Sector 7 Incident Beam Imaging for 7ID

Complete video microscope systems for long working distance microscopy

• Color camera Panasonic GP-KR222 with Infinity Model KV microscope manual (see README)


• Color camera Watec (WAT-202B) with Infocus System Model KC video lens (ELOG 1004)


• Mitutoyo Microscope Optics in used at Sector 7.
  Note that on 6/30/2015, I noticed that a single tube length of 152.5 mm (part number 56-992 from Edmunds) can be purchased
  instead of a 142.5 mm-long tube and part 55-743 in the link above. The distance to the focal plane from
  the end of the thread on the MT-4 tube lens is 170 mm. The difference of
  (170 - 152.5) mm = 17.5 mm is the back focal distance of a C-mount lens.
  (see MT-4 drawing for more details)

TV-Cameras

• Specifications of the new Watec Monochrome Camera LCL-903HS.
  This camera is a much improved redesign of the Watec 502A camera we have at the
  beamline. It has more TV lines (570 vs 400), lower sensitivity (0.0002 vs 0.05 Lux),
  a more solid BNC video connector, and many features selectable by dip switches.
  They cost 420$ at Edmunds, these are worth getting. They still sell also the 502A,
  for about 200$ and with a two weeks lead time.
• Specifications of the Supercircuit Monochrome Camera PC164C.
  This camera was first procured in May 2003. It also has low light
  sensitivity 0.0003 lux as the Watec, a nice housing and possibly a more
  reliable electrical connection. At 130$, they are truly disposable cameras.
  Bernhard Adams brought it to my attention and lended one to us. It is C-mount.
• Wikipedia on C-mount versus CS-mount lens systems.
  Note the 5-mm-thick spacer needed to mount a CS-mount lens to a C-mount camera.

Useful reference on YAG:Ce imaging

• Paper by Andreas Koch et. al, J. Opt. Soc. Am. A Vol. 15, No. 7 p 1940 July 1998 (APS access only)
• An Imaging System for Focusing Tests of Li Multi-Prism X-ray Refractive Lenses
  E. M. Dufresne, D.A. Arms, N.R. Pereira, P. Ilinski, and R. Clarke,
  Proceedings of the International Synchrotron Radiation Instrumentation Conference SRI2003 in San Francisco August 2003,
  AIP Conference Proceedings vol. 705, Melville New York, p780-783, April 6 (2004).(ISBN 0-7354-0180-2)
• Recent developments in computed tomography at GSECARS (restricted access)
  Mark Rivers, SPIE Volume 7804 (2010).

White beam imaging of an Undulator A beam at the APS

The Old Mirror Filter 1 tank now removed from 7ID was equipped with viewing
capabilities for the white beam and the singly reflected beam from the 
Pt/Rh coated mirror in the tank. This optical system was described in a
2000 APS Activity Report. This system was based on two achromat used with
the focal plane of each lens at either the YAG:Ce scintialltor screen position
or the camera. It had a long telescope between the lenses where the beam is
parallel, i.e. focused at infinity. Below is the Optical Density required for a
Neutral Density Filter to observe the beams with a regular video camera
and this optical system.

Pink beam imaging

The Mirror Filter 2 tank is equipped with viewing capabilities for the pink
beam and the monochromatic beam.

Monochromatic beam imaging

The imaging here uses a YAG, 500 micron thick, and 1:1 imaging of the YAG 
fluorescence onto a Watec CCD camera. For the monochromatic beam I found that
filters are needed to prevents saturation. Below are some of the filter choice
in various conditions of operation. On some occasion irises have been used as 
well to reduce the intensity and improve the resolution.
-------------------------------------------------------
Location    Camera            Filter  Comments
-------------------------------------------------------
7ID-C       Watec 502A        OD=1??
7ID-B       Watec LCL-903HS   OD=3   iris used to reduce the light.
7ID-A-MF2   Watec 502A        OD=2.5

The amount of filtering depends on the intensity of the beam and the sensitivity
of the camera.