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Message ID: 223     Entry time: Tue Feb 2 10:06:41 2010
Author: Damien Gallop 
Type:  
Category:  
Subject: Supernanogan development wind-up 

We ran 32S5+ overnight. Keerthi has been working with the new surface source oven for the last couple of weeks. His results to come. Meanwhile, here are a stripchart of overnight beam plus a few panels after my tweaking. Slits are at 5mm position.

Observations:

  • The heater responds smoothly in 0.1A steps.
  • There is an optimal heater setting; more is not necesaarily more.
  • As always, there are several RF resonances within a range.
  • Higher resonance produces more beam but less stable.
  • Lower resonance produces less beam but more stable.
  • Optimal heater loading technique and current setting will require further study.

Save: 100202_1000.snapiosfc6

Last stripchart is FC6 starting a couple of minutes before shutting off the heater.

Power down everything around 17:30, and turn off IOS turbos. I have left IOS:IV0 open to ensure the intermediate section gets vented before the cart is removed. I am leaving the MCIS turbos on for now,. to continue pumpimg residual sulphur.

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