Photomultiplier Tube (PMT) Bases

digiBASE 14-PIN Photomultiplier Tube Base (PMT Base) with Integrated Bias Supply, Preamplifier, and Multichannel Analyzer (MCA) and Digital Signal Processing (DSP) for NaI Radiation DetectorScintillation detectors produce light as they absorb energy, and these light flashes result in the release of a proportionate number of photoelectrons at the cathode of a photomultiplier tube (PMT). Each of the ORTEC Photomultiplier Tube Bases is designed to accommodate a particular type of PMT to distribute the operating voltages to all its elements, and to derive signals from it.

Classically, high voltage has been supplied to the PMT base from an external supply. More recently the supply was integrated into the base itself and now even the multichannel analyzer is integrated within the PMT base. Models of all of these types are available from ORTEC.

HV
 Distribution 

 Charge Sensing 
Distribution

High Voltage
 Power Supply 

Timing &
 Energy Output 

DSP with
 MAESTRO Software 

Models for 10 stage, 14 pin NaI PMTs
266

YES

NO

NO

YES

NO

276

YES

YES

NO

YES

NO

296

YES

YES

YES

YES

NO

DigiBASE(1)

YES

YES

YES

NO

YES

DigiBASE-E(2) 

YES

YES

YES

NO

YES

Models for high gain 12 or 14 stage PMTs with 20 or 21 pin sockets
265A

YES

NO

NO

YES

NO

269

YES

NO

NO

YES

NO


(1) USB Interface and power over USB
(2) Ethernet Interface and Power Over Ethernet (POE)
For detailed specifications see the specific data sheets

In order to assist you further, you may download a selection guide, packed with tabulated comparative specifications.

PMT Base Models