Caitlin Simopoulos

Learn More
The DIRC is a totally internally reflecting Cherenkov imaging detector proposed for particle identification at the asymmetric e+e− B factories. First test results from a conceptual prototype using cosmic muons are reported. The photo-electron yield and the single Cherenkov photon resolution at various track dip angles and positions along the radiator bar(More)
K. Bane, J. Bowers, A. Chao, T. Chen, F. J. Decker, R. L. Holtzapple, P. Krejcik, T. Limberg, A. Lisin, B. McKee, M. G. Minty, C.-K. Ng, M. Pietryka, B. Podobedov, A. Rackelmann, C. Rago, T. Raubenheimer, M. C. Ross, R. H. Siemann, C. Simopoulos, W. Spence, J. Spencer, R. Stege, F. Tian, J. Turner, J. Weinberg, D. Whittum, D. Wright, F. Zimmermann Stanford(More)
Understanding gene expression and metabolic re-programming that occur in response to limiting nitrogen (N) conditions in crop plants is crucial for the ongoing progress towards the development of varieties with improved nitrogen use efficiency (NUE). To unravel new details on the molecular and metabolic responses to N availability in a major food crop, we(More)
We report on the electrostatic design and related measurements of the barrel Cherenkov Ring Imaging Detector for the Stanford Large Detector experiment at the Stanford Linear Accelerator Center Linear Collider. We include test results of photon feedback in TMAEladen gas, distortion measurements in the drift boxes and corona measurements. * Work supported by(More)
We present the first study of rapidity gaps in ee annihilations, using Z decays collected by the SLD experiment at SLAC. Our measured rapidity gap spectra fall exponentially with increasing gap size over five decades, and we observe no anomalous class of events containing large gaps. This supports the interpretation of the large-gap events measured in pp(More)
The transverse damping rates of the SLC electron and positron damping rings have been measured during the high current physics run at, I = 3.5 x 10" particles per bunch. The measurements, done over a period of two months, show large fluctuations exceeding the statistical uncertainty of each measurement. The longitudinal d a m p ing rate of the positron(More)
Using an impact parameter tag to select an enriched sample of Z0 → bb events, we have measured the difference between the average charged multiplicity of Z0 → bb and Z0 → hadrons to be nb − nhad = 2.24 ± 0.30(stat.) ± 0.33(syst.) tracks per event. From this, we have derived nb − nuds = 3.31 ± 0.41 ± 0.79. Comparing this measurement with those at lower(More)
Measurements of the branching ratios of ten Cabibbo suppressed hadronic weak decays of the II+ and Do are presented from data collected with the Mark III detector at SPEAR. In addition to the previously observed channels Do --) K-K+ and T-T+, we report new measurements of Do + r-rr+~O and ?r-n+rr-7rlr+; and D+ + I?OK+ , TOT+, I?*‘(892)K+, r&r+, K-K+x+, and(More)
J. Adler, J. J. Becker, G.T. Blaylock, T. Bolton, J.C. Brient, J.S. Brown, K.O. Bunnell, M. Burchell, T.H. Burnett, R.E. C&sell, D. Coffman, V. Cook, D.H. Coward, D.E. Dorfan, J.Drinkard, G.P. Dubois, A.L. Duncan, G. Eigen, K.F. Einsweiler, B.I. Eisenstein, T. Reese, C. Gatto, G. Gladding, C. Grab, R.P. Hamilton,* J. Hauser, C.A. Heasch, D.G. Hitlin, J.M.(More)