study of charmed hadrons in all collision systems available at RHIC is therefore an invaluable experimental tool in the characterization of the matter produced at RHIC. In particular, d + Au collisions are a necessary step for the comparison of any possible modification of charm production in Au + Au collisions. We present preliminary results on D meson production from d + Au collisions in STAR at = 200 .
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