Description

1
SLC-Aware IOCLCLS Collaboration, April 5, 2005

• Introduction
• Description
• Issues
• Progress
• Plans for 2005

2
Integration with the SLC Control System
EPICS W/S Distributed Applications
SLC Alpha All High Level Apps
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EPICS W/S Distributed Applications
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EPICS W/S Distributed Applications
EPICS W/S Distributed Applications
EPICS WS Distributed High Level Applications
CAS
CA Gateway
SLC Net over Ethernet (Data Transfer)
PNet (Pulse ID / User ID)
CA over Ethernet (EPICS Protocol)
MPG
I/OC (SLC-aware)
EVG
Micro emulator
P N E T
I/OC (SLC-aware)
Micro emulator
micro
CAMAC I/O
Fast Feedback
RF reference clock
3
Existing VMS SLC Applications

• Configurations
• Data archive and view (History Buffer)
• Modeling programs (Comfort, Dimad)
• Correlation plots
• Multi-device knobs
• Button macros
• Orbit/Dispersion correction
• Emittance calculation
• Status display and logging
• Slow feedback control

4
SLC IOC What It Will Do

• Receive SLC messages and act on them in the same
  way as existing SLC micros for
• BPM-Like Data Acquisition (Gated ADCs) beam
  synchronous
• Magnet-Like Control and Readback (All Controlled
  Devices)
• PNET Timing Diagnostics
• Maintain its part of the VMS SLC database
• Receive the entire SLC database at initialization
  time
• Receive new setpoints at any time from the Alpha
• Send readbacks back to the Alpha on request and
  periodically
• Send setpoint changes made by external EPICS
  applications to the Alpha
• Goal same amount of network traffic as SLC
  micros

5
SLC IOC What It Wont Do

• MPS
• BITBUS Power Supply Control
• KISNET Communication
• Micro-to-Micro Communication via Alpha
• SLC-style Analog Signal Monitoring
• SLC-style Digital Input/Output
• SLC-style Error Logging (use CMLOG instead)
• SLC-style Klystron Interface
• SLC-style Video Interface
• SLC-style Timing Interface (except PNET
  diagnostics)
• Direct Hardware Access (and no support for
  virtual CAMAC commands)
• Debugging from VMS
• SLC-Style Fast Feedback Interface
• Keep static data in the EPICS and SLC database
  up-to-date

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SLC-Aware IOC Issues

• Piece-Meal functional requirements big picture
  not always clear
• Endian VMS to/from any possible EPICS platform
  (no 64 bit)
• Memory CPUs that support SLC-aware IOC need
  memory
• Restart SLC tasks without restarting the IOC
• Detail diagnostics needed via the IOC shell, a
  subset via CA
• Keeping the EPICS and SLC database in-sync 2
  master problem
• Particularly for Magnet Control
• May need to increase max number of micros in
  the SLC control system
• May need a second proxy in the SLC production
  control system
• Applications slow in developing need 2 people
  per application?

8
SLC IOC Progress Since January 26

• Team
• LCLS Controls Stephanie Allison, Kristi Luchini,
  Consultants
• ESD Software Diane Farley, Debbie Rogind, Ron
  MacKenzie, Consultants
• Weekly meetings, updates to working web page and
  requirements/design documentation
• Basic Services
• Executive, Message, Database, CMLOG Services
  Done except for final RTEMS testing and cleanup,
  identifying some new requirements (2 full-time)
• Async Utilities and Periodic Micro Health
  Update Review done, implementation in-progress
  (1 full-time)
• Changes to VMS Programs Done
• Updated development environment
• Application Services
• Device Control and Readback (Magnet) Reqts
  in-progress (1 part-time)
• PNET Timing Diagnostics no significant progress
  since January
• Gated ADC Acquisition (BPM) no progress
• Changes to VMS Programs not yet defined
• Naming Conventions First Draft done

9
SLC IOC Plans for 2005

• 2 people per application?
• Functional Requirements Reviews
• Device Control and Readback (Magnet Job) April
• PNET Timing Diags April
• Gated ADC Acq (BPM Job) June
• Design Reviews
• Device Control and Readback (Magnet Job) May
• PNET Timing Diags Late April
• Gated ADC Acq (BPM Job) July
• Implementation
• Basic services including Async and RTEMS Testing
  Mid-April
• Device Control and Readback June
• PNET Timing Diags June
• Gated ADC Acq (BPM Job) Aug
• Fully operational prototype by Oct 2005
• Ready for first beam in LINAC by May 2007

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Reference Slides Follow
11
Introduction SLC-Aware IOC
Provides data to SLC Apps from EPICS on demand
and periodically Performs requests by SLC Apps by
updating EPICS Messages over Ethernet no greater
than 10 Hz Requires significant development in
the IOC to emulate SLC micro in the IOC Used by
non-LCLS projects too
SLC Alpha Apps
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SLC-Net over Ethernet
Vacuum Ctrl
E VG
LLRF
EVR
Diag
EVR
EVR
Pwr Supply Ctrl
C P U
C P U
C P U
HPRF I/O Boards
C P U
IOC
IOC
IOC
12
SLC Executive Design Block Diagram by Diane
Fairley
13
Message Service Design Block Diagram by Diane
Fairley
14
Database Service Design Block Diagram by Debbie
Rogind
15
IOC CMLOG Design Block Diagram by James Silva
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Timing
Nsec resolution on the timing gates produced from
the Event Receiver 50 psec jitter pulse to
pulse PNET module gets beam code data from Master
Pattern Generator Beam code data transferred to
Event Generator Event generator sends events to
receivers including 360 Hz, 120 Hz, 10 Hz and 1
Hz fiducials last beam pulse OK Machine
mode EPICS time stamp Event receivers produce to
the IOC interrupts on events data from the
event generator in registers 16 triggers with
configurable delay and width
476 MHz RF Reference
SLC micro
MPG
FIDO
119 MHz w/ 360 Hz fiducial
128 bit beam code _at_ 360 Hz
Vacuum Ctrl
EVR
Diag
EVR
Power Supply Ctrl
C P U
E VG
L L R F
EVR
P N E T
C P U
C P U
C P U
IOC
IOC
IOC
16 triggers
16 triggers
Drive Laser Off
Machine Protection
Beam Code EPICS Time EPICS Events