Browsing by Author "Traynor, Michael"
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Item Construction of the E-683 hodoscope and preliminary calibration of the E-683 main calorimeter(1990) Traynor, Michael; Mutchler, Gordon S.I have designed and constructed a muon hodoscope/veto counter for E-683 at Fermilab. Preliminary tests indicate that the efficiency of each scintillator is $\approx$99.9%, allowing the hodoscope layers to be used in coincidence mode. The calibration of the modules in the E-683 main calorimeter has been studied using muons from the 1987-88 parasitic run. Preliminary calibration reveals that the calorimeter's response is within the parameters observed in E-609. Further, new information reveals the response of calorimeter modules to different physical triggers. The response of the calorimeter modules to different voltage thresholds, neighbor cuts, and gate timings has been analyzed. Results from the 1990 parasitic run indicate that the gate timing should precede the signal by 80 ns. After developing a new program to analyze the data from the entire calorimeter, I have begun muon balancing of all the modules. (Abstract shortened with permission of author.)Item Search for evidence of photoproduction of higher-twist QCD events at Experiment 683 at Fermi National Accelerator Laboratory(1996) Traynor, Michael; Mutchler, Gordon S.Experiment 683 at Fermilab Wide Band Photon Laboratory observed events via $\gamma\rm p\to$ jets during the 1991-1992 fixed target run. The present analysis attempted to observe the higher-twist subprocess in QCD using that data to measure the p$\sb{\perp}$ spectrum via a clustering algorithm tuned to optimize the distinctive topology of higher-twist events. Results indicate a substantial k$\sb{\perp}$ promotion effect at lower p$\sb{\perp}$ and a significant NLO contribution to the photoproduction.