Building a synchrotron light source

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Discussion Overview

The discussion revolves around the feasibility and design considerations for building a compact synchrotron light source, particularly focusing on the use of superconducting dipole magnets, LINAC injectors, and alternative configurations like electron linacs with undulators. Participants explore various technical aspects, budget constraints, and the practicality of such a project.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant outlines a design for a compact synchrotron light source, questioning the optimal radio frequency for the LINAC injector to accelerate electrons efficiently.
  • Another participant challenges the feasibility of building such a project, suggesting that superconducting dipole magnets may not be necessary and that the LHC design report is not applicable to synchrotron light sources.
  • A different perspective proposes using an electron linac with an undulator to produce X-rays, aiming for electron energies of 20 MeV or more.
  • Concerns are raised about the high costs associated with building a synchrotron light source, with one participant suggesting that a smaller scale light source could still be expensive.
  • Another participant asserts that a betatron is simpler to construct than a synchrotron light source while still producing useful light output.
  • Questions about the background knowledge of participants are posed, particularly regarding the appropriateness of using the LHC as a reference for synchrotron light source design.

Areas of Agreement / Disagreement

Participants express differing views on the feasibility, design, and cost of building a compact synchrotron light source. There is no consensus on the best approach or the practicality of the project.

Contextual Notes

Participants highlight the dependence on various parameters for determining the optimal radio frequency for electron acceleration and the differences in mission and particle types between the LHC and synchrotron light sources. The discussion reflects uncertainty regarding the budgetary requirements for such projects.

Varma21
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Lately, I've wanted to build a compact source of synchrotron radiation that is accessible to researchers with size and budget constraints. So far, I've managed to outline designs of the superconducting dipole magnets that will be used to keep electrons moving in a ring path within the booster ring and storage ring. In the LINAC injector for the initial electron acceleration, what radio frequency would be best to accelerate electrons in a most efficient manner? I am currently using the LHC design report from in order to aid in my research. Any help will be appreciated.
 
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What does "I've wanted to build" mean? It is certainly not a project for your garage.
You don't need superconducting dipole magnets for synchrotron sources - you do not want high field strengths there anyway. And undulators work well with permanent magnets.
Varma21 said:
In the LINAC injector for the initial electron acceleration, what radio frequency would be best to accelerate electrons in a most efficient manner?
Depends on too many other parameters to tell.
Varma21 said:
I am currently using the LHC design report from in order to aid in my research.
The LHC is a proton (and heavy ion) synchrotron. A completely different type of accelerator.
 
Instead of a synchrotron could I have just an electron linac with an undulator at the end to produce to produce x rays? My goal would be to get the electrons to 20 MeV or more before the electrons get undulated. In the case of a linac, the only magnets i would need are quadrupoles to concentrate the beam.
 
That can be a nice project for a research institute - with a budget of many millions, and if you are fine with x-rays so soft that they are more in the near UV.
 
Would a smaller scale light source really cost millions? I really think it would be possible to build a small light source. Michio Kaku built his own betatron as a high schooler.
 
A betatron is much easier than a synchrotron light source (with useful light output).
 
Do you have any background in accelerator physics? The LHC is an unusual starting point, as it's mission - and as mfb points out, even the particles it accelerates - is very different than a synchrotron light source's. And if you want it under a million, you need to shave 4 zeros off the price tag.
 

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