Controls Overview
April 27, 2005
Outline
Goals
Status update
Resources
Design Slides for Global Systems
Task descriptions
Next 6 months
Conclusions
•
Note: As this is being recorded – please add ” it is my impression” and “we expect “ wherever appropriate
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
.
LCLS Control System Goals
Provide a fully integrated control system to support the
construction, test, installation, integration, operation and
automation of the LCLS Accelerator
Standardize on all devices and components across all
subsystems.
Identify all data either by pulse id, beam pulse related time
stamp, or 500 msec rough time stamp.
Full integration with the SLC – timing, use of LCLS data in
SLC high level applications, and use of SLC data in LCL
Provide an upgrade path for the SLC
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
Update May 2004 – April 2005 (1)
3 month continuing resolution
WBS reorganized to move all design work into 1.1.3.5
under direction of the control group
Acquire personnel
8 project engineers – Koturri, Lucchini, Allison, Straumann, Murray,
Fairley, Rogind, (offers being made to junior engineer, jobs open for
junior proj. eng)
1 low level programmer (offer being made to junior engineer)
2 EE/ board designers – (support from ESD, evaluating existing
designs, interviewing
Steve Lewis on controls at LLNL
Conventional Facilities, Wiring, Racks, and Power Distribution –
Ortega (lead), ESD support, need to hire
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
Update May 2004 – April 2005 (2)
Facility Controls, XRay Transport are integrated into control
design (details remain)
Rack Layout, Tray Design, and wiring penetrations for
Injector, L01 through BC1. LTU is 50% complete.
Prototypes in test:
PNet – hardware design complete, driver functional, tests needed
Timing – hardware from SLS being put into test
Power Supply – hardware from SLS in test for stability and precision
Video – cameras in test
SLC-Aware IOC is 70% complete.
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
Update May 2004 – April 2005 (3)
Design efforts ready for prototyping: LLRF
and BPM
Prototypes needed
120 Hz fast feedback
position controllers
Machine Protection
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
Personnel – Resources
Ctl. Elec. Engineer
Ctl. Sr. Elec. Tech.
Ctl. Elec Tech.
Pwr. Elec. Engineer
Pwr. Sr. Elec. Tech.
Control Prog.
2004
2.42
.56
.07
1.94
.42
.81
2005
10.37
3.44
.60
1.39
.86
10.18
2006
8.12
2.66
2.20
.32
.31
10.29
Ramp up plan: offset
3 months. We are
borrowing most of our
hardware support. We
need some LCLS inhouse support
April 27, 2005
EPICS Collaboration Meeting
2007
6.07
1.90
4.63
.51
.72
6.32
2008
3.26
.77
.62
.10
.05
6.56
Total
30.24
9.33
8.12
4.26
2.37
34.17
Will be reworked
after hardware
designs are reviewed
and finalized.
LCLS Control Group
Lcls-controls@slac.stanford.edu
Integration with the SLC Control System
SLC
Alpha
All High
Level
Apps
EPICS
EPICS
EPICS
W/S
EPICSWS
W/S
EPICS
W/S
Distributed
W/S
Distributed
Distributed
Distributed
Applications
Distributed
Applications
High Level
Applications
Applications
Applications
Xterm
Xterm
Xterm
Xterm
SLC Net (Data Communication)
KISNet (fast closed loop control data)
PNet (Pulse ID / User ID)
MPG
Ethernet (EPICS Protocol)
micro
Camac
I/O
Micro
E emulator
I/OC
V
G (SLC-aware)
RF reference clock
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
SLC-Aware IOC
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
System Design
SLC
Alpha
Apps
EPICS
EPICS
EPICS
W/S
EPICSWS
W/S
EPICS
W/S
Distributed
W/S
Distributed
Distributed
Distributed
Applications
Distributed
Applications
High Level
Applications
Applications
Applications
Xterm
Xterm
Xterm
Xterm
Fast Feedback over Ethernet?
SLC-Net over Ethernet
Channel Access
IOC
C
P
U
E E
HPRF
V V LLRF
I/O
G R
Boards
IOC
16 triggers
Drive
Laser
Off
C
P
U
E
V
R
IOC
Diag
C
P
U
E Pwr
V Supply
R Ctrl
16 triggers
Single
Bunch
Beam
Dumper
Machine Protection
Beam Code + EPICS Time + EPICS Events
April 27, 2005
EPICS Collaboration Meeting
C
P Vacuum
U Ctrl
LCLS Control Group
Lcls-controls@slac.stanford.edu
LCLS Project Engineering Tasks
1 RF Control - Koturri
3 Diagnostics – Straumann, Murray, tbd
Toroids & Faraday Cups, Beam Stops, Profile Monitors & Video Devices, Wire, Scanners,
Bunch Length Monitors & E/O Diagnostics, Beam Position Monitors, Collimators, All
other stops
Gun Laser and Drive Control – Contract Out
1 Vacuum – Steve Lewis supporting the design now / Job Ad Open
1 Magnet Power Supply Control IOC and software - Luchini
1 Beam Containment / Personnel Protection / Machine Protection - Chevstov
1 Low Level Engineer - Norum
2 High Level Application Engineers – Fairley, Rogind
1 RDB Manager – job ad placed
1 System manager – need to place job ad
Resolve/Formalize Group Leader – currently co-managed Bob and Patrick
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
LCLS Software Tasks –
Purchase/Steal/Develop
SLC-aware IOC – 70% complete. Expected completion July 1, 2005.
Machine Protection / Mitigation (look at SNS and JLAB)
Master pattern generator (look at PSI/Diamond) – being set up
Fast Feedback Communication – need to prototype
High Level Applications (Matlab or XAL)
Correlation Plots (look at JLab)
Fast Feedback Loops
Emittance reconstruction from wire scans and profile monitors
Profile monitor image analysis for slice emittance with the transverse cavity
Beam Steering and online orbit modeling
Beam Steering “scans” to emittance reconstruction from wire scans and
profile monitors
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
LCLS Software Tasks –
Purchase/Steal/Develop
Data Archiving to support all phases of the project
(SNS)
Operator Display Tools / Synoptic, Plots, Waveform,
Image (EDM)
Alarm Management (ALH, CMLOG)
Electronic Log (DESY, JLAB)
High Level Application Support: Matlab, XAL, Python
Control System Configuration Tools (VDCT, RDB)
Relational Database Management in all project
aspects (Based on SNS, PEP)
Naming Standard (PEP)
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
LCLS Hardware Tasks –
Purchase/Steal/Develop (1)
Global
New timing boards – Master Pattern Generator and Event Receiver Boards
(PSI,DIAMOND)
Machine Protection System (SNS/JLAB) – needs to be evaluated
RF Control – In-house analog with COTS ADCs and DACs
Diagnostics
Toroids & Faraday Cups
Beam Stops
Profile Monitors & Video Devices – evaluating commercial cameras
Wire Scanners
Bunch Length Monitors & E/O Diagnostics
Beam Position Monitors – in-house analog with COTS ADCs and DACs
Collimators
All other stops
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
LCLS Hardware Tasks –
Purchase/Steal/Develop (2)
Gun Laser and Drive Control – Integrate Thales Controls either device
layer or Labview
Vacuum Standards – being finalized
Magnet Power Supply Controllers (PSI) – in test at SLAC
Beam Containment / Personnel Protection – through first review
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
Next 6 months
Finish hiring:
hardware support – EEs and Techs
Complete hiring actions on project engineers and programmers.
Acquire RDB support.
Complete detailed designs per subsystem and have them
reviewed – revamp costs – by the end of this FY.
Complete evaluation/test of PNet, Timing, LLRF, PS, MPS,
PPS, and BPM
Complete the SLC-Aware IOC
Integrate Laser Control
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
Conclusions
Control engineers are in place for most major subsystems.
The WBS has been reorganized to move all of the design
activities into global controls under 1.1.3.5. Signature
authority for all x.x.2 level WBS is shared.
The SLC-aware IOC and SLC to EPICS timing issues are
well on the way to being resolved.
Hardware components have been identified for most of the
risky areas. MPS and fast feedback need attention. PPS
needs to complete the citizen review.
By the end of this year, hardware designs should be proven
as prototypes and the schedule and budget revamped to
reflect the final design decisions.
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
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
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
@ 360 Hz
IOC
C
P
U
FIDO
119 MHz w/
360 Hz fiducial
E E
HPRF
V V LLRF
I/O
G R
Boards
IOC
16 triggers
Drive
Laser
Off
C
P
U
E
V
R
IOC
Diag
C
P
U
E Power
V Supply
R Ctrl
16 triggers
Single
Bunch
Beam
Dumper
Machine Protection
Beam Code + EPICS Time + EPICS Events
April 27, 2005
EPICS Collaboration Meeting
C
P Vacuum
U
Ctrl
LCLS Control Group
Lcls-controls@slac.stanford.edu
SLC Net “Micro” Communication
Provides data to SLC Applications from EPICS
SLC
Alpha
Apps
Operates at 10 Hz (not beam synched)
Xterm
Xterm
Xterm
Xterm
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
SLC-Net over Ethernet
IOC
C
P
U
E E
HPRF
V V LLRF
I/O
G R
Boards
April 27, 2005
EPICS Collaboration Meeting
IOC
C
P
U
E
V
R
Diag
IOC
C
P
U
E Pwr
V Supply
R Ctrl
LCLS Control Group
Lcls-controls@slac.stanford.edu
C
P Vacuum
U Ctrl
Channel Access
SLC
Alpha
Apps
EPICS
EPICS
EPICS
W/S
EPICSWS
W/S
EPICS
W/S
Distributed
W/S
Distributed
Distributed
Distributed
Applications
Distributed
Applications
High Level
Applications
Applications
Applications
Xterm
Xterm
Xterm
Xterm
Channel Access
IOC
C
P
U
E E
V V LLRF
G R
HPRF
I/O
Boards
IOC
C
P
U
E
V
R
Diag
IOC
C
P
U
E Power
V Supply
R Ctrl
C
P Vacuum
U
Ctrl
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.
April 27, 2005
EPICS Collaboration Meeting
LCLS Control Group
Lcls-controls@slac.stanford.edu
Fast Feedback
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 over Ethernet?
IOC
C
P
U
E E
HPRF
V V LLRF
I/O
G R
Boards
April 27, 2005
EPICS Collaboration Meeting
IOC
C
P
U
E
V
R
Diag
IOC
C
P
U
E Power
V Supply
R Ctrl
LCLS Control Group
Lcls-controls@slac.stanford.edu
C
P Vacuum
U Ctrl
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.
IOC
C
P
U
E E
V V LLRF
G R
Drive
Laser
Off
HPRF
I/O
Boards
IOC
C
P
U
E
V
R
Diag
IOC
C
P
U
E
Par
V Supply
R Ctrl
Single
Beam
Dumper
Machine Protection
April 27, 2005
EPICS Collaboration Meeting
C
P Vacuum
U
Ctrl
LCLS Control Group
Lcls-controls@slac.stanford.edu