Semi-Autonomous Controller for Data Acquisition the Brilliant ADC

Breidenbach, M.; Frank, Eliana; Hall, Jacob; Nelson, David J.

doi:10.1109/tns.1978.4329397

Cited by 37 publications

(14 citation statements)

References 2 publications

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“…The signals from the wires in the SAM tracking system were discriminated using LeCroy Research Systems LD604 chips whose threshold was set to 0.5 mV. The time delays of these discriminated signals, corresponding to the drift times in the tracking tubes, were stored in SLAC TAC C C modules [2] and digitized using SLAC BADCs [3] . The signals from the wires in the shower counter were amplified by two-stage hybrid chips with a response of approximately 3 V output for 100 pC input.…”

Section: Detector Descriptionmentioning

confidence: 99%

A luminosity monitor for the Mark II detector at the SLC

Hylen

Matthews

Bonvicini

et al. 1992

Nuclear Instruments and Methods in Physics Research Section A:

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Section: Detector Descriptionmentioning

confidence: 99%

A luminosity monitor for the Mark II detector at the SLC

Hylen

Matthews

Bonvicini

et al. 1992

Nuclear Instruments and Methods in Physics Research Section A:

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“…During the read out of a module, the analog output signals are sent to an "intelligent" digitizer (the BADC) [5]. F or each sample of the beam, 100 events are recorded at a rate of 20 Hz and the pulse heights for each strip are averaged.…”

Section: Beam Reconstructionmentioning

confidence: 99%

An alignment method for the mark II silicon strip vertex detector using an X-ray beam

Adolphsen

Gratta

Labarga

et al. 1990

Nuclear Instruments and Methods in Physics Research Section A:

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A silicon strip vertex detector consisting of 36 independent detector modules is being constructed for use in the Mark II detector at the SLAC Linear Collider. This paper describes a method for determining the relative alignment of the modules to a precision better than the 5 pm intrinsic resolution of the detectors. The basic procedure involves moving the vertex detector by known amounts through a fixed, collimated X-ray beam, and using the beam position reconstructed from the detected signals to determine the relative positions and orientations of the modules. Results from tests of the method on a subset of detectors are presented.

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“…The signal on each readout strip is amplified and shaped at the detector to drive an output line. The analog signals are sampled at the peak by CAMAC-based sample-and~ hold modules (SHAMs [89]) and digitized by 12-bit ADCs in BADC (Brilliant ADC [90]) microprocessors which also perform pedestal subtraction, gain corrections, and threshold cuts determined from periodic calibration of the electronics by the injection of a varying charge at the amplifier. The memories of the BADCs are readout by CAMAC protocol by the host VAX computer.…”

Section: -Solid Pb Segmented Pbmentioning

confidence: 99%

Searches for new quarks and leptons in Z boson decays

Kooten¹,

J²

1990

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Price: Printed Copy A08, Microfiche AOl. fAsia * Ph.D. theiif g : "---'-'-r,ow ry r T(1iS ooeu^r ,V.UM P* Abstract Searches for the decay of Z bosons into pairs of new quarks and leptons in a data sample including 455 hadronic Z decays are presented. The Z bosons were produced in electon-positron annihilations at the SLA.C Linear Collider (SLC) operating in the centerof-mass energy range from 89.2 to 93.0 GeV, and the data collected using the Mark II detector. The Standard Model provides no prediction for fermion masses and does not exclude new generations of fennions. The existence and masses of these new particles may provide valuable information to help understand the pattern of fermion masses, the presence of generations, and physics beyond the Standard Model. Specific searches for top quarks and sequential fourth generation charge -1/3 (!/) quarks are made considering a variety of possible standard and non-standard decay modes. In ad dition, searches for sequential fourth generation massive neutrinos v,i (Dirac and Majorana)and their charged lepton partners L~ are pursued. The i/ 4 may be stable or decay through mixing to the lighter generations. The data sample Is examined for new particle topolo gies of events with high-momentum isolated tracks, high-energy isolated photons, spherical event shapes, and detached vertices. Measurements of the Z boson resonance parameters that provide crucial indicators of new particle production are also considered.No evidence is observed for the production of new quarks and leptons. 95% confidence lower mass limits of 40.7 GeV/c 2 for the top quark and 42.0 GeV/c 2 for the t'-quark mass are obtained regardless of the branching fractions to the considered decay modes. A significant range of mixing matrix elements of v.\ to other generation neutrinos for a v A mass from 1 GeV/c 2 to 43 GeV/c 2 is excluded at 95% confidence level. Measurements of the upper limit of the invisible width of the Z exclude additional values of the u 4 mass and mixing matrix elements, and also permit the exclusion of a region in the L~ mass versus v.\ mass plane.ii These results substantially extend previous limits, and exclude a large fraction of the *.mass range available for Z decays into top quarks and fourth generation quarks and leptons. #"This thesis analysis benefited greatly from illuminating and helpful discussions with several people. The enthusiasm and energy of Tim Barklow, the knowledge of Sachio Komamiya, and the wisdom of a close friend, Chang-Kee Jung have been a source of inspiration for me.I would like to thank the Mark II collaborators for their contributions during the some times frustrating operation of the Mark II detector at the SLC. I am just as grateful for the camaraderie and friendship of my colleagues. My office mates Carrie Fordham and graduate student (now post-doc) extraordinaire, Jordan Nash, provided many interesting conversations and company. , and others too numerous to name have all made for a great experience. I extend my thanks to Anna Pacheco for the countless...

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Semi-Autonomous Controller for Data Acquisition the Brilliant ADC

Cited by 37 publications

References 2 publications

A luminosity monitor for the Mark II detector at the SLC

A luminosity monitor for the Mark II detector at the SLC

An alignment method for the mark II silicon strip vertex detector using an X-ray beam

Searches for new quarks and leptons in Z boson decays

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