Description

⚛️ Theremino PMT V3.3: Ultra-Stable High Voltage Power Supply for PMTs

The Theremino PMT V3.3 is a specialized power adapter engineered to provide an ultra-stable high-voltage (HV) supply for Photomultiplier Tubes (PMTs). It is an essential component for applications requiring high precision, such as Gamma Spectrometry and advanced scientific measurements where voltage stability is critical.

This module is designed to reliably power PMTs across a wide range of operating conditions, ensuring minimal noise and voltage drift for accurate isotope peak analysis.

Key Technical Specifications

The PMT V3.3 allows configuration for two main output voltage ranges:

Application and Stability Notes

• Precision Laboratory Use: The PMT V3.3 is specifically designed for a stable laboratory environment. In conditions with sudden temperature changes or extreme climates (e.g., from −30∘C to +60∘C), frequent recalibration via the MCA software may be necessary.

• High-Current Capability: The module can deliver up to $250\mu \text{A}$ at 500V (with low resistance settings), supporting PMTs with total resistance as low as $2\text{ M}\Omega$.

• Optimal Noise Performance: Noise measurements are taken under “normal” conditions (e.g., $120\text{ M}\Omega$ PMT at $800\text{ V}$ with $1\text{ M}\Omega$ dividing resistors), including ripple and audio card noise, ensuring a final clean signal.

System Requirements

The PMT V3.3 is an adapter and must be integrated with the full Theremino hardware and software suite for data analysis:

1. Theremino Master Module: Required for basic system interface and power supply.

2. Audio Card/DAA: Used for signal acquisition and high-resolution measurement of the PMT output.

3. Theremino MCA Software: Essential for energy calibration, spectrum visualization, and isotope identification.

Essential Resources and Documentation

For setup, calibration, and optimal use of the PMT V3.3 in spectrometry applications, refer to the official guides.