Insertion Device Control System

1
Control System for a Helical Undulator

• Pete Owens
• Daresbury Laboratory

2
Diamond Procurement Phase

• The Diamond project requires the design, build
  and testing of a control system for an out of
  vacuum helical Undulator Insertion Device

3
Wish List

• Seamless integration with rest of control system
• Common use of tools
• Consistent look and feel of user applications
• Use of common hardware and drivers
• Development environment
• Flexibility for future developments

4
What Is a Helical Undulator?
5
An Undulator
electron beam
6
A Helical Undulator
7
Structure
8
Basic Requirements for Control

• Motion Control
• Servo motors encoders
• Equipment Protection
• Prudent operating window
• Limit switches
• Trimming Magnets
• Power supplies

9
Motion Control
1
2
5
Phase
Gap
Taper
6
3
4
10
Equipment Protection

• Implemented in PLC
• Two Level System
• Safe Operating Window
• Absolute Operating Window
• Monitor Inputs
• Limit Switches
• Tilt Switches
• Absolute Encoder Values
• Emergency Stop Button

11
Trimming Magnets

• Compensate for end field effects
• 8 Coils
• 4 DC power supplies
• Operated in synchronism with motion

12
Hardware

• Specifications Issued for
• VME 64x Crates
• Processor cards
• IO modules (IP cards)
• Free Issue VME Hardware
• PLC
• Alan Bradley Compact Logix
• (DF1 via RS232) or
• Siemens S7/300 (Ethernet)

13
IOC

• Free Issue Standard Hardware

7 Slot VME 64x Crate
IP Carrier
ADC, DAC, digital I/O
IP Carrier
Hytec Octal RS232
IP Carrier
SLS PSU Controllers
Motor Controller
OMS VME58-8S
Reserved
for event receiver
Empty
for bus analyser
Processor
Motorolla 5100 PPC
14
Operational Software Requirements

• Single Axis / Set-up
• Gap/Phase
• Tracking
• Detailed Display Screens

15
EPICS Database

• Visual DCT
• Naming Convention
• SR23S-ID-SERVO-05MOTOR
• SR23S-ID-TRIM-03V
• SR23S-ID-TRIM-03SETV
• SR23S-ID-HU64-01GAP

16
User Interface

• EDM
• Style Guide
• Example Panels

17
Development Environment

• Loan of Development Environment
• Linux PC
• VxWorks BSP
• EPICS base extensions
• Tools - EDM, Visual DCT etc.
• Drivers for standard hardware - with example
  applications
• Documentation
• Initial Training
• Courses arranged at 6 month intervals

18
Control System for a Helical Undulator

• Pete Owens
• Daresbury Laboratory