LCLS Controls and Data Acquisition September 23, 2004

1
LCLS Controls and Data Acquisition September
23, 2004
Outline

• Control System Architecture
• Control System Delivery Schedule for
  commissioning
• High level applications (including data
  acquisition)
• Areas of concern

2
Introduction

• Control system will evolve with machine needs
• Control system commissioning needs to be
  incorporated in the schedule
• Need to prioritize control system needs
• Which devices need to be read/controlled
• Which application packages
• How much automation needed in a measurement
• Flexibility to adopt applications from SLC and
  other labs

3
Integration with the SLC Control System
EPICS W/S Distributed Applications
SLC Alpha All High Level Apps
EPICS W/S Distributed Applications
EPICS W/S Distributed Applications
Xterm
Xterm
Xterm
EPICS W/S Distributed Applications
Xterm
EPICS WS Distributed High Level Applications
SLC Net (Data Communication)
KISNet (fast closed loop control data)
PNet (Pulse ID / User ID)
MPG
Ethernet (EPICS Protocol)
micro
Design Provides SLC Data available to
EPICS EPICS data available to SLC PNET timing
info into EPICS
I/OC (SLC-aware)
EVG
P N E T R C V R
Micro emulator
Camac I/O
RF reference clock
4
Global Buses Meet LCLS Requirements
EPICS W/S Distributed Applications
EPICS W/S Distributed Applications
SLC Alpha Apps
EPICS W/S Distributed Applications
Xterm
Xterm
EPICS W/S Distributed Applications
Xterm
EPICS WS Distributed High Level Applications
Xterm
Fast Feedback
SLC-Net over Ethernet
Channel Access over Ethernet
HPRF I/O Boards
E VG
LLRF
EVR
Diag
EVR
EVR
Power Supply Ctrl
PNETRCVR
C P U
C P U
C P U
C P U
Vacuum Ctrl
IOC
IOC
IOC
IOC
16 triggers
16 triggers
Single Bunch Beam Dumper
Drive Laser Off
Machine Protection
Beam Code EPICS Time EPICS Events
5
Delivery Schedule 2006
May RF Conditioning start injector
Timing
LLRF Vacuum Gateway
operational from SLC to EPICS Data
Archiving RF Automatic Conditioning of
Cavities? Personnel Protection
Injector Area August First UV on cathode

Power Supply Control BPMs and Profile
Monitors Machine Protection System (To
laser)
6
Delivery Schedule 2007
May First Beam on Linac Axis SLC
high level applications (SLC-aware IOC)
Wire Scanners
7
Delivery Schedule 2008
June Start Undulator Commissioning
Fast Feedback Personnel Protection LTU
and Undulator Area Machine Protection
System (To kicker and laser)
What tools are needed for X-ray Transport?
8
High Level Applications

• The controls software used by physicists and
  accelerator operators to
• will be EPICS control panels (edm)
• keep the beam running stably in the optimized
  state
• tune or optimize the beam
• monitor performance for long-term optimization
• diagnose problems with machine performance
• detect, prioritize and notify of fault conditions

9
High Level Applications

• Generic diagnostic packages
• Beam orbit display
• Wire scanner user interface
• Profile monitor user interface
• Generic tuning packages
• Multiknob facility
• Deterministic correlation plot package
• Buffered data acquisition
• Specialist tuning packages
• Transverse emittance reconstruction
• Beta matching
• Bunch length measurement
• Slice emittance measurement
• Beam line online modeling
• Power steering
• Linac energy management

10
High Level Applications

• Related software
• Fast feedback system
• Configuration control (needs RDB)
• Data archiver enhanced version of the history
  plot package
• Archive data viewer 1 access to data from any
  archive
• Error logging
• Alarm handling - watchdog facility to scan and
  determine severity of out-of-tolerance devices.
• Image analysis and fitting package

11
Closer look at data archiver

• 3 types of data to archive
• signals from BPM and other gated devices (N
  scalers with timestamp). N160 BPMs3 9
  toroids 19 wire scanner readout devices other
  devices (beam loss monitors and ion chambers)
• video data (15 frames/sec of 1 Mpixel data), 1
  camera at a time
• machine parameters and ambient conditions (10K
  channels with timestamp, once a minute)
• What is needed here?
• 160 BPMs synchronously at some rate? Forever.
  1Hz, 10Hz, 20 Hz?
• What about archive viewing?
• Any need to keep circular buffers and trigger
  them on some event? Like an MPS trip?

12
Areas of Concern 1

• Matlab vs XAL
• Matlab is needed for physicists to create
  on-the-fly applications. Direct access to control
  system parameters with time stamps will be
  provided.
• Which operator applications might be done in
  Matlab or XAL? Who should participate in the
  decision? When do we need to decide?
• Chris Allen (LANL) giving presentation Automated
  Charged Particle Beam Steering (XAL) Thurs.
  Sept.30, 2-4 p.m. SSRL 3rd floor

13
Areas of Concern 2

• What are we using for a relational database
  (RDB)?
• Needed for configuration control and online
  modeling
• We are late getting started on this
• There is still no money to start it

14
Areas of Concern 3

• The Control System needs time for Commissioning!!
• Make subsystem schedules with time for this
• Provide support for operating the equipment to
  ensure proper operation through the control
  system.

15
Conclusions

• The control system architecture supports the
  requirements.
• Information is needed from the project regarding
  the dates the equipment is required.
• To support commissioning tools, we must get some
  resources to support RDB and determine a platform
  for these tools.
• Information is needed to ensure that data
  acquisition system supports the requirements
• Subsystem engineers must include time to
  commission the control system.
• Information is needed from the physicists
  regarding what tuning scenarios they will need so
  that the appropriate application software is
  avail (e.g slice emittance msmt).

16
Timing
Nsec resolution on the timing gates produced from
the Event Rcvr 20 psec jitter pulse to
pulse Event generator passes along beam code data
from SLC Event generator sends events to
receivers including 360 Hz, 120 Hz, 10 Hz and 1
Hz fiducials (per subsys) 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
Master Pattern Generator 128 bit beam code _at_
360 Hz
FIDO
119 MHz w/ 360 Hz fiducial
Vacuum Ctrl
E VG
LLRF
EVR
Diag
EVR
EVR
Power Supply Ctrl
C P U
P N E T RCVR
C P U
C P U
HPRF I/O Boards
C P U
IOC
IOC
IOC
16 triggers
16 triggers
Single Bunch Beam Dumper
Drive Laser Off
Machine Protection
Beam Code EPICS Time EPICS Events
17
SLC Net Micro Communication
Provides data to SLC Applications from
EPICS Operates at 10 Hz (not beam
synched) Requires significant development in the
IOC to emulate SLC micro in the IOC On an
application by application basis we will evaluate
what functions to provide LIST HERE WHAT IS
ON?NOT ON THE LIST?
SLC Alpha Apps
Xterm
Xterm
Xterm
Xterm
SLC-Net over Ethernet
Vacuum Ctrl
C P U
LLRF
EVR
Diag
EVR
HPRF I/O Boards
EVR
Power Supply Ctrl
PNETRCVR
E VG
C P U
C P U
C P U
IOC
IOC
IOC
IOC
18
Channel Access
EPICS W/S Distributed Applications
SLC Alpha Apps
EPICS W/S Distributed Applications
Xterm
Xterm
EPICS W/S Distributed Applications
Xterm
EPICS WS Distributed High Level Applications
Xterm
Channel Access
Vacuum Ctrl
C P U
E VG
LLRF
EVR
Diag
EVR
HPRF I/O Boards
EVR
Power Supply Ctrl
PNETRCVR
C P U
C P U
C P U
IOC
IOC
IOC
IOC
A channel access server in SLC provides data from
existing SLC micros to EPICS applications All
IOCs have both a channel access server to allow
access and a client to have access Channel access
provides read/write by all clients to all data
with a server. All EPICS high level applications
are channel access clients that may or may not
have a server.
19
Global Communication
Fast feedback is required to run at 120 Hz Values
will be transmitted from RF and selected
diagnostics to Power Supply and RF IOCs The
communication needs to be reliable, verifiable,
and have a well thought out degradation The
entire time budget to read, transmit, commute,
control, and settle is 8.3 msec First estimates
are that the control system can use 2 msecs to
transmit and receive the data Can this be done
over a common Ethernet with adequate bandwidth
or is a dedicated one needed?
Fast Feedback
Vacuum Ctrl
E VG
LLRF
EVR
Diag
EVR
EVR
Power Supply Ctrl
C P U
PNETRCVR
C P U
C P U
HPRF I/O Boards
C P U
IOC
IOC
IOC
20
Machine Protection
Machine protection is used here to define faults
requiring global mitigation Response time is
under 8 msec There are two mitigation
devices Single Beam Dumper - which prohibits
the beam from entering the undulator Drive Laser
Off which prohibits beam from entering the
cavity Action must also be taken to reduce the
repetition rate of the beam This new design is
required to interrupt the beam before the next
beam pulse.
Vacuum Ctrl
E VG
LLRF
EVR
Diag
EVR
HPRF I/O Boards
EVR
Par Supply Ctrl
C P U
PNETRCVR
C P U
C P U
C P U
IOC
IOC
IOC
IOC
Single Beam Dumper
Drive Laser Off
Machine Protection
21
Controls Commissioning in WBS
Global Controls Commissioning 16,045
RF Conditioning Controls Commissioning 8/10/2006 10/12/2006 SL_CP Hrs 315
RF Gun Ops with Beam-Controls Comissioning-A 3/9/2007 6/8/2007 SL_CP Hrs 455
RF Gun Ops with Beam-Controls Comissioning-B 3/9/2007 3/28/2007 SL_CP Hrs 98
L0-1L0-2 Controls Commissioning 3/29/2007 6/28/2007 SL_CP Hrs 455
L0SAB Controls Commissioning 4/24/2007 5/25/2007 SL_CP Hrs 520
DL1 Controls Commissioning 4/11/2007 5/18/2007 SL_CP Hrs 520
Injector Controls Optimization Commissioning 10/2/2007 9/25/2008 SL_CP Hrs 4,220
L1-BC1 Controls Commissioning 10/16/2006 11/22/2006 SL_CP Hrs 320
L1-BC1 Controls Commissioning 10/16/2006 11/22/2006 SL_CE Hrs 120
L2-BC2-L3 Controls Commissioning 9/17/2007 11/2/2007 SL_CP Hrs 480
L2-BC2-L3 Controls Commissioning 9/17/2007 11/2/2007 SL_CE Hrs 200
LTU Dump Controls Commissioning 6/28/2007 8/21/2007 SL_CP Hrs 320
LTU Dump Controls Commissioning 6/28/2007 8/21/2007 SL_CE Hrs 160
Linac Controls Optimization Commissioning 10/2/2007 9/25/2008 SL_CP Hrs 6,926
Controls Commissioning 10/3/2006 8/2/2007 SL_CP Hrs 440
Controls Commissioning 10/3/2006 8/2/2007 SL_CE Hrs 496
22
SLC Micro Software Architecture
SLC Alpha
Users
SLC Database
Micro n
Errlog
SCP
SCP
SCP
Error Server
DBEX Server
TCP/IP
SLC Linux Proxy
TCP/IP
Requests
Replies
DB Msgs
SLC Micro n
MSG Main
DB Main
Msg Q
Msg Q
Msg Q1
Error Hndlr
Micro n

Func1 Main
Func Main
Func Main
CAMAC Modules