Controls Overview
April 7, 2005
Outline
ES&H
Goals
FAC Responses
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 7, 2005
FAC - Controls Overview
.
LCLS Control Group
Lcls-controls@slac.stanford.edu
LCLS Control System ES&H
PPS for the Injector is designed. Citizen
Review is in June.
Internal design review of wiring, racks, and
AC distribution will be done for existing and
new designs to determine safety and noise
issues.
All personnel has up to date safety training
for required work.
April 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
LCLS Control Group
Lcls-controls@slac.stanford.edu
FAC Responses (1)
Global standards are required
Project Engineers are working toward these standards in all
subsystems. Engineers are identified for each area with the
exception of MPS.
You desperately need a central database for all project data
The Job ad is open – resumes are being accepted now.
We’ve started to evaluate the SNS and Argonne databases.
SLC-aware IOC good progress prototyping, still lack
functional requirements and top level design decisions on
Applications and which should be EPICs vs SLC.
We have identified two high level application engineers. The priority
of applications has not been written but guidance will come from
Patrick.
April 7, 2005
FAC - Controls Overview
LCLS Control Group
Lcls-controls@slac.stanford.edu
FAC Responses (2)
X-ray beam line controls requirements must be
defined
Steve Lewis is in place and is in the process of listing all
controls in the XTOD
BPM location and anchoring must be decided
See Patrick’s talk for discussion of the issues. Not yet
fully resolved.
Undulator BPM performance requirements should
be articulated including max working range
Done See Patrick’s talk
next week Patrick, Till, Bob and Lill meet to discuss the
engineering specifications
April 7, 2005
FAC - Controls Overview
LCLS Control Group
Lcls-controls@slac.stanford.edu
FAC Responses (3)
The engineering process seems to be proceeding without
explicit requirements and reviews. An example of this is the
PNET module
Work groups for all subsystems are in place (except MPS)
These groups jointly develop requirements and design
High level ESDs should be complete this month.
All detailed ESDs are in progress and will be complete in 6 months
Where is global controls on the org chart?
All design and integration effort is now in 1.1.3.5
Subsystem equipment and implementation is in x.x.2
Signature authority on x.x.2 is global controls and x.x system
managers
April 7, 2005
FAC - Controls Overview
LCLS Control Group
Lcls-controls@slac.stanford.edu
FAC Responses (4)
Can we get x-band klystrons and waveguides from
the NLCTA?
We can get klystrons, elbows, converters – but we need
to make the waveguide runs. (In the LINAC scope of
work)
Injector laser controls interface needs close
communication between vendor, controls group
and laser experts/operators
Requirement for 500 msec time stamp was in spec.
Vendor is selected and controls will meet with them to
complete the interface
April 7, 2005
FAC - Controls Overview
LCLS Control Group
Lcls-controls@slac.stanford.edu
FAC Responses (5)
Follow new code requirements for low-smoke
fireproof cables
Done
It is unclear how to design feedback to control Xband phase- explore "dithering".
Addressed in Patrick’s talk – compensating drifts in the X
band system with beam based feedback in the S Band.
April 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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
April 7, 2005
FAC - Controls Overview
Micro
E emulator
I/OC
V
G (SLC-aware)
RF reference clock
LCLS Control Group
Lcls-controls@slac.stanford.edu
SLC-Aware IOC
April 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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 7, 2005
FAC - Controls Overview
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
Drive
Laser
Off
E E
V V LLRF
G R
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 7, 2005
FAC - Controls Overview
C
P Vacuum
U
Ctrl
LCLS Control Group
Lcls-controls@slac.stanford.edu