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
Parameter
Description
Spectral Response
Wavelength of Maximum Response
185 to 650
nm
375
nm
Low noise bialkali
16(H) 18(W)
Figure 1: Electron Trajectories
Unit
mm
Photocathode
MateriaI
Minimum Effective Area
LIGHT
Dynode
Structure
Number of Stages
PHOTOCATHODE
PHOTOELECTRONS
UV glass
Window Material
GLASS
BULB
Circular-cage
9
Direct Interelectrode Capacitances
Anode to Last Dynode
Anode to All Other Electrodes
1.2
3.4
pF
pF
FOCUSING
ELECTRODES
2nd DYNODE
11-pin base
JEDEC No. B11-88
Base
SuitabIe Socket
E678–11A (option)
Applicable Socket Assembly
1st DYNODE
3rd DYNODE
E717–21 (option)
TPMSC0003EB
Figure 2: Typical Spatial Uniformity
SPOTSIZE : 1mm DIA
X
SUPPLY VOLTAGE : 1000V
WAVELENGTH : 400nm
RELATIVE SENSITIVITY (%)
Y
100
100
80
80
60
60
40
40
20
20
0
0
8
4
0
4
DISTANCE FROM CENTER OF
PHOTOCATHODE (mm)
8
9
4.5
0
4.5
DISTANCE FROM CENTER OF
PHOTOCATHODE (mm)
RELATIVE SENSITIVITY (%)
Y-Axis
X-Axis
9
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.
