Russian Vacuum Electronics (reference materals).
Ed. M.I. Petelin
A.Arkhipov, D.Kasyanenko, O.Louksha, M.Mishin, G.Sominski
St. Petersburg Polytechnic University.
sominski@rphf.spbstu.ru
Spatial, energy and oscillatory characteristics of intense electron flows magnetically confined or (in magnetron-type devices) transported with crossed fields can be measured by means of the following experimental techniques:
Diagnostic techniques or instrument |
Measured characteristics,
areas of application |
Basic parameters
|
Spatial resolut.,mm |
Time resolut., ns |
Other
|
Method of ion current |
Field and space charge distributions in magnetron devices (MD) |
10-2 |
102 -103 |
|
Method of movable collector |
Electron incidence angles and velocities at the cathode (MD) |
10-1 |
|
Energies 100-3000 eV,
angles in ~90 0 band |
X-ray diagnostics |
Transverse structure of intense electron beams (IEBs) |
1 |
10 |
Electron energies  100-200 keV |
Thermo-vision method |
Transverse structure of IEBs |
2-3 |
103 |
Electron energies 100-200 keV |
Analyzer of electron velocities |
Axial ( v||) and transverse (  ) electron velocities in IEBs |
1 |
~104 ( v||), pulse series ( ) |
Electron energies up to 70 keV
|
High-resolution energy analyzer |
Electron energy distributions in collector area of gyrotron devices |
1 |
~104 |
Energy resolution 1% |
Analyzer of space charge oscillations |
Instant spectra, phase characteristics of oscillations in MD or IEB |
3-5 |
2 õ 10-3 |
Frequency band 10 – 8000 MHz |
 |
 |
High-resolution electron beam analyzers attached to collector parts of gyrotrons are based on a combination of electric and magnetic cut-off methods (left photo) and on using a precise mechanical adjustment system. (right photo) .
|
