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I3-122105.txt

Kyle Hazelwood, 01/15/2015 10:53 AM

 
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About I3/scale factors
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Tim has discovered an inconsistancy between MRF and CAMAC system. For CAMAC system 
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real table values are products of table values displayed and scale factor settings
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in card configuration. Currently MRF system only get a 'aprtial' table, face values 
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without scaling.
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To correct this there are two approches:
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1. keep CAMAC table tuning practice unchanged. When sending a table to MRF, scale
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factor value for the table is read and applied to table and then send to MRF. And when
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sending configuration settings, I3 has to to either re-send all tables for all cycles,
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or determine and re-send affected tables.
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2. By setting the CAMAC scale factor to 1 to enssentially eliminate scale factors.
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a) use a software multiplier to scaling table up and down. Real table values are products
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   of table face values and the multiplier. It always come and go along with the table.
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b) use a scaling command to aid tuning a curve up and down. You can pull out the command 
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   to input a scaling factor(>0 and <5) anytime during tuning a table. But table real
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   values are always the values displayed.
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The method 1 involves a lot parts of program, adding more compliactions in ensuring
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consistancies between parts of I3. We are already having consistancies problems between D1/2, I14 and I3. We are doing away the CAMAC system and so the scale factors. It 
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is more logical to go with Method 2b.