The Mod. C1205 is a 16-Channel Charge Integrating ADC single width CAMAC module provided with 16 independent input channels.
The C1205 combines a triple range (the total dynamic range is greater than 17 bits, in three overlapping 12 bit ranges) gated integrator charge to voltage converter, 3 Wilkinson type analog to time converters and a sub nanosecond time digitizer. The result is a high performance, wide dynamic range QDC with low dead time (5.5 ยตs).
A clear input and a busy output are also provided. The GATE, clear and busy signals are all NIM levels, with 50 Ohm Lemo style connectors. The 16 inputs are also 50 Ohm Lemo style connectors. The sensitivity at the input connector ranges from 25 fC per count on the low (most sensitive) range, to 1.5 pC per count on the high range. Full scale (on the high range) is greater than 6 nC.
This C1205 has been designed for short conversion time and maximum data throughput, as required in state-of-the-art physics experiments. The built-in data processing can include sliding scale, pedestal subtraction and threshold suppression to reduce data volume and readout time. The module contains a multiple event buffer that can store up to 51 events. Using FASTCAMAC, this buffer can be read out at up to 30 MByte/s.
Three simultaneous ranges: 80 pC, 670 pC and 6 nC
12 bit resolution
Total dynamic range larger than 17-bit
Integral non linearity: ยฑ20 counts on low range, ยฑ5 counts on high & mid range
Noise smaller than ยฑ3 counts on low range, smaller than ยฑ1.5 counts on high & mid range
Conversion time: 6.5 ยตs
Gate width from 10 to 500 ns