PHOTOMULTlPLlER TUBES
R2693, R2693P
Transmission Mode Low Noise Bialkali Photocathode
28mm (1-1/8 inch) Diameter, Side-on Type
FEATURES
Low Dark Current
Low Dark Counts (R2693P)
Wide Photocathode
Excellent Spatial Uniformity
Fast Time Response
APPLICATIONS
Fluorescence Detector
Chemiluminescence Detector
Raman Spectroscopy
Emission Spectroscopy
Light Scattering Detector
GENERAL
Figure 1: Electron Trajectories
Parameter
Description
185 to 650
375
Unit
nm
Spectral Response
Wavelength of Maximum Response
nm
LIGHT
Photocathode
MateriaI
Low noise bialkali
16(H) 18(W)
Minimum Effective Area
mm
PHOTOCATHODE
PHOTOELECTRONS
Window Material
UV glass
Dynode
GLASS
BULB
Circular-cage
9
Structure
Number of Stages
Direct Interelectrode Capacitances
Anode to Last Dynode
1.2
3.4
pF
pF
FOCUSING
ELECTRODES
Anode to All Other Electrodes
2nd DYNODE
11-pin base
JEDEC No. B11-88
1st DYNODE
3rd DYNODE
Base
E678–11A (option)
E717–21 (option)
SuitabIe Socket
TPMSC0003EB
Applicable Socket Assembly
Figure 2: Typical Spatial Uniformity
X-Axis
Y-Axis
100
100
Y
80
80
60
40
SPOTSIZE : 1mm DIA
60
SUPPLY VOLTAGE : 1000V
X
WAVELENGTH : 400nm
40
20
0
20
0
4.5
4.5
8
4
0
4
8
9
0
9
DISTANCE FROM CENTER OF
PHOTOCATHODE (mm)
DISTANCE FROM CENTER OF
PHOTOCATHODE (mm)
TPMSB0066EA
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office.
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are
subject to change without notice. No patent rights are granted to any of the circuits described herein. © 1993 Hamamatsu Photonics K.K.