Photomultipliers
Critical Parameters
| Parameter | Description | Typical Value (Fast PTM) |
|---|---|---|
| Rise Time (TR) | The time interval between the arrival of photon at the cathode and the arrival of the amplified pulse at the anode | 0,05 (MCP) to 3 ns |
| Transit Time (TT) | The time interval between the arrival of photon at the cathode and the arrival of the amplified pulse at the anode | MCP:0,5 ns. PMT: 5-30 ns |
| Transit Time Spread (TTS) | Considered as the most important specification for time-resolved measurements; the timing variation due to the different geometric paths that the electrons can take from the cathode to the anode | MCP: 0,025 ns. PMT: 0,2-1,5 ns |
Overview of different PMT's
| Part ID | Type | Driving Voltage | Gain | Spectral Range (nm) | Spectral Peak (nm) | Dark Current (after 30 min) | Rise Time (ns) | Transit Time (TT)(ns) | Transit Time Spread (TTS) (ns) | Pricing |
|---|---|---|---|---|---|---|---|---|---|---|
| R1161 | PMT - Head On | 1000 V | 1,0E+06 | 300 to 650 | 420 | 1-6 nA | 2,5 | 27 | 2,8 | x |
| R5505 | PMT - Head On | 1750 V | 1,0E+06 | 300 to 1400 | 900 | 10 nA | 3 | 23 | 1,5 | x |
| R3478 | PMT - Head On | 1700 V | 1,7E+06 | 300 to 650 | 420 | 6 nA | 1,3 | 14 | 0,36 | x |
| 7400U-02 | PMT - Head On | 800 V | 5,0E+05 | 300 to 850 | 500 | 2 nA | 0,78 | 5,4 | 0,23 | 6404 SEK |
| 7400-02 | PMT - Head On | 800 V | 7,0E+05 | 300 to 850 | 420 | 0,2 nA | 0,75 | 5,4 | 0,28 | 6404 SEK |
| R380952 | MCP - PMT | 3000 V | 2,0E+05 | 160 to 650 | 400 | 2000/s | 0,15 | 0,55 | 0,025 | 126,346 SEK |
| R5916U-52 | MCP - PMT | 3000 V | 2,0E+05 | 160 to 650 | 400 | 0,5 | 0,18 | 1 | 0,09 | 148,643 SEK |