Comparison of different models and their applications in real life

Advantages and disadvantages

According to the method of creating a magnetic field, undulators can be divided into electromagnetic (including superconducting) and permanent magnets. Electromagnetic undulators differ from other types of undulators: the ability to change the field strength by simply changing the current in the windings; high field uniformity (which is especially important for long undulators). The disadvantages of electromagnetic undulators include the following: relatively complex designs; large heat losses; the complexity/impossibility of fine tuning the magnetic field, which is practically necessary for the passage of the electron beam through the undulator.

Ordinary (warm) electromagnetic undulators, widely used in accelerator technology, can no longer satisfy the requirements for the field strength, for at least two reasons. First, saturation effects will noticeably affect the steel core with an increase in the field, since the magnetic field strength at the pole edge is 1.5–2 times higher than the field on the undulator axis. Secondly, the space between adjacent poles decreases with a period and the required current density in the electromagnetic coils reaches values of the order of 2 kA/cm or more, exceeding the permissible limit for warm electromagnets. In superconducting undulators, there is also a critical current density of the order of 2.7 kA/mm2, but this is two orders of magnitude higher than the limit for conventional warm electromagnets. Relative simplicity of design; lack of additional equipment (powerful current sources, cooling systems, etc.); possibility of fine adjustment of magnetic fields also should be mentioned [10]. Rare earth magnets significantly outperform other permanent magnets in a number of characteristics and especially in terms of remanence.

Don't use plagiarized sources. Get Your Custom Essay on
Comparison of different models and their applications in real life
Just from $9/Page
Order Essay
Place your order
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more
error: Content is protected !!
Open chat
Need assignment help? You can contact our live agent via WhatsApp using +1 718 717 2861

Feel free to ask questions, clarifications, or discounts available when placing an order.
  +1 718 717 2861           + 44 161 818 7126           [email protected]
  +1 718 717 2861           + 44 161 818 7126           [email protected]