LCLS Magnet Control

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

LCLS Magnet Control

Challenging Design Issues“How to integrate the legacy system with the new”

Subsystem architecture Magnet IOC Design

Interface to legacy control system - SLC EPICS Record Processing EPICS SNL (EPICS device/driver support)

Displays

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Thank-yous

Interface to legacy SLC control system:

Stephanie Allison, Diane Fairley,

Ron Chestnut and group,

Ron McKenzie

Magnet Control:

Kristi Luchini, Stephanie Allison

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

LCLS Conceptual Diagram

SLAC linac tunnel research yard

Linac-1L 9 m

Linac-2L 330 m

Linac-3L 550 m

BC-1L 6 m

BC-2L 22 m LTU

L =275 m

undulator21-3b21-3b24-6d24-6d

25-1a25-1a30-8c30-8c

L0-A,B

L0-A,B

rfgun

XXT

-Cav

T-C

av

T-Cav

T-Cav

Dump

21-1b21-1b21-1d21-1d

Spect.Spect.

January 2007 Commissioning:

~ 90 Magnets Mostly all new

existing linacexisting linac

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Design Issues

At least in the “short term”, LCLS wants to leverage the usage of legacy SLC control system high level physics applications …

1. New magnets must be controlled and monitored from legacy SLC – with minimal code modification to SLC (VMS, Fortran, assembly etc)

2. New magnets will use EPICS for control

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

How do we integrate the legacy system with the new EPICS controlled system?

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Proxy

SLC - VMS

CA Clients

Legacy and New Magnet Subsystem Architectures

SCP

Ethernet

CAMAC

SLC Micro(RMX)

SLAC EthernetPS Controller

Legacy

SLC net

CAServer

HL Apps

SCOR

Bulk PSPS PSBulk PS

Large PSController

MCOR

Ethernet

New

Any OS SCP

PEP-IISLC Micro

(RMX)

IOCMVME 6100 RTEMS 4.7

EPICS R.14.8.2

EDM

CACA

PEP-IIVME//VXI

IOC

New HL Apps

DB

EPICS Control-

Alpha

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

CA Clients

Answer: SLC-Aware IOC

SCP

Ethernet (LCLSnet)

CAMAC

SLC Micro(RMX)

SLAC EthernetPS Controller

SLC net

SLC - VMS

CAServer

HL Apps

SCOR

Bulk PSPS PSBulk PS

Large PSController

MCOR

(LEBnet)

Any OS SCP

VME Crate (RTEMS)

EDM

CA

New HL Apps

DB

SLC-Aware IOC

EPICS Control- Proxy

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Magnet SLC-Aware IOC Architecture

libCom + libCom OSI

libraries

Runtime DB Access

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Design Issues

1,2, Solved: Communication bridges in place between the old and the new

3. There are two distinct databases:SLC

EPICS

How to synchronize?

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

SLC-Aware DB Synchronization

Monitors

EPICS setpoints / readbacks

Periodic comparison

SLC setpoints/ readbacks

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

EPICS Databases

Per devicePolynomial Coefficients (provided by MMF)B field settings: user, feedback, HLApps;

tolerance, limits settings; B->I conversionsRaw Current settings; I->B conversionsPower Supply Controller I/Fs: interlocks, setpoints, readbacksControl functions

Master Control DB (incl. on/off, reset, zero current)Supporting DBs: Trim, Standardize, Calibrate, Feedback

Status – SLC, EPICS, and Summaries

Per IOC - Multi-selection of devices; multi-function, (new!)Template and substitution files using macros

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Sequencer SNLs

Per device, handles -“More complicated” control functions

Trim, Calibrate, Standardize,…

Transitions between steady statesTimeoutsUser AbortError conditions and message reporting

Per IOC -Multi-select devices/functions, abort

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Magnet Device SNL for:

- Trim- Calibration- Standardize

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

EPICS Magnet Facility- Record Processing / SNL

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Displays – for January 2007 Commissioning

Legacy SLC SCP DisplaysControl and monitor all magnetsCorrelation plots, orbit fit, orbit display, orbit correction, bump calculation, power steering, multi-knobs, …

EPICS EDM DisplaysControl and monitor new magnets; monitor existingPerform more than one function at a time More status available

Legacy and EDM overlap functionalityStatus color code maintained SLC Status, SLC DB maintainedMagnet functions controlled similarly, except for multi-functionSLC DB name annotations are on EDM

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Sample legacy control display

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

SCP – All UnitsSample legacystatusdisplay

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Sample EDM displays …

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Conclusions

SLC-Aware IOC will pay off for LCLS Integrates legacy system to new Allows usage of a rich set of existing legacy HLApps Buys time Made possible by the EPICS OSI libraries Endian issues were a pain

Users are excited for EPICS controlled magnets Better GUIs Multi-function magnet control

Debbie Rogind

LCLS Magnet Control drogind@slac.stanford.edu

June 15, 2006

Thank-you for being a magnetic audience!