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  • Overlap Integral Fits done using 20130205_1627/fit_parameters_input.dat on shift - the previous week's M2.
  • Overlap Integral Fits done using 20130210_1637/fit_parameters_input.dat for post shift analysis of quad scan

20130207 Shift

Plans

Accelerator

  • SAVE OPTICS!!!!
  • Increase charge to ideally between 0.7 and 1.0
  • Spend a little time to optimise linac / transport for higher charge and stability

Optics

  • Load Lw optics
  • Upstream steering to minimise background (before FF)
  • Vertical Dispersion measurement / correction at LWIP - using Glen's FS tool. Measure after correction as well to verify - sometimes takes more than once
  • Coupling correction - using upstream OTRs?
  • Steer to centre of QM16FF
  • BBA QM16,15,14,13 and 12FF - manual or using Glen's FS tool
  • Most importantly 14, then 15, but ideally both.
  • Reduce ipangle to < 100urad in both dimensions
  • Check background

OTR

  • Verify vertical beam size
  • Quick quad scan to optimise QM14FF strength
  • Update horizontal size in EDM

CBPM Resolution Logs

  • Move chamber until MFB2FF not saturated - ie at minimum ADC counts - use CBPM panel
  • Log 5 sets of CBPM data using CBPM EDM - 500 pulses per set - for resolution measurements
  • Vertical Dispersion measurement / correction at LWIP - using Glen's FS tool. Measure after correction as well to verify - sometimes takes more than once

Laser-wire Startup

  • Spatial Alignment
  • Temporal Alignment
  • Optimise, Vertical, Phase, Horizontal; repeat.

  • Charge ramp - Log 1000 pulses on collisions
  • Laser ramp - Log 1000 pulses on collisions
  • Charge ramp - Log 1000 pulses off collisions (ie laser off but same position)

PLIC Detector

  • Turn up vertical scale on PLIC and compare laser on laser off on collisions - anything at all?

Data Synchronicity

  • While on collisions, block laser beam upstairs for a couple of pulses; repeat about 10 times in 500 pulse log
  • Use single shot mode of accelerator to fire one electron bunch during say 500 pulse log; repeat about 10 times
  • Check syncrhonicity of refc1amp, cherenkov, laserenergy, photodiode

Laser-wire Angular Dependence

  • Back on collisions
  • Move QM14FF on movers slightly to affect angle at LWIP - need to make large steps in angle +- 200urad in angle
  • Compare laser on, laser off signal to background ratio at each point with two separate logs

Scans

  • check optimisation of laser-wire via
  • Phase scan
  • Long range horizontal -2200 -> +2200 chahor, 80 steps, 15 samples at each
  • Vertical scan - usual - 70 points, 20 samples
  • Vertical scans at +- 25um, 50um, 75um, 100um horizontally - may need to use linear scan for larger ones at sides as nonlinear too narrow

MFB2FF Alignment

  • Save positions for optimal laser-wire position - 100 pulse log (for bpm information)
  • Move chamber for best MFB2FF position
  • Save positions here - 100 Pulse Log

The Almighty LW Quad Scan

  • NOTE quad scan should go in order - NOT middle first, then out, to avoid hysteresis or drift of accelerator effects in results
  • Save accelerator set file at beginning!!! for e beam modelling purposes!
  • 11 point quad scan
  • Centre +- 1,2,3,5,7A on QM14FF
  • At each point:
  • Horizontal scan -2000 -> + 2000, 50 points, 10 samples -> move to centre at end
  • Small linear vertical scan to centre properly
  • Nonlinear vertical scan - 70 points, 15 samples

The Almighty OTR Quad Scan

  • Repeat above quad scan, but with OTR images
  • 3 samples at each magnet current

RELOAD OPTICS

  • Save our optics!
  • Quads
  • Steering
  • Optics save again

On Shift

The Best Laid Plans...

Laser build up time had increased yesterday, but not significantly. I have avoided using the laser due to damage on the etalon and this only gets worse with use. Today, the build up time was much longer again. The maximum output from the regen is 4mJ, which is very low. Slight tweaks really didn't improve it at all. Tried various pockel's cells timing, but no improvement. Removed etalon and unseeded regen output is 17mJ, which is down from last week's 24mJ. So, likely cavity is also degrading, but still expect around 12/24mJ (with etalon / without etalon - last week) out, which would be around 8.5mJ with etalon.

Further damage is evident on the etalon in the new position and there isn't much space to move the laser beam anywhere else.

So, current regen output around 4.2mJ. Maximum output from laser around 70mJ upstairs.

Took access and checked alignment downstairs - corrected slightly. Tweaked green upstairs on energy meter.

Optics

Loading set file ***.dat. Changing magnets QM15,14,13,12FF.

  • Laser-wire signal attenuation was 9dB last week to take best advantage of ADC range. Typical background level was 8800 ADC counts.
  • Changed attenuation to 14dB - aim for 5000 ADC counts background with this attenuation or lower.

OTR

  • Horizontal (otr switch) scan with focus scan at each location
  • Focus Scan
initial position ip:otrlens:z 14.25000, scan range: 12.4 - 14.4, step: 0.1 mm, best position - 13.4000
  • OTR Focus Scan:
    focus.jpg

  • Quad Scan
scan range QM14FF: -80 - -100 A, step 2.5 A, best position: -89.37171

  • quad.jpg:
    quad.jpg

QM14FF Current
-80.0

01:30 LW

  • Positions saved after OTR and before LW alignment - 20130208_0126_pos.dat

02:00 Alignment

  • Set manipulator to 8820 (where laser was before)
  • Vertical & Horizontal scans with chamber -> look at wire-scanner detector
  • Set V:185, H:250
  • Timing ok - Set voltage to 5.0V

Horizontal Alignment Vertical Alignment
20130208_0158_lws_xy_errbar_plot.png 20130208_0149_lws_xy_errbar_plot.png

  • Initial scan - collisions!
  • Within 20um of aligned position.
  • Signal:Background ~ 1:8 so not great, but visible
  • Laser energy downstairs is estimated to be 33mJ post-ip although this is a slight underestimate
  • Comparing to previous shift, signal to background is approximately the same accounting for lower laser energy

Phase Scan

20130208_0224_lws_xy_fit_plot.png

Initial Collision Scan

20130208_0240_lws_xy_fit_plot.png

Laser-wire Vertical Scan

20130208_0253_lws_xy_fit_plot.png

Laser-wire Horizontal Scan

20130208_0243_lws_xy_fit_plot.png

Laser-wire Phase Scan

20130208_0303_lws_xy_fit_plot.png

Phase scan suggested a voltage of 4.47V and we set to that. Then repeated vertical scan, but signal vastly reduced. Setting back to original 5.0V and rescanning vertical.

  • Charge dropping off - Mod #2 very sensitive. Alex retuning linac
  • Signal was dropping off despite returning to same position - not clear what's happening
  • Laser energy the same both before and after LWIP (photodiode & laseren)

Things got worse...

20130208_0309_lws_xy_fit_plot.png

  • Phase, Horizontal, Vertical again...

  • Phase set to 4.74V, Horizontal set to 62. Vertical scan nonlinear about chaver:151, 60 points, 20 samples
  • Vertical scan quite good!!! Shows 1.7 +- 0.23um. Larger size before must have been due to horizontal offset.
  • Amplitude 0.72 vs background 4.2

Re-aligned Proper Vertical Scan Apparently small...
20130208_0418_lws_xy_fit_plot4.png 20130208_0437_lws_xy_fit_plot3.png

More Sensible... Pretty Good
20130208_0453_lws_xy_fit_plot2.png 20130208_0504_lws_xy_fit_plot3.png

Horizontal Slicing

  • Centre is chahor:62
  • Using cherenkovcnbgslen

ChaHor Filename Size
62 (centre) 20130208_0418_lws 1.71 +- 0.26um
72 20130208_0437_lws 0.73 +- 0.23um
82 20130208_0453_lws 1.73 +- 0.25um
92 20130208_0504_lws 1.23 +- 0.18um

* Not showing clear dependence -> step size too small. Also better to take a few scans at each location.

* 62, +-50, +-100 -> 3 scans as each location

ChaHor Filename Size
62 20130208_0418_lws 1.71 +- 0.26um
62 20130208_0517_lws 2.35 +- 0.16um
62 20130208_0527_lws 2.63 +- 0.18um
72 20130208_0536_lws 1.50 +- 0.2um

*set file: set13feb080608.dat

LW Quad Scan

  • Vertical Linear - 20 steps - 10 samples - +-20um
  • Horizontal Linear - 30 steps - 20 samples - +-700um
  • Vertical Nonlinear - 50 steps - 20 samples - default range

  • Repeat above pattern for each quad setting.
  • After each scan, set that axis to its centre
  • Do quads in order to avoid hysteresis or beam wander effects

QM14FF FilenameV FileNameH FileNameNL
80 20130208_0614_lws 20130208_0618_lws 20130208_0631_lws
84 20130208_0639_lws 20130208_0643_lws 20130208_0653_lws
86 20130208_0701_lws 20130208_0712_lws 20130208_0723_lws
88 20130208_0730_lws 20130208_0732_lws 20130208_0742_lws
89 20130208_0750_lws 20130208_0752_lws 20130208_0802_lws
90 20130208_0810_lws 20130208_0812_lws 20130208_0822_lws
91 20130208_0829_lws 20130208_0832_lws 20130208_0842_lws
92 20130208_0849_lws 20130208_0852_lws 20130208_0902_lws
94 20130208_0910_lws 20130208_0913_lws 20130208_0923_lws
96 20130208_0930_lws 20130208_0939_lws 20130208_1010_lws
100 20130208_1019_lws 20130208_1021_lws 20130208_1031_lws

Reanalysis post shift in table below

QM14FF Vertical Fit Horizontal Fit NonLinear Using s_ex = 235.0 Nonlinear using s_ex = horizontal
80 5.21 +- 0.84 202.2 +- 9.1 6.1 +- 0.3 6.27 +- 0.33
84 2.29 +- 0.6 138.1 +- 9,3 5.0 +_ 0.3 6.25 +- 0.32
86 5.39 +- 0.44 162.0 +- 6.3 4.26 +- 0.3 5.21 +- 0.34
88 1.23 +- 0.27 192.5 +- 6.2 3.0 +- 0.4 3.39 +- 0.38
89 1.38 +- 2.02 161.7 +- 12.6 1.3 +- 0.6 2.18 +- 0.47
90 1.5 +- 1.05 174.4 +- 13.1 3.1 +- 0.5 3.67 +- 0.44
91 1.14 +- 1.44 304.4 +- 43.1 3.2 +- 0.5 2.59 +- 0.58
92 1.86 +- 0.83 150.3 +- 9.0 0.74 +- 0.5 1.91 +- 0.31
94 2.35 +- 1.05 184.2 +- 9.5 2.11 +- 0.4 2.64 +- 0.40
96 1.38 +- 2.02 200.8 +- 13.1 5.12 +- 1.24 5.54 +- 1.37
100 4.96 +- 1.53 201.6 +- 45.5 3.74 +- 1.30 2.52 +- 1.40

  • 20130208_0701_lws - problem with this file

The uncertainty on the sigma from the initial vertical scans is obviously very high (and even unphysical), however, the purpose of this scan is purely to determine the centre vertically for the best horizontal scan and although there is insufficient data for an accurate vertical vertical measurement, the reduced data provides a quick scan and sufficient data to ascertain the vertical centre to within a few microns - adequate for both the horizontal scan and the subsequent non-linear vertical scan.

QM14FF Vertical Fit Horizontal Fit Nonlinear using s_ex = horizontal
80 20130208_0614_lws_xy_fit_plot1.png 20130208_0618_lws_xy_fit_plot2.png 20130208_0631_lws_xy_fit_plot2.png
84 20130208_0639_lws_xy_fit_plot1.png 20130208_0643_lws_xy_fit_plot1.png 20130208_0653_lws_xy_fit_plot5.png
86 20130208_0701_lws_xy_fit_plot.png 20130208_0712_lws_xy_fit_plot1.png 20130208_0723_lws_xy_fit_plot2.png
88 20130208_0730_lws_xy_fit_plot1.png 20130208_0732_lws_xy_fit_plot1.png 20130208_0742_lws_xy_fit_plot3.png
89 20130208_0750_lws_xy_fit_plot1.png 20130208_0752_lws_xy_fit_plot1.png 20130208_0802_lws_xy_fit_plot2.png
90 20130208_0810_lws_xy_fit_plot1.png 20130208_0812_lws_xy_fit_plot1.png 20130208_0822_lws_xy_fit_plot2.png
91 20130208_0829_lws_xy_fit_plot1.png 20130208_0832_lws_xy_fit_plot2.png 20130208_0842_lws_xy_fit_plot2.png
92 20130208_0849_lws_xy_fit_plot1.png 20130208_0852_lws_xy_fit_plot1.png 20130208_0902_lws_xy_fit_plot2.png
94 20130208_0910_lws_xy_fit_plot1.png 20130208_0913_lws_xy_fit_plot1.png 20130208_0923_lws_xy_fit_plot2.png
96 20130208_0930_lws_xy_fit_plot1.png 20130208_0939_lws_xy_fit_plot1.png 20130208_1010_lws_xy_fit_plot3.png
100 20130208_1019_lws_xy_fit_plot1.png 20130208_1021_lws_xy_fit_plot1.png 20130208_1031_lws_xy_fit_plot2.png

  • quad_LW.png:
    quad_LW.png

  • Log on collisions with charge varied
  • Log on collisions with laser energy varied
  • Log with no laser for background

OTR Quad Scan

Corresponding OTR quad scan to LW scan. Three samples at each point. Repeat in same order as laser-wire.

  • quad_OTR.png:
    quad_OTR.png

  • Laser-wire optics saved - set13feb08_1102.dat
  • Restored previous ATF2 optics set13feb07_19

Quad Scan / Shift Analysis

Firstly, having a look at the vertical sigma from both the quick linear vertical scans for centring and the full resolution nonlinear vertical scans. There isn't the clear parabola that one would ideally expect from a quad scan. However, there is an approximate minimum. From the scans above it is clear that the signal to noise ratio is too low near the end of the quad scan - due to degraded laser energy at the end of the shift as well as the accelerator conditions changing as the machine heats up in the day.

Vertical Sigma Vertical Sigma (NL Scans)
20130208_quad_vertical_sigma.png 20130208_quad_nl_vertical_sigma.png

Next, the horizontal sigma. This shows no clear pattern and changes quite dramatically through the quad scan.

Horizontal Sigma
20130208_quad_horizontal_sigma.png

Having a look at the centre of the horizontal and vertical scans, the vertical has a clear and linear sweep in centre throughout the quad scan, however, the horizontal centre shows no clear trend.

Horizontal Centre Vertical Centre (NL Scans)
20130208_quad_horizontal_centre.png 20130208_quad_nl_vertical_centre.png

From this quad scan it is clear that the time for scans must be minimised. The quick vertical scans for alignment produce reasonable results due to the short time they are recorded over and therefore the consistency of experimental conditions. The high resolution nonlinear scans obviously have a lower uncertainty, but this could be even lower if the beam / conditions were more consistent throughout the scan. Swings in charge normalised background can be seen in the raw data for the quad scans (above ones are background subtracted - linear model between first and last 5% of data). This is linked directly with tuning of the linac. The linac energy is unstable on the timescale of about 5 - 15 minutes, which is the approximate timescale for a detailed laser-wire scan. The horizontal laser-wire scans are the longest purely due to the distance required for the chamber to travel. It is unlikely that we can change the behaviour of the linac so therefore we must shorten scan times.

All of this is because there is some dispersion at our location. Changes in the energy affect the size and the position of the beam. Therefore, even without touching the linac during a scan, it will still drift and we'll be sensitive to it. Dispersion must be at least measured and ideally corrected. Furthermore, the beam based alignment wasn't performed so there was a clear drift in position with change in magnet strength.

It is also possible that the beam is coupled coming into the LWIP area. In this case, the quad scan would rotate the beam as well. If the rotation angle is on the order of about 20mrad, the projected beam size by the laser-wire will be almost double its original value - dependent on proportions of electron beam of course and the unknown angle between the laser-wire axis and the nominal electron beam axis.

Analysis files were put in 20130213_1436_qwd in ana directory manually.

Improvements to be made

  • Software to automatically analyse the quad scan from a list of files for each scan type
  • ControlPlot2 showing cherenkov, cherenkovcn, cherenkovcnbgs, cherenkovcnbgslen
  • Increase horizontal chamber speed to 50um/s - currently 20um/s to at least halve horizontal scan time
  • Don't tune linac during any scan - if transmission drops off - stop scan, fix, repeat scan
  • Perform Dispersion measurement and correction
  • Perform BBA on magnets around us
  • Perform coupling measurement and correction

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng 20130208_0149_lws_xy_errbar_plot.png r1 manage 30.3 K 07 Feb 2013 - 18:11 LaurieNevay Vertical Alignment
PNGpng 20130208_0158_lws_xy_errbar_plot.png r1 manage 29.3 K 07 Feb 2013 - 17:58 LaurieNevay Horizontal Alignment
PNGpng 20130208_0224_lws_xy_fit_plot.png r1 manage 49.6 K 07 Feb 2013 - 18:00 LaurieNevay Phase Scan in APD
PNGpng 20130208_0240_lws_xy_fit_plot.png r1 manage 54.5 K 14 Feb 2013 - 06:37 LaurieNevay Initial Collision Scan
PNGpng 20130208_0243_lws_xy_fit_plot.png r1 manage 55.5 K 07 Feb 2013 - 18:15 LaurieNevay LW Horizontal Scan
PNGpng 20130208_0253_lws_xy_fit_plot.png r1 manage 55.5 K 07 Feb 2013 - 18:11 LaurieNevay Vertical Scan at Horizontal Centre
PNGpng 20130208_0303_lws_xy_fit_plot.png r1 manage 51.4 K 07 Feb 2013 - 18:10 LaurieNevay LW Phase Scan
PNGpng 20130208_0309_lws_xy_fit_plot.png r1 manage 46.9 K 14 Feb 2013 - 06:37 LaurieNevay Things got worse...
PNGpng 20130208_0418_lws_xy_fit_plot4.png r1 manage 53.7 K 14 Feb 2013 - 06:39 LaurieNevay Re-aligned Proper Vertical Scan
PNGpng 20130208_0437_lws_xy_fit_plot3.png r1 manage 57.5 K 14 Feb 2013 - 06:40 LaurieNevay Apparently small...
PNGpng 20130208_0453_lws_xy_fit_plot2.png r1 manage 56.0 K 14 Feb 2013 - 06:40 LaurieNevay More Sensible
PNGpng 20130208_0504_lws_xy_fit_plot3.png r1 manage 53.3 K 14 Feb 2013 - 06:41 LaurieNevay Pretty good
PNGpng 20130208_0614_lws_xy_fit_plot1.png r1 manage 53.3 K 14 Feb 2013 - 04:25 LaurieNevay 0614_vertical
PNGpng 20130208_0618_lws_xy_fit_plot2.png r1 manage 60.7 K 14 Feb 2013 - 04:32 LaurieNevay 0618 horizontal
PNGpng 20130208_0631_lws_xy_fit_plot2.png r1 manage 54.0 K 14 Feb 2013 - 04:39 LaurieNevay 0631 nl vertical
PNGpng 20130208_0639_lws_xy_fit_plot1.png r1 manage 58.6 K 14 Feb 2013 - 04:27 LaurieNevay 0639 vertical
PNGpng 20130208_0643_lws_xy_fit_plot1.png r1 manage 58.8 K 14 Feb 2013 - 04:33 LaurieNevay 0643 horizontal
PNGpng 20130208_0653_lws_xy_fit_plot5.png r1 manage 54.6 K 14 Feb 2013 - 04:40 LaurieNevay 0653 nl vertical
PNGpng 20130208_0701_lws_xy_fit_plot.png r1 manage 53.1 K 14 Feb 2013 - 04:28 LaurieNevay 0701 vertical
PNGpng 20130208_0712_lws_xy_fit_plot1.png r1 manage 59.9 K 14 Feb 2013 - 04:33 LaurieNevay 0712 horizontal
PNGpng 20130208_0723_lws_xy_fit_plot2.png r1 manage 55.4 K 14 Feb 2013 - 04:40 LaurieNevay 0723 nl vertical
PNGpng 20130208_0730_lws_xy_fit_plot1.png r1 manage 55.4 K 14 Feb 2013 - 04:28 LaurieNevay 0730 vertical
PNGpng 20130208_0732_lws_xy_fit_plot1.png r1 manage 60.1 K 14 Feb 2013 - 04:34 LaurieNevay 0732 horizontal
PNGpng 20130208_0742_lws_xy_fit_plot3.png r1 manage 52.1 K 14 Feb 2013 - 04:41 LaurieNevay 0742 nl vertical
PNGpng 20130208_0750_lws_xy_fit_plot1.png r1 manage 52.7 K 14 Feb 2013 - 04:29 LaurieNevay 0750 vertical
PNGpng 20130208_0752_lws_xy_fit_plot1.png r1 manage 58.0 K 14 Feb 2013 - 04:35 LaurieNevay 0752 horizontal
PNGpng 20130208_0802_lws_xy_fit_plot2.png r1 manage 53.8 K 14 Feb 2013 - 04:41 LaurieNevay nl vertical
PNGpng 20130208_0810_lws_xy_fit_plot1.png r1 manage 53.5 K 14 Feb 2013 - 04:29 LaurieNevay 0750 vertical
PNGpng 20130208_0812_lws_xy_fit_plot1.png r1 manage 60.6 K 14 Feb 2013 - 04:35 LaurieNevay 0812 horizontal
PNGpng 20130208_0822_lws_xy_fit_plot2.png r1 manage 52.2 K 14 Feb 2013 - 04:42 LaurieNevay 0822 nl vertical
PNGpng 20130208_0829_lws_xy_fit_plot1.png r1 manage 52.7 K 14 Feb 2013 - 04:30 LaurieNevay 0829 vertical
PNGpng 20130208_0832_lws_xy_fit_plot2.png r1 manage 60.0 K 14 Feb 2013 - 04:36 LaurieNevay 0832 horizontal
PNGpng 20130208_0842_lws_xy_fit_plot2.png r1 manage 52.5 K 14 Feb 2013 - 04:42 LaurieNevay 0842 nl vertical
PNGpng 20130208_0849_lws_xy_fit_plot1.png r1 manage 53.1 K 14 Feb 2013 - 04:30 LaurieNevay 0849 vertical
PNGpng 20130208_0852_lws_xy_fit_plot1.png r1 manage 56.9 K 14 Feb 2013 - 04:36 LaurieNevay 0852 horizontal
PNGpng 20130208_0902_lws_xy_fit_plot2.png r1 manage 51.0 K 14 Feb 2013 - 04:43 LaurieNevay 0902 nl vertical
PNGpng 20130208_0910_lws_xy_fit_plot1.png r1 manage 55.6 K 14 Feb 2013 - 04:31 LaurieNevay 0910 vertical
PNGpng 20130208_0913_lws_xy_fit_plot1.png r1 manage 60.6 K 14 Feb 2013 - 04:37 LaurieNevay 0913 horizontal
PNGpng 20130208_0923_lws_xy_fit_plot2.png r1 manage 53.0 K 14 Feb 2013 - 04:43 LaurieNevay 0923 nl vertical
PNGpng 20130208_0930_lws_xy_fit_plot1.png r1 manage 52.2 K 14 Feb 2013 - 04:31 LaurieNevay 0930 vertical
PNGpng 20130208_0939_lws_xy_fit_plot1.png r1 manage 61.9 K 14 Feb 2013 - 04:37 LaurieNevay 0939 horizontal
PNGpng 20130208_1010_lws_xy_fit_plot3.png r1 manage 53.5 K 14 Feb 2013 - 04:44 LaurieNevay 1010 nl vertical
PNGpng 20130208_1019_lws_xy_fit_plot1.png r1 manage 54.2 K 14 Feb 2013 - 04:32 LaurieNevay 1019 vertical
PNGpng 20130208_1021_lws_xy_fit_plot1.png r1 manage 60.2 K 14 Feb 2013 - 04:38 LaurieNevay 1021 horizontal
PNGpng 20130208_1031_lws_xy_fit_plot2.png r1 manage 50.9 K 14 Feb 2013 - 04:44 LaurieNevay 1031 nl vertical
PNGpng 20130208_quad_horizontal_centre.png r1 manage 25.6 K 14 Feb 2013 - 06:08 LaurieNevay Quad Horizonal Centre
PNGpng 20130208_quad_horizontal_sigma.png r1 manage 25.0 K 14 Feb 2013 - 06:07 LaurieNevay Quad Horizontal Sigma
PNGpng 20130208_quad_nl_vertical_centre.png r1 manage 24.6 K 14 Feb 2013 - 06:07 LaurieNevay Quad NL Vertical Centre
PNGpng 20130208_quad_nl_vertical_sigma.png r1 manage 25.9 K 14 Feb 2013 - 06:06 LaurieNevay Quad NL Vertical Sigma
PNGpng 20130208_quad_vertical_sigma.png r1 manage 26.3 K 14 Feb 2013 - 06:06 LaurieNevay Quad Vertical Sigma
JPEGjpg focus.jpg r1 manage 696.9 K 07 Feb 2013 - 16:42 KonstantinKruchinin OTR Focus Scan
JPEGjpg quad.jpg r1 manage 629.2 K 07 Feb 2013 - 16:45 KonstantinKruchinin  
PNGpng quad_LW.png r1 manage 30.7 K 10 Feb 2013 - 01:05 KonstantinKruchinin  
PNGpng quad_OTR.png r1 manage 43.3 K 10 Feb 2013 - 01:07 KonstantinKruchinin  
Unknown file formateps quad_scan_1.eps r1 manage 65.5 K 10 Feb 2013 - 01:00 KonstantinKruchinin  
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Topic revision: r12 - 14 Feb 2013 - LaurieNevay

 
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