RHIC PS Controls

Introduction

System Status (as of 5/3/00)

• Blue ring supplies
• used with the beam
• operations may need to start ( or stop and restart ) certain servers if
• requested by PS group or
• indicated by alarms on the RHIC Alarm Display
• controls for blue supplies should be considered operational - call for Controls help if PS group needs it
• Yellow supplies
• being used by PS group
• operations may need to start ( or stop and restart ) certain servers if
• requested by PS group or
• indicated by alarms on the RHIC Alarm Display
• controls for yellow supplies should be considered operational - call for Controls help if PS group needs it

System Components

Applications

• psall - a tool for PS diagnostics and control.   Work with one building at a time.  Displays PS status and currents.
• Power Supply Monitor & Control ( psmac) - mainly used to displays PS status.  Offers quick overview of full system status which can be expanded to show a more detailed view.
• Power Supply Quench Reset - used by PS group for reset of QPA assemblies after faults
• PMViewer - Post mortem data viewer.  Used to display data that is captured by control system after PS faults.  The system can also capture PS ramp data on request.  PS references and measurements can be examined. This system is generally used by the PS group.
• Snapshot Info - examine setup of the Snapshot/PM system
• AlarmDisplay - a version of the AlarmDisplay with display filters set up for PS testing
• Sequencer - Blue and Yellow versions available.  This drives the whole ramping process.  Instructions in the use of the sequencer are included in the following sections.

Servers

• wfgManager - Blue & Yellow versions available.  Must be running to support ramping of any kind ( even here2inj or here2park operations ).  If a wfgManager needs to be restarted, proper stopping and initialization steps must be followed.  An alarm will be displayed on the RHIC Alarm Display if one of the wfgManagers stops running.
• PSServer - reports PS status to psall and psmac applications.  Can be stopped and restarted without any special initialization procedure.  It sometimes fails and needs to be restarted (we're working on making it more reliable)
• MagnetMonitor - retrieves PS currents for the psall application.  It sometimes stops getting fresh information and the currents on psall stop updating.  The fix is to stop and restart the MagnetMonitor from StartUp.  No special initialization steps are required.
• EventMonitor - used by the Sequencer to watch for event link events. Can be stopped and started with StartUp.
• snapshotServer - watches for PS faults or other events that can trigger saving of PS data.  Can be stopped and restarted without any special initialization steps.
• RampManager - supports editing of ramp files.  Not needed for the repetitive ramping that is being used for PS testing.  Can be stopped and restarted without any special initialization steps.
• KnobManager - manage assignment of RTDL frames to logical 'knobs'.  Not available in StartUp yet.
• cmLogServer - a message logging system used by some of the other servers.  Not available in StartUp yet.

Starting Ramping (used only during testing)

• Work with the Wfg Manager pet page to bring supplies to injection level

• Go to pet page:
• RHIC / Ring / Magnets / wfgman       for Blue Ring
• RHIC / Ring / Magnets / wfgman2     for Yellow Ring
• Initialize wfg manager as described bellow
• Reset sddsfile
• to 'ramp1' for Blue wfgManager
• to 'ramp4' for Yellow wfgManager
• f any of the previous steps failed, check for problems in the system ( e.g. Is an FEC down? ) and try to correct the problem before proceeding.  Read the Error Recovery section below.
• Click on 'Auxramp->here2park'
• Click on 'Auxramp->here2inj'

• Once power supplies are at injection, work with the Sequencer to start ramping

• Click on 'Start multi MiniRamp sequence'

Stopping Ramping (used only during testing)

Initializing wfg manager

• Init WFGs
• Load saturation
• Connect stop
• Load Limits

Stopping and restarting wfg manager

1. select Disconnect command from Disconnect menu,
2. select Die command from Disconnect menu.

Recovering from Errors

wfgManager Errors Reported

• not properly initializing wfg manger or not loading ramp file,
• trying to execute command when wfgs are ramping,
• problems with fec: Message field usually displays comTools message.

FEC Down

• Stop ramping (see instructions above)
• A special response is required for FECs 4b-ps1, 4b-ps2, and 4b-ps3.  The wfgs in these front ends drive RTDL frames that are used throughout the system.
• Inform PS group.  If 4b-ps3 is being rebooted, inform RF group too.
• Select disconnect from wfgManager pet pages
• 4b-ps1 - Disconnect from blue wfgman page
• 4b-ps2 - Disconnect from yellow wfgman page
• 4b-ps3 - Disconnect from both blue and yellow
• Reboot FEC
• Follow the wfg initialization steps in the Start Ramping section above ( note: It's ok to invoke those steps globally, the wfgManager will only initialize those FECs that require initialization )

wfgManager Down

start the wfgManager from StartUp

Follow the wfg Initialization steps in the section above

PSServer, MagnetMonitor, EventMonitor, RampManager, snapshotServer down

• Restart from StartUp.  No initialization required

Currents Not Updating on psall

• MagnetMonitor program should be stopped and restarted