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CLS LINAC Operator Interface

CLS LINAC Operator Interface. By Hao Zhang. Topics. Background Requirements Design and Implementation Injection Status Screen Machine Protection Screen LINAC Master Display Benefits and Future Demo Questions. Background.

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CLS LINAC Operator Interface

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  1. CLS LINAC Operator Interface By Hao Zhang

  2. Topics • Background • Requirements • Design and Implementation • Injection Status Screen • Machine Protection Screen • LINAC Master Display • Benefits and Future • Demo • Questions

  3. Background • The operation of LINAC is a complicated process. The numbers of PVs and EDM screens involved can be overwhelming • Eg, for successful injection, thousands of PVs are involved and those PVs are contained in a couple of different EDM screens

  4. Requirements • give the operator a snapshot of the status at one glance • pin point each individual PV when necessary • A quick and easy way to navigate through different EDM screens

  5. Design and Implementation • Injection Status Screen • Machine Protection Screen • LINAC Master Display

  6. Design – Injection Status Screen The Injection Status Screen

  7. Design – Injection Status Screen Status indicator matrix: How PVs are organized • Row : sub-systems • Column: key components

  8. Design – Injection Status Screen Indicator color definition: How status is represented

  9. Design – Injection Status Screen Sub-screens: Display components info in a sub-system • Clicking on indicator brings up a sub-screen

  10. Design – Injection Status Screen Related displays: links to other EDM screens

  11. Implementation – Injection Status Screen • A group status PV is created to indicate the collective status of a group of components in a sub-system. Eg. PVLTB1:IOP:status gives the collective status for all the ion pumps in the LTB • The group status PV monitors all individual PVs in this group and calculate the group status. Different algorithms are used for different types of PVs. Eg. The most common algorithm finds out the highest alarm level in all the individual PVs and pass it to the group PV.

  12. Implementation – Injection Status Screen Example: pass highest alarm to the group PV

  13. Design – LINAC Machine Protection Screen Overview of LINAC machine protection system Compoments: • a PLC system • a hardware interlock system Tasks: • monitors ion pumps, CCGs, flow switches, thermo couples, and other devices in the Gun, RF, and vacuum sections • interfaces with other systems such as the ACIS system, modulator controls, and the LTB machine protection system • Shut down vacuum valves, disable Gun and RF to protect them when necessary

  14. Design – LINAC Machine Protection Screen The LINAC Machine Protection Screen: • displays the status of those devices • helps diagnose problem when the machine protection system trips beam

  15. Design – LINAC Machine Protection Screen

  16. Implementation – LINAC Machine Protection Screen EPICS PVs are created based on the PLC variables. Modbus Ethernet driver is used for the mapping from Modicon Momentum PLC variables to EPICS PVs.

  17. Design – LINAC Master Display

  18. Benefits • Simple , self-explanatory, and user friendly • Better organization of PVs and control screens • A handy tool to help identify problems • Shortened the average time taken to return the storage ring to service after a trip

  19. Future • More indicators are to be added into the grid status indicator matrix as new devices are installed into the system • More screens are to be integrated into the master display as the system evolves • Considering extend the indicator color key definition so that more status can be identified. The newly addition of the bypass indicator is the first step.

  20. Demo • Injection Status Screen • LINAC Machine Protection Screen • LINAC Master Display

  21. Questions ?

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