slide1
Download
Skip this Video
Download Presentation
Outline

Loading in 2 Seconds...

play fullscreen
1 / 31

Outline - PowerPoint PPT Presentation


  • 106 Views
  • Uploaded on

Outline. Framework (motivation) Electromagnetic model ( Radiated fields ) Results in the LHC beampipe Next steps. FRAMEWORK. Work developed under the Swiss National Science Foundation (SNSF) project. SNF (contract no. 200021_129661). LEMA:

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Outline' - netis


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide2

Outline

  • Framework (motivation)
  • Electromagneticmodel (Radiatedfields)
  • Results in the LHC beampipe
  • Nextsteps
slide3

FRAMEWORK

Workdevelopedunder the Swiss National Science Foundation (SNSF) project

SNF (contract no. 200021_129661)

LEMA:

(Laboratoire d’Electromagnétisme et d’Acoustique)

CERN:

(Organisation européenne pour la Recherche Nucléaire)

Juan R. Mosig

Michael Mattes

Edén Sorolla

Frank Zimmermann

slide4

FRAMEWORK

LEMA has a solid expertise in numericalelectromagnetics and integralequation

  • High power phenomena
  • Scattering parameters
slide5

FRAMEWORK (motivation)

MAIN IDEA

ELECTRON RADIATION

(POWER SPECTRUM)

DIAGNOSE

Hi there!

I’m an ELECTRON and I’mgoing to annoyyou!

slide7

ELECTROMAGNETIC MODEL

General expressions of em. fields over the waveguide cross-section

(Propagation factor)

Dependency on (x,y)

Electric and magneticfields of the n-th mode

slide8

ELECTROMAGNETIC MODEL

Rectangular cavity

MODES ARE ANALYTICAL

slide9

ELECTROMAGNETIC MODEL

Beam pipe

MODES ARE NON-ANALYTICAL!!!

But wecan use the trigonometricfunctions (modes of rectangularwaveguide) as the basis set to develop the solutions for the beam pipe.

BI-RME method

(BoundaryIntegral-Resonant Mode Expansion)

slide10

POWER SPECTRUM

Transversal

component

Time-average

(harmonicsignals)

Losslesswaveguides

Radiated power

slide11

RESULTS

Beam pipe

slide14

RESULTS

“Eight” pipe

slide19

RESULTS

Bone pipe

slide24

RESULTS

RECTANGULAR CAVITY

TE10

slide25

RESULTS

POSITION

5 ns

SPEED

5 ns

T.D.

slide26

RESULTS

RADIATED FIELD

200 MHz  5 ns

slide27

NEXT STEPS

* Combine BI-RME method to calculate the modes of the waveguides in LHC with e-Cloud.

In the worst case BI-RME calculates in a second the fields for the LHC beam pipe in 10000 positions per electron; furtherimprovementscanstillbedone.

* Implement the calculation of the radiated power spectrum of the electronsaccelerated by the proton beam (alternatively an external RF field) using the ‘history’ of the electrons’ motion provided by e-Cloud.

ad