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artis
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Notice: I was told to make my own thread about the subject so here it is., please move it to a better subforum if there is a better place for it.At first I would like to ask three questions.
1) A torus shaped resonant cavity, like the ones found in particle accelerators and klystrons, is it a high frequency LC circuit, the parallel plate structure with the hole in the middle for beam passing is acting like the capacitor while the torus shaped outer part is a very small one loop inductor?
Is it then true that both in a klystron and also in a particle accelerator the cavity interacts with the beam of charged particles by the E field which is between the cavities plate like structure and the toroidal shape B field in the cavity torus is just a side effect of the charge running back and forth between the cavity plates connected by the torus bell or however it is called.?
2) Is my understanding of the klystron correct, both the input and output cavities work the same way only the input cavity is supplied by a RF signal of low amplitude (weak) which then creates a low strength RF oscillation in the input cavity, the electron gun emitted electrons pass by the cavities center hole where they are disturbed by the RF E field that forms between the cavities center plates and so in one half period of the signal passing electrons get accelerated while in the other half period electrons get de-accelerated or pushed back against, further down the "drift tube" this creates regions along the beam path of higher and lower electron concentrations with corresponding higher and lower E field along the beam path, as these regions pass the second or multiple second cavities they induce a RF E field between the cavity plates which then oscillates the cavity. The extra gained energy (wave amplitude) is due to the electron beam gaining energy as it gets accelerated towards the anode.
3) It seems that at RF and microwave frequencies the wavelength is small enough so that along a waveguide the EM wave can reach multiple positive and negative peaks which induce opposing E and B field lines along the wavepath inside the waveguide, is it possible to have a RF or microwave solenoid or something remotely similar where for example the B field lines all point in the same direction through a surface of some given area like it normally is with a low frequency or DC electromagnet?
I read about transverse electric and magnetic modes where one field is transverse to the wave propagation direction while the other is parallel to the direction of propagation,is it possible to have a situation where one of the fields either E or B is parallel to the path of the waveguide and at peak points would resemble the field lines coming out of a solenoid magnet?Thank you very much.
1) A torus shaped resonant cavity, like the ones found in particle accelerators and klystrons, is it a high frequency LC circuit, the parallel plate structure with the hole in the middle for beam passing is acting like the capacitor while the torus shaped outer part is a very small one loop inductor?
Is it then true that both in a klystron and also in a particle accelerator the cavity interacts with the beam of charged particles by the E field which is between the cavities plate like structure and the toroidal shape B field in the cavity torus is just a side effect of the charge running back and forth between the cavity plates connected by the torus bell or however it is called.?
2) Is my understanding of the klystron correct, both the input and output cavities work the same way only the input cavity is supplied by a RF signal of low amplitude (weak) which then creates a low strength RF oscillation in the input cavity, the electron gun emitted electrons pass by the cavities center hole where they are disturbed by the RF E field that forms between the cavities center plates and so in one half period of the signal passing electrons get accelerated while in the other half period electrons get de-accelerated or pushed back against, further down the "drift tube" this creates regions along the beam path of higher and lower electron concentrations with corresponding higher and lower E field along the beam path, as these regions pass the second or multiple second cavities they induce a RF E field between the cavity plates which then oscillates the cavity. The extra gained energy (wave amplitude) is due to the electron beam gaining energy as it gets accelerated towards the anode.
3) It seems that at RF and microwave frequencies the wavelength is small enough so that along a waveguide the EM wave can reach multiple positive and negative peaks which induce opposing E and B field lines along the wavepath inside the waveguide, is it possible to have a RF or microwave solenoid or something remotely similar where for example the B field lines all point in the same direction through a surface of some given area like it normally is with a low frequency or DC electromagnet?
I read about transverse electric and magnetic modes where one field is transverse to the wave propagation direction while the other is parallel to the direction of propagation,is it possible to have a situation where one of the fields either E or B is parallel to the path of the waveguide and at peak points would resemble the field lines coming out of a solenoid magnet?Thank you very much.