High Repetitive Photocathode RF Gun

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In summary: Dear UltrafastPED and dear Mentor ZapperZ,Thank you so much for your interests and posts. You are right, of course I should have mentioned what I studied before and what I know to get a proper answer. I know a bir about FEL's and their principles, physics, basics whatever you say. Also I know about thermionic e- sources a little, how they operate, basics etc.The reason of my question was related about my willing to understand and learn about RF guns and especially photocathode rf guns.A path that indicates from the beginning and simplified will be great. Thank you so much for your kind answers again.
  • #1
parazit
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Hi fellows,

I've been looking for "High Repetitive Photocathode RF Guns" for more than a couple of days. It seems, first I need to understand the RF Guns.

I deciced to search such a document that gives the history of RF Guns and explains their historical background with working principle. So I can understand better the deal that I have.

So far I've got just the scientific articles that gives really really short infos about what I'm looking for.

Does any of you, please, help me on this topic?

Will be waiting for your help.
 
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  • #2
Try looking for the history of the free electron laser.

Or try looking for review articles on this topic. It is all too new for there to be any history articles!

PS: What are the specifications for the laser you are interested in? I build laser-driven photo-electron guns.
 
  • #3
parazit said:
Hi fellows,

I've been looking for "High Repetitive Photocathode RF Guns" for more than a couple of days. It seems, first I need to understand the RF Guns.

I deciced to search such a document that gives the history of RF Guns and explains their historical background with working principle. So I can understand better the deal that I have.

So far I've got just the scientific articles that gives really really short infos about what I'm looking for.

Does any of you, please, help me on this topic?

Will be waiting for your help.

Problem here is that you have not revealed what you already know. You need to know a bit about the basic principles of particle accelerators before moving on to photoinjectors. Have you studied out of, say, Wangler's classic text?

Zz.
 
  • #4
Dear UltrafastPED and dear Mentor ZapperZ,

Thank you so much for your interests and posts.

You are right, of course I should have mentioned what I studied before and what I know to get a proper answer.

I know a bir about FEL's and their principles, physics, basics whatever you say. Also I know about thermionic e- sources a little, how they operate, basics etc.

The reason of my question was related about my willing to understand and learn about RF guns and especially photocathode rf guns.

A path that indicates from the beginning and simplified will be great.

Thank you so much for your kind answers again.

 
  • #5
parazit said:
Dear UltrafastPED and dear Mentor ZapperZ,

Thank you so much for your interests and posts.

You are right, of course I should have mentioned what I studied before and what I know to get a proper answer.

I know a bir about FEL's and their principles, physics, basics whatever you say. Also I know about thermionic e- sources a little, how they operate, basics etc.

The reason of my question was related about my willing to understand and learn about RF guns and especially photocathode rf guns.

A path that indicates from the beginning and simplified will be great.

Thank you so much for your kind answers again.

So have you studied the basics of accelerator physics, such as the various waveguides and EM modes that can exist (standing and traveling) in those various geometries? In other words, stuff out of Wangler's text?

Zz.
 
  • #6
I studied about the basics of FEL's. I mean that, I know something about thermionic electron guns and TESLA cavities.

I did not completely read Wangler's book if you say that but I've read some parts from it.

Anyway, thank you for your advise. I'll start to read Wangler's book completely.



ZapperZ said:
So have you studied the basics of accelerator physics, such as the various waveguides and EM modes that can exist (standing and traveling) in those various geometries? In other words, stuff out of Wangler's text?

Zz.
 
  • #7
The reason I asked that is that an rf photoinjector has the same physics as any accelerating structure. The major difference being that this is where the photoelectrons are also created out of the photocathodes at one end of the structure. So one has to start with the understanding of accelerating structures.

Zz.
 

Q: What is a High Repetitive Photocathode RF Gun?

A High Repetitive Photocathode RF Gun is a type of accelerator that uses radio frequency (RF) energy to accelerate charged particles, such as electrons, to high energies. It is commonly used in research and industrial applications.

Q: How does a High Repetitive Photocathode RF Gun work?

The gun consists of a series of electrodes, known as a cavity, that are charged with an alternating electric field. This field causes the electrons to be accelerated through the gun, gaining energy with each pass through the cavity. A photocathode laser is used to produce the initial electrons, which are then guided through the gun by the RF field.

Q: What are the advantages of using a High Repetitive Photocathode RF Gun?

One of the major advantages is its ability to produce a high repetition rate of electron pulses, making it ideal for applications that require a continuous stream of high-energy electrons. It also has a high efficiency, meaning that a large percentage of the input energy is converted into the kinetic energy of the accelerated particles.

Q: What are some common applications of High Repetitive Photocathode RF Guns?

These guns are commonly used in particle accelerators for research purposes, such as in high-energy physics experiments. They are also used in industrial applications, such as in the production of X-rays for medical imaging and materials testing.

Q: What are some challenges in using High Repetitive Photocathode RF Guns?

One challenge is maintaining the stability of the RF field, which can be affected by external factors such as temperature and humidity. Another challenge is the potential for electron beam instabilities, which can affect the quality of the accelerated beam. Additionally, the high voltages used in these guns require careful safety measures to be in place.

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