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AbstractAbstract
[en] This addendum lists all D.C. type loads in the experimental areas and concludes that a saving in the order of $1,000,000 per year is feasible by ramping a large portion of these D.C. operated loads. These savings are based on using the new future main ring pulse with a flattop of 30 seconds and a pulse period of 63 seconds at 800 GeV. This mode of operation was successfully tested in all experimental areas on 2/15/88. It is estimated that the total D.C. magnet load in all experimental areas is about 12.7 MW of which 7.7 MW can be ramped. A conservative ramping program, with a risetime of about 13 seconds, which reaches flattop value 7 seconds ahead of the main ring flattop, appears to be the most practical, but some loads may need overshoot programming. Ramping the presently D.C. operated power supplies requires the installation and procurement of about 40 ramp cards (/number sign/150) at a total estimated cost of $24,000. This is a very modest expense compared to the potential savings
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22 Feb 1988; 15 p; Available from NTIS, PC A03; 3 as DE88007768; Paper copy only, copy does not permit microfiche production.
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