LCLS Phase I Upgrade; IOC CAMAC Support Requirements

Robert C. SassSheng PengLCLS Upgrade Review

June19 20081

IOC Requirements

LCLS Phase I Upgrade; IOC CAMAC Support Requirements

Robert C. SassSheng Peng


June19 20082

IOC Requirements

Overview

GeneralDatabaseCamac I/OSupported Camac Modules360Hz ProcessingCrate ManagementAnalog Inputs and OutputsDigital Inputs & OutputsKlystron SupportTiming SupportBPM SupportMagnet SupportRemote Camac OperationUnresolved Issues


June19 20083

IOC Requirements

General

No support for SLC message service or database

No support for powerfail recovery of a crateA reboot is necessary if a crate fails and is brought back online

No support for the old MPS systemWe assume that the new MPS will be fully functional

Support only for the following micros:LI20-LI30

CA01, CA11 MC00, AB01, CB00, FB31?


June19 20084

IOC Requirements

Database

Mostly automated tool to translate relevant SLC database primaries for supported micros to EPICS database records.

All relevant crates and supported modules must be translated for each micro.

PV names preserved for HLA when underlying hardware changes.EPICS database records will receive data from Camac I/O.Asynchronous records for output processing.


June19 20085

IOC Requirements

Camac I/O

Existing CAM* routines updated for the FECC project.Thread safeAll 32 bit pointersGCC compatible

Using them is the required implementation.Some Camac modules have special I/O “needs”All micro code made GCC compatible as part of the FECC projectMuch existing micro Camac code can be used with minimal change

Take advantage of new PCSD featuresThree priorities; use highest for 360HzOptional interruptsChangeable timeoutActual package execution time available


June19 20086

IOC Requirements

Supported Camac Modules

IDIM/LDIM – Isolated/Latching Digital Input Module.IDOM – Isolated Digital Output Module.SAM – Smart Analog Monitor.DAC – Digital to Analog Converter.PDU – Programmable Delay Unit.BPM – Linac Beam Position Monitor (remaining EP-BPMs replaced)PPOM – Pulsed Power Output Module.PIOP – Parallel Input/Output Processor.SBI – Subbooster Interface.PSC II – Power supply controllerSMC Stepping Motor ControllerCV - Crate Verifier (optional).


June19 20087

IOC Requirements

360Hz Processing

Only support PDU timing device.

Use high priority request of the PCSD sans interrupt.

Provide user callback mechanism at defined set of fiducial sub-harmonics.

120Hz, 60Hz, 30Hz, 10Hz, 5Hz, 1Hz, 0.5Hz

Selectable callback priority.


June19 20088

IOC Requirements

Crate Management

All crates initialized at IOC boot/reboot.Similar to what micro crate job does

Special initialization for individual modules:PDU, IDOM, SAM, PIOP

PIOP image and tmatrix available as files

No access by other threads until crate is initialized.

No access to PDU, IDOM, SAM and PIOP until they have been initialized.

Periodic crate operational check.


June19 20089

IOC Requirements

Analog Inputs and Outputs

Only the SAM is supported for analog inputs.Process all analog inputs at 1Hz.Support for the following E.U conversions:

Linear.Logarithmic.Polynomial.Ion Guage.Phase Mixer.Parabolic Interpolation. See VMS ref_rmx_anlg:polyint.f86Thermocouples. See VMS ref_rmx_anlg:thermist.f86

Calculated values.Dynamic Disk Loaded Waveguide dynamic tolerance adjustment.Interpret E.U. tolerances in two ways:

1. E.U. = Lim1 +/- Lim22. Lim1 <= E.U. <= Lim2

Analog outputs are done by each job. What conversions are needed?


June19 200810

IOC Requirements

Digital Inputs & Outputs

IDIM, LDIM and IDOM are the only digital modules supported

Process all digital inputs at 1Hz.

Process digital outputs on demand.


June19 200811

IOC Requirements

Klystron Support

Implement both types of FTP reads:OrdinarySystem Volt

Periodic status checks and trim phase.Implement all functions that update the PIOP

KLYS_UPDATE_PIOP - General PIOP updateKLYS_UPDATE_PIOP_PADONLY - Update PAD block KLYS_UPDATE_PIOP_MK2ONLY - Update MK2 blockKLYS_UPDATE_PIOP_NEWPHASE – Set new phaseKLYS_TRIM_SLED – Move SLED to position in databaseKLYS_TRIM_PHASE – Move Fox shifter within tolerance of designated phaseKLYS_PTRB_PHASE - Perturb phase by requested amountKLYS_FOXHOME - Set Fox phase shifter to home


June19 200812

IOC Requirements

Timing Support

Update of single PDU value.

Update of modulo-36 time slot counter.

May support diagnostic readout of PDU status registers and memory.


June19 200813

IOC Requirements

Individual BPM Display


June19 200814

IOC Requirements

BPM Support

No private calibrations.

PVs to support Beam Synchronous Acquisition (BSAC) functions in IOC for BPMs.

Public CalibrationSet x & y offsets attenuator and pedestal

Pulse based readout resulting in X, Y and tmit

Standard Linac BPMs map into EPICS BSACApplication PVs.


June19 200815

IOC Requirements

Magnet Support – LCLS Display


June19 200816

IOC Requirements

Magnet – Individual Magnet


June19 200817

IOC Requirements

Magnet Support

Existing EPICS magnet functionSupport PSC II and SMC for EPICS magnet functions.No support for self test.PSC II is complicated

Analog output for setpoint2 Analog inputs for shunts or transductors8 bits of digital input6 bits of digital outputSelectable ramping ratesSome “special” code required e.g. set mode before ADC read, delay when switching analog inputs etc.Kristi assures me that these will map into EPICS PVs for magnet support

SMC is fairly simpleSet number of stepsStart/stopRead status and counterFront panel adjustments for acceleration and frequency


June19 200818

IOC Requirements

Remote Camac Operation

Support execution of a Camac package originating outside of the IOC.

This means rebuilding the package to use PCSD dual-ported memory.

Only accept requests and return results via Channel Access.

Should support repeated execution of a package for diagnostic purposes.


June19 200819

IOC Requirements

Unresolved Issues

FB31 Energy loop needed?

Not all PSCs in linac are needed. Can they be replaced with EPICS H/W?

Supported output conversions?

Documents

LCLS Phase I Upgrade; IOC CAMAC Support Requirements