1 / 7

Development of Flat Beam Production Techniques for Linear Colliders (1998-2000)

This paper discusses breakthroughs in the production of flat electron beams for linear colliders achieved between 1998 and 2000. Initially proposed by Y. Derbenev, a linear optics device transformed beams with high horizontal-to-vertical emittance ratios into vortex motion configurations. Subsequent innovations, such as the A0 collaboration's successful generation of flat beams from a photo-injector, highlighted significant advancements in beam physics. The paper details experimental results showing remarkable emittance ratios and outlines techniques that lead to improved beam quality crucial for next-gen linear colliders.

sonnagh
Télécharger la présentation

Development of Flat Beam Production Techniques for Linear Colliders (1998-2000)

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. e+e- Linear Colliders X-Ray SASE FEL

  2. Flat Beam Production In 1998 Y. Derbenev invented a linear optics device for transforming a beam with high ratio of horizontal to vertical emittance (flat beam) to one with a vortex motion (rigid rotor). After injecting such a beam into a matched solenoid this vortex motion can be canceled to create a magnetized beam with equal emittances in the transverse degrees of freedom (round beam) (UM-HE-98-04). In 1999 R. Brinkmann, K. Flottmann and Y. Derbenev proposed to reverse the process: obtain a flat beam from a round beam produced from a cathode in a magnetic field: A Flat Beam Source for Linear Colliders (TESLA-99-09) In 2000 H. Edwards and the A0 collaboration have seen the first flat beam from a photo-injector.

  3. Vortex Motion

  4. Clockwise rotation Identity matrix in x 90o phase advance in y D1 D2 Q3 Q1 Q2 By choosing b=1/k, particles end up with equal displacement and angles in x and y This is a flat beam 45o inclined. D. Edwards

  5. Flat Electron Beam Production from A0 Photo-injector Round beam image on fluorescent screen Flat beam image on fluorescent screen Flat beam measurements Fermilab/NICADD Photoinjector Laboratory (FNPL): Demonstrated large emittance ratio (50:1) with small emittance 0.9 mm-mrad @ 1 nC Beam image through slits for emittance measurement

More Related