Photomultiplier Tube (PMT) Bases
Signal Processing & High Voltage Distribution for Scintillation Detectors
Please add items to the cart and submit them for a quotation.
Quantity
Key Highlights
- Essential component for scintillation detector systems using PMTs
- Provides high-voltage distribution to PMT dynodes and electrodes
- Converts light signals into electrical pulses for spectroscopy and counting
- Available in multiple configurations:
- Standard voltage divider bases
- Bases with integrated preamplifier
- Bases with built-in high-voltage supply
- Fully integrated digital MCA + DSP systems
- Compatible with NaI(Tl), plastic scintillators, and other PMT-based detectors
- Models support timing, energy measurement, and single-photon counting
- USB and Ethernet-enabled digital bases available (DigiBASE series)
- Compact, low-power designs suitable for portable and field applications
Description
Photomultiplier Tube (PMT) Bases are critical electronic components used in scintillation-based radiation detection systems, responsible for powering and interfacing with photomultiplier tubes.
When radiation interacts with a scintillator (e.g., NaI(Tl)), it produces light pulses. These light signals are converted into electrical signals by the PMT, and the PMT base plays a key role in:
Distributing the required high voltage across PMT dynodes
Extracting and shaping the output signal for further processing
ORTEC offers a comprehensive range of PMT bases designed for different levels of system integration:
Standard Bases (e.g., 265A, 266, 269)
→ Provide voltage division and signal output for timing and spectroscopy
Bases with Preamplifier (e.g., 276, 276L)
→ Include low-noise signal amplification for improved performance
Integrated Systems (e.g., 296 ScintiPack)
→ Combine HV supply + preamplifier + compact design for simplified setup
Digital PMT Bases (e.g., DigiBASE, DigiBASE-E)
→ Fully integrated high voltage + preamp + MCA + DSP + software in one unit
These solutions enable users to build anything from basic counting systems to fully digital gamma spectroscopy systems, depending on application requirements.
Specifications
Product Type: Photomultiplier Tube (PMT) Base
Function:
- High voltage distribution (dynode chain biasing)
- Signal extraction and conditioning
- Optional amplification and digitization
PMT Compatibility:
- 10-stage, 12-stage, and 14-stage PMTs
- 14-pin, 20-pin, and 21-pin socket configurations
Output Types:
- Anode output (timing signal)
- Dynode output (energy signal)
Voltage Supply:
- External HV supply (standard bases)
- Integrated HV (up to ~1200 V for digital bases)
- Integrated Features (model dependent):
- Low-noise preamplifier
- Adjustable focus control
- Digital Signal Processing (DSP)
- Multichannel Analyzer (MCA)
- USB / Ethernet interface
Power Consumption: Low-power designs (~240 mW for integrated models)
Form Factor:
- Compact, lightweight cylindrical base design
- Direct mounting on PMT
Application
- Gamma spectroscopy using scintillation detectors (NaI, LaBr)
- Nuclear and radiation detection systems
- Environmental radiation monitoring
- Homeland security and isotope identification
- Medical imaging and radiation measurement
- Research in nuclear and particle physics
- Portable and field-based radiation detection systems