I think controlling it is probably like driving a Testarossa in downtown
Atlanta traffic. Lots of energy gain from a small core

On Tuesday, July 23, 2013, Alan Fletcher wrote:

> > From: "David Roberson" <[email protected] <javascript:;>>
> > Sent: Tuesday, July 23, 2013 1:32:36 PM
> > Subject: [Vo]:DGT Control Not Trivial
>
> > It has been an interesting day indeed. One observation that I made is
> > that the thermal and plasma control of the DGT device is not so
> > easy. It appeared to take quite a balancing act in order for the
> > device to work within its desired range and the guys handling the
> > controls had their hands full most of the time.
>
> From the Q&A I *think* they said that they
>
> a) balance the front-to-back temperature
> b) Use the SLOPE of one of the curves (I forget which) as a simple and
> accurate control
> c) Turn the pulses on and off (here they kept it constant)
>
> I suspect that c) is there main control method, so they have to juggle the
> other parameters more than usual.
>
> The last time I looked they lowered the heater temp and the output temp
> dropped dramatically (100-ish). It's rising again, but erratically.
>
>

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