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ACKNOWLEDGMENTS
Slow Controls for Beam-Line Devices in Hall B at CEBAF
Yannick Patois
1997
ACKNOWLEDGMENTS
List of Tables
List of Figures
Introduction
CLAS at Jefferson Lab
The Accelerator
The Halls
CLAS, the Hall B detector
Experiments with CLAS
The Beam Line
The beamline devices
Accelerator division devices
The Möller polarimeter
Devices used for generating and controlling the photon beam
Some other important beamline devices
The EPICS environment for Slow Controls
A short introduction to EPICS and it's implementation in Hall B
EPICS in a few words
EPICS hardware
Software
Operation system and development tools
Typical application
Some of the record and hardware used
What is a record ?
Simple records
The Stepper Motor record and hardware
The hardware
The scaler record and hardware
The Hardware
Important remark about the scaler record code
Beamline EPICS applications
General information for developers
The GUI_launch GUI
Overview
How to launch it
How to use it
Hardware and Software
File informations
The Harp GUI
Overview
How to launch it
How to use it
What to look at ?
What to do ?
Many buttons and some displays
Hardware and Software
File informations
The Scaler GUI
Overview
How to launch it
How to use it
What to look at ?
What to do ?
hardware and software
File informations
The Collimator GUI
Overview
How to launch it
How to use it
What to look at ?
What to do ?
Hardware and Software
File informations
The Forward Scaler GUI
Overview
How to launch it
How to use it
What to do ?
Hardware and Software
Files Information
The Converter GUI
Overview
How to launch it
How to use it
a few buttons and some displays
Hardware and Software
File informations
Fast Scan
Scans
Why scanning the beam ?
Some Basic theory
Presuppositions
A perfect beam
The ellipsoidal beam
The actual implementation
The SNL routine
Software to analyze the scans
Configuration
Analysis of the beam scans
A first look at the scans zoology
Methodology for scans analysis
Non fitted scans
Cuts on the reduced
Cuts on the errors of the fit
Acceptable sigma
The Quality Factor
Conclusion
References
Source files
About this document ...
Garp
patois@cebaf.gov
