PPAC

Parallel plate avalanche counter(PPAC) development and performance test for Rare Isotope Science Project(RISP)

文献：

• 1976
  • NIM / A LARGE AREA PARALLEL PLATE AVALANCHE COUNTER
• 1979
  • NIM / A SQUARE METER POSITION SENSITIVE PARALLEL PLATE DETECTOR FOR HEAVY IONS
• 2017
  • Construction and Performance Test of Prototype Parallel Plate Avalanche Counters at RAON

structure

• 10 MΩ (600-800V)
• 220 pF
• Mylar of 2~3.5 µm
• Need pure quenching gas of C4H10(W = 23.7 eV), C3F8(W = 34.4 eV)

Read out avalanche signals from anode and cathode; Anode for time & triggering, cathode for position measuremen

Delay line readout

• 0603 chip inductor 91 nH (2% tolerance)
• 0603 chip capacitor 39 pF (1% tolerance)
• 0603 chip resistor, 500 kΩ