-- MarkWard - 01 Mar 2017


  • Several rebuilds with improvements to grounding and field cage attachment
  • Still no light frown
  • DSC_3975.jpg
  • Lens on the CCD was stopped down to f/5.6, cutting roughly 90% of its area
  • Opened lens wide to f/1.8
  • I now see light!
  • Took a series of 60 images, 2 second exposure and combined them to show how the source glows
  • All are 2x2 binning
  • A540_C100_E2_S60.gif
  • Z axis has been compressed to show the spread of light... This is at very low dift field.
  • A560_C050_E2_S60_z.gif

  • A560_C050_E2_S60.gif:

  • A560_C100_E2_S60.gif:

  • A560_C200_E2_S20.gif:
  • Strange how it seems the glow reduces with increased drift field... early days yet
  • Cross pattern is likely the alighment of the amplification region mesh.

  • Image of the Mesh... Patterns are in same directions as the mesh x and y

  • Finally some light!
  • Need to move the source... probably use a lower intensity source.


  • T111 appears complete, minor cosmetic things such as, cleaning the floor, some minor water work, looks like a lab!
  • Need to layout where things should go on the floor to organise space, power cables etc.
Topic attachments
I Attachment History Action Size Date Who Comment
GIFgif 20170224_FocusFrame.gif r1 manage 1471.3 K 01 Mar 2017 - 12:25 MarkWard  
GIFgif A540_C100_E2_S60.gif r1 manage 80.7 K 01 Mar 2017 - 12:23 MarkWard  
GIFgif A560_C050_E2_S60.gif r1 manage 19.2 K 01 Mar 2017 - 12:23 MarkWard  
GIFgif A560_C050_E2_S60_z.gif r1 manage 112.3 K 01 Mar 2017 - 12:23 MarkWard  
GIFgif A560_C100_E2_S60.gif r1 manage 39.5 K 01 Mar 2017 - 12:23 MarkWard  
GIFgif A560_C200_E2_S20.gif r1 manage 141.6 K 01 Mar 2017 - 12:23 MarkWard  
JPEGjpg DSC_3975.jpg r1 manage 172.7 K 01 Mar 2017 - 11:58 MarkWard  

Physics WebpagesRHUL WebpagesCampus Connect • Royal Holloway, University of London, Egham, Surrey TW20 0EX; Tel/Fax +44 (0)1784 434455/437520

Topic revision: r1 - 01 Mar 2017 - MarkWard

This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2022 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding RHUL Physics Department TWiki? Send feedback