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XBOX 2 Interlocks. Joseph Tagg. XBOX2 Interlocks. Ion Pump Controllers. Ion Pump Controllers. Ion Pump Controllers. Modulator. Water. RF Valves. Vac 10e-5. HV Enable. serial. logic. PXI. Interlock FPGA. Serial. Vac 10e-7. XBOX 2 Interlocks. Many independent interlock sources

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Presentation Transcript
xbox2 interlocks
XBOX2 Interlocks

Ion Pump

Controllers

Ion Pump

Controllers

Ion Pump

Controllers

Modulator

Water

RF

Valves

Vac 10e-5

HV Enable

serial

logic

PXI

Interlock

FPGA

Serial

Vac 10e-7

xbox 2 interlocks1
XBOX 2 Interlocks
  • Many independent interlock sources
  • Each can be defined in one of two ways
    • Normal: stops RF
    • Critical: stops RF and sends interlock to modulator
  • Possibility to add more if needed
  • Normal interlock status propagated through backplane and externally. Critical interlock status propagated externally
interlock properties
Interlock properties
  • Once set, needs an explicit signal to reset
  • Interlock FPGA logic runs as soon as powered and runs regardless of software state
  • Starts in interlock status and uses a watchdog to interlock if no communication from software within a second
  • Software configurable
structure
Structure

reset

Interlock

Interlock source

Interlock latched

Critical Interlock

Status

Interlock

Interlock source

Interlock latched

Global Interlock

Status

OR

Interlock

Interlock source

Interlock latched

to do
To do
  • Redundancy
  • Fail-safe mechanisms
interlock sources and severity
Interlock sources and severity
  • Breakdown: normal
  • Vacuum <1e-5: critical
  • Watchdog elapses (software problem): critical
  • Software: normal
  • Water: critical
  • RF valves: critical
  • Modulator: critical
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