Diagnostic device for particle accelerator, diagnostic method for particle accelerator, and diagnostic program for particle accelerator

A diagnostic method for a particle accelerator, the particle accelerator comprising a circular accelerator connected to a beam transport system via an emission device, the method comprising steps of:

• receiving a first detection signal from a first detector attached to the circular accelerator to detect a first current value generated by movement of first charged particles circulating in the circular accelerator, the first detection signal being outputted as a signal corresponding to the first current value;
• receiving a second detection signal from a second detector attached to the circular accelerator to detect a second current value generated by movement of second charged particles, which are extracted from the first charged particles circulating in the circular accelerator to propagate into the beam transport system, the second detection signal being outputted as a signal corresponding to the second current value;
• acquiring a first processing signal by performing processing comprising a differentiation on the first detection signal;
• and
• calculating an extraction efficiency of the second charged particles from the first charged particles based on a ratio between the first processing signal and the second detection signal.

A non-transitory computer-readable storage medium with an executable diagnostic program stored thereon, with respect to a particle accelerator comprising a circular accelerator connected to a beam transport system via an emission device, wherein the diagnostic program instructs a processor to execute the steps of:

• receiving a first detection signal from a first detector attached to the circular accelerator to detect a first current value generated by movement of first charged particles circulating in the circular accelerator, the first detection signal being outputted as a signal corresponding to the first current value;
• receiving a second detection signal from a second detector attached to the beam transport system to detect a second current value generated by movement of second charged particles, which are extracted from the first charged particles circulating in the circular accelerator to propagate into the beam transport system, the second detection signal being outputted as a signal corresponding to the second current value;
• acquiring a first processing signal by performing processing comprising a differentiation on the first detection signal;
• and
• calculating an extraction efficiency of the second charged particles from the first charged particles based on a ratio between the first processing signal and the second detection signal.