Gary Sergey

Pan-da And Beyond Data Acquisition For the Next Generation Experiments

We report on the status of the PAN-DA data acquisition system presented at the last Real Time Conference. Since that time, PAN-DA has been successfully used in the fixed target program at Fermilab. We also report on the plans and strategies for development of a new data acquisition system for the next generation of fixed target experiments at Fermilab. 10 refs., 3 figs.

The Low-Resolution Spectrograph of the Hobby-Eberly Telescope. II. Observations of quasar candidates from the Sloan Digital Sky Survey

ABSTRACT This paper describes spectra of quasar candidates acquired during the commissioning phase of the Low‐Resolution Spectrograph of the Hobby‐Eberly Telescope. The objects were identified as possible quasars from multicolor image data from the Sloan Digital Sky Survey. The 10 sources had typical r \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape

Remote Procedure Execution software for distributed systems

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The PAN-DA data acquisition system

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Data acquisition systems for the Sloan Digital Sky Survey

The Remote Procedure Execution (RPX) software, which facilitates the construction of distributed software systems spanning computers of various types, is discussed. Programmers who use the RPX package specify subroutine calls that are to be executed on a remote computer. RPX is used to generate code for dummy routines that transmit input parameters and receive output parameters as well as for a main program that receives procedure call requests, calls the requested procedure, and returns the result. The package automatically performs data-type conversions and uses an appropriate connection-oriented protocol. >

Software for the Fermilab FASTBUS Smart Crate Controller

The VAXONLINE data acquisition package has been extended to include a VME-based data path. The resulting environment, PAN-DA, provides a high throughput for logging, filtering, formatting, and selecting events. The authors describe the history and rationale of the system, the VME hardware modules, PAN-DA systems coordination, and system connectivity. >

The Sloan Digital Sky Survey's use of the Web

The Sloan Digital Sky Survey will image (Pi) steradians about the north galactic cap in five filters, and acquire one million spectra using a dedicated 2.5 m telescope at the Apache Point Observatory in New Mexico. We describe the data acquisition system for the surveys three main detectors: an imaging camera, mounting 54 Tektronix charge-coupled devices (CCD); a pair of spectrographs, each mounting a pair of CCDs; and a smaller monitor telescope camera. We describe the systems hardware and software architecture, and relate it to the surveys special requirements for high reliability and need to understand its instrumentation in order to produce a consistent survey over a five year period.

Development of the Sloan Digital Sky Survey online systems

We report on software developed in support of the Fermilab FASTBUS Smart Crate Controller. This software includes a full suite of diagnostics, support for FASTBUS Standard Routines, and extended software to allow communication over the RS-232 and Ethernet ports. The communication software supports remote procedure call execution from a host VAX or Unix system. The software supported on the FSCC forms part of the PAN-DA software system which supports the functions of front end readout controllers and event builders in multiprocessor, multilevel. distributed data acquisition systems.

Software Standards, Methods and Quality Control for the Sloan Digital Sky Survey

Abstract Fermilab, as one of the Sloan Digital Sky Survey collaborators, primarily uses the World-Wide Web to disseminate information about project software and software engineering practices.

Sloan Digital Sky Survey monitor telescope system

The Sloan Digital Sky Survey (SDSS) is an astrophysics project to produce a three dimensional map of a quarter of the Universe. We present a description of the SDSS prototype, the Drift Scan Camera (DSC) online system, which is operational and currently being deployed. We also present the status of the development of the SDSS online system. The hardware and software architectures for both systems are provided. >