A1421
New
Preamplifier and Discriminator for 3He tubes
Features
- Specifically designed for neutron detectors as 3He or BF3 tubes in counting applications
- Total Gain: 28 mV/fC
- Discriminator with adjustable threshold
- Analog and TTL output
- Compact size
- External HV input on SHV connector (feeding the internal decoupling circuits)
- Detector inputs on SHV or HN connectors
- Input bias voltage: ± 3 kV Max
- Test input on LEMO (1 pF charge injection capacitors)
- Full counting acquisition system in combination with R7771 Neutron Pulse Train Recorder or R7780 Shift Register
Overview
The A1421 is a charge sensitive preamplifier, shaper and discriminator providing both analog and TTL output designed to be used with neutron detector tubes in counting application together with monitor counters (like the R7771 and R7780). Thanks to its compact size it can be mounted very close to the detector and, due to the fast recovery time, it is suitable for passive as well as for active interrogation measurements. It is equipped with detector inputs on SHV or HV connectors, and external HV inputs on SHV connectors (feeding the internal decoupling circuits). Two LV IN/OUT connectors are available to power the preamplifier also in daisy chain mode. It features two trimmers to adjust the discriminator threshold and output width. A digital input is available on a LEMO connector for the daisy chain of the discriminator signals.
Developed in collaboration with Institut Laue-Langevin in Grenoble.
Ordering Options
| Code | Description |
|---|---|
| WA1421XAAAAA | Preamplifier and discriminator for He3 Tubes for low rate passive measurements RoHS |
| WA1421BXAAAA | Preamplifier and discriminator for He3 Tubes for high rate active measurements RoHS |
| WA1421BHXAAA | A1421BH - Preamp. and discriminator for He3 Tubes for active measurements (HN Det. In Conn.) RoHS |
| WA1421AHXAAA | A1421AH - Preamp. and discriminator for He3 Tubes for passive measurements (HN Det. In Conn.) RoHS |
| WA1421ASXAAA | A1421AS - Preamp. and discriminator for He3 Tubes for passive measurements (SHV Det. In Conn.) RoHS |
| WA1421BSXAAA | A1421BS - Preamp. and discriminator for He3 Tubes for active measurements (SHV Det. In Conn.) RoHS |
