|
 |
-
Real-time
mm-wave spectrum measurements
-
32
frequency channels simultaneously operating
-
Covering
of 113-153 GHz frequency band
-
High
sensitive receiving of mm-wave power
|
Description
The multichannel 113-153 GHz Radiometer was designed for plasma
electron temperature measurements in FTU tokamak (Frascati,
Italy). The fact is taken as a basis of the device that the
intensity of the ECE 2nd harmonic is proportional to the electron
plasma temperature in situations when the plasma can be considered
as the black body for its own cyclotron radiation. The Radiometer
is a superheterodyne receiver that picks up the plasma EC
emission and produces 0-+10V analogue output signal proportional
to the plasma emission power. The measurements are performed
simultaneously in 32 frequency channels (i.e. radial points
in the plasma) covering 113-153 GHz band that corresponds
to magnetic field range from 2 to 2.7 T. Output signals are
delivered in a form available to be stored in tokamak data
acquisition system.
Specifications
|
..
Input frequency band, GHz
|
113
to 153
|
| ..
Output Video amplifier frequency band, MHz |
0.01Hz
to 1
|
|
..
Number of output frequency channels
|
32
|
|
..
Detection limit of individual channels, W
|
(0.4-4)x10-10
|
| ..Bandpass
widths in individual channels, GHz |
0.9-1.2
|
| ..Maximum
output voltage , V |
10 |
|
..Input
waveguide
|
WR6
|
|
..Input
waveguide flange
|
UG-387/U-M
|
| ..Output
connectors |
BNC |
|
..Power
supply:
|
.
|
| ..Voltage,
V |
220
|
|
..Frequency,
Hz
|
50
|
|
Ambient
conditions:
|
air
temperature, C |
10
to 40
|
| air
humidity (%) |
up
to 95
|
|
