PURPOSE
The streak tube is an inverter image intensifier with electrostatic focusing capable of resolving high-speed events within visible and near IR spectral range.
The tube is equipped with semitransparent multialkali or silver-oxygen-cesium photocathode. It is also provided with the fibro-optic input and output windows.
The streak tube is used to investigate the variation of a single-shot or low-repetition-rate signal within picosecond, nanosecond and microsecond temporal range. It should be operated within stationary or mobile systems.
CONSTRUCTION AND OPERATING PRINCIPLE
The main components of the streak tube are:
- a semitransparent photocathode
- the electron optics (cathode electrode and anode)
- a pair of deflection plates
- a phosphor screen
These components are assembled within the single metal/glass envelope. The photocathode is evaporated onto spherical surface of the fibro-optic input window. The output window is a fibro-optic substrate for the phosphor screen. The deflection plates are furnished with pin-connectors.
An image of the X-ray phenomenon to be analyzed is focused onto the photocathode, which in response to the incident photons emits the photoelectrons. Located very close to the photocathode, accelerating electrode produces an extremely high electric field, required for short temporal resolution. This field reduces the spread of photoelectron transit-times. The electron optics focus the emitted photoelectrons on the screen. The deflection plates sweep photoelectron image over the screen, creating a linear time base perpendicular to the spatial axis. The phosphor screen converts the photoelectron pattern into a visible image to be coupled to a read-out device.
PERFORMANCE
Spectral response range:
- multialkali photocathode
- silver-oxygen-cesium photocathode |
typ
typ |
400-800
400-1300 |
nm
nm |
Photocathode radiant sensitivity:
- multialkali ( λ = 460 nm )
- silver-oxygen-cesium ( λ = 1060 nm ) |
min
min
|
30
300 |
mA/W
µm/W |
| Useful photocathode diameter |
- |
25 |
mm |
| Focusing type |
- |
electrostatic |
- |
| Phosphor color |
- |
green |
- |
Dimensions:
overall length
tube diameter |
-
- |
79
48 |
mm
mm |
| Weight |
max |
0.45 |
kg |
General data
Performance at typical operating voltages
Useful output area (mode1):
- spatial direction
- temporal direction |
typ
min |
15
20 |
mm
mm |
Useful output area (mode2):
- spatial direction
- temporal direction |
typ
min |
18
17 |
mm
mm |
| Magnification |
typ |
1.0 |
- |
| Spatial resolution |
min |
25 |
l.p./mm |
| Temporal resolution |
typ |
50 |
ps |
| Deflection sensitivity |
typ |
50 |
V/mm |
Typical operating voltages Absolute maximum ratings
| Photocathode |
-2.2 |
kV |
| Anode |
0 |
V |
| Screen |
5.0 |
kV | |
| Photocathode radiant |
2x10 -10 |
J/cm 2 |
| Photocathode voltage |
-5.0 |
kV |
| Deflecting line to anode |
± 1.5 |
kV | |
Operating conditions Delivery set
| Temperature |
- |
283 ÷308 |
K |
| Humidity |
max |
65 |
% |
| Pressure |
- |
86 ÷106 |
kPa | |
| Streak tube PV-200 |
| Certificate |
| Blank flange |
| Package case | |
PRE-OPERATION
Unpack the streak tube. Be sure that the tube has no mechanical damage (cracks or free species within the bulb).
Wipe it with nap-free fabrics damped with water-free alcohol.
Put the streak tube into the protective socle. Place the entrance slit aperture in front of the input window. Set up the slit parallel with the pin-leads of the deflecting plates. Connect the power supplies to electrodes.
STORAGE
The tube must be package case. There must be no aggressive impurities in the air.
A long storage conditions
- temperature, K: 283 – 308
- humidity, %: ≤ 80 (298 K)
TRANSPORTATION
The tube should be transported in a package, which is stiffly fixed according to all caution signs.
The tube can be transported with no limitations on the transportation mode and distance.
WARRANTY
The quality streak tube is guaranteed under condition of proper usage, storage and transportation of the tube for as long as one year since delivery date.
