Unusual segregation of cystic fibrosis alleles [6]

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THE FLUID SYSTEMS FOR THE SLD CHERENKOV RING IMAGING DETECTOR

We describe the design and operation of the fluid delivery, monitor and control systems for the SLD barrel Cherenkov Ring Imaging Detector (CRID). The systems deliver drift gas (C2H6+TMAE), radiator gas (C5F12+N2) and radiator liquid (C6F14). MeasUred critical quantities such as electron lifetime in the drift gas and ultra-violet (UV) transparencies of the radiator fluids, together with the operational experience, are also reported

Ethical problems in pharmacogenetic studies of psychiatric disorders

none2noneSerretti A.; Artioli P.Serretti A.; Artioli P

Determination of Gamma-ee of the Upsilon(1S) and Upsilon(2S) Resonances, and Measurement of R At W = 9.39 GeV.

Using the Crystal Ball detector operating at the DORIS II storage ring we have measured the leptonic partial widths Fee of the Y(1S) and Y(2S) resonances. We find Gamma-ee(Y(1S)) = 1.34+-0.03+-0.06 keV andGamma-ee(Y(2S)) = 0.56+-0.04+-0.02 keV.The effect on Gamma-ee of applying different prescriptions for radiative corrections is discussed. W e also measure R, the ratio of non-resonant hadronic cross section to the Born cross section of mu pair production, at c.m. energy W = 9 . 3 9 G e V to beR=3.48+-0.04+-0.16

RESULTS FROM THE SLD BARREL CRID DETECTOR

We report on operational experience with an experimental performance of the SLD barrel Cherenkov Ring Imaging Detector from the 1992 and 1993 physics runs. The liquid (C6F14) and gas (C5F12) radiator recirculation systems have performed well, and the drift gas supply system has operated successfully with TMAE for three years. Cherenkov rings have been observed from both the liquid and gas radiators. The number and angular resolution of Cherenkov photons have been measured, and found to be close to design specifications

PERFORMANCE OF THE SLD BARREL CRID DURING THE 1992 PHYSICS DATA RUN

The SLD Barrel Cherenkov Ring Imaging Detector was fully operational in the 1992 physics data run. The electron drift velocity and magnetic field deflection of electron trajectories have been measured. Cherenkov rings have been observed from both the liquid and gas radiators. The number and the resolution of the angle of Cherenkov photons have been measured to be approximately equal to design specifications

Search For Radiative B-meson Decays

The Crystal Ball detector at the e+ e- storage ring DORIS-II has been used to search for radiative B meson decays, especially of the type b --> s-gamma. No monoenergetic gamma-lines have been found in the inclusive photon spectrum from UPSILON(4S) decays, and upper limits are obtained for radiative decays of B mesons to various strange mesons and to the D*. Integrating the photon spectrum over the corresponding energy range, we find BR (B--> gamma-X) < 2.8 x 10(-3), at 90% confidence level for the mass range 892 MeV less-than-or-equal-to M(X) less-than-or-equal-to 2045 MeV

Response of the ATLAS Tile calorimeter prototype to muons

A study of high energy muons traversing the ATLAS hadron the calorimeter in the barrel region in the energy range between 10 and 300 GeV is presented. Both test beam experimental data and Monte Carlo simulations are given and show good agreement. The Tile calorimeter capability of detecting isolated muons over the above energy range is demonstrated. A signal to background ratio of about 10 is expected for the nominal LHC luminosity (10(34) l/cm(2) s). The photoelectron statistics effect in the muon shape response is shown. The e/mip ratio is found to be 0.81 +/- 0.03; the e/mu ratio is in the range 0.91-0.97. The energy loss of a muon in the calorimeter, dominated by the energy lost in the absorber, can be correlated to the energy loss in the active material. This correlation allows one to correct on an event by event basis the muon energy loss in the calorimeter and therefore reduce the low energy tails in the muon momentum distribution