PMT Socket High-Voltage Power Supply Module
The HPMA series is a high-performance power supply module with an integrated socket designed for 1-1/8 inch (28 mm) diameter side-on photomultiplier tubes (PMTs). Compatible with industry-standard tubes such as the Hamamatsu R928, the module combines a regulated high-voltage power supply and a voltage divider (bleeder) circuit into a single compact unit.
This all-in-one design delivers low noise and high linearity, ensuring stable PMT performance while simplifying system integration by eliminating the need for external high-voltage wiring.
FEATURES
- Designed for Standard PMTs: Optimized for 1-1/8 inch (28 mm) side-on photomultiplier tubes.
- Integrated Design: Built-in high-voltage power supply and voltage divider network.
- High Performance: Engineered for high linearity and low ripple noise.
- Easy Integration: Features an output voltage monitor and a flange for secure chassis mounting.
APPLICATIONS
Models
| Model | Output Voltage | Ripple | Size [inch(mm)] | PMT type |
|---|---|---|---|---|
| HPMA-1NS-L2B | 0 to -1 kVdc | < 1 mVp-p | Φ: 1.26(32) × L:1.5(38) | HAMAMATSU PHOTONICS K.K R928 |
| HPMA-1N-L2B | Φ: 1.18(30) × L: 2.4(61) |
Specifications
- Input voltage
- + 15 Vdc
- Output voltage control
- [HPMA-1NS-L2B] External control voltage (Vcon-in) 0 to + 1 Vdc
[HPMA-1N-L2B] External control voltage (Vcon-in) 0 to + 5 Vdc
Diagram
Internal Connection
Dimensions
HPMA-1NS-L2B: Φ32 x L38mm (Φ1.26" x 1.50")
HPMA-1N-L2B: Φ30 x L61mm (Φ1.18" x 2.40")
For details, download the datasheet below.
Download
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-
Photomultiplier Tube Socket Supplies - Selection Guide
Date: 2025-11-11 Rev 04
PDF (3,359 KB)

-
Safety and Usage of High voltage Power supply
Date: 2025-09-08 rev 04
PDF (602 KB)
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-
Photomultiplier Tube Socket Supplies - Selection Guide
Date: 2025-11-11 Rev 04
PDF (3,359 KB)

-
Safety and Usage of High voltage Power supply
Date: 2025-09-08 rev 04
PDF (602 KB)
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