Transcript PMQ1 version 2.ppt

PMQ1 version 2
Magnetic Measurements
BL vs X fit
• BL vs X, mean of runs 1,2,3 & 4
• Integrated Gradient mean = 4.3127 +/- 0.0104
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Run 1 = 4.3235 +/- 1.3113e-002
Run 2 = 4.3180 +/- 1.2802e-002
Run 3 = 4.3095 +/- 1.0792e-002
Run 4 = 4.2997 +/- 1.0800e-002
• Temperature = 21.5 +/- 0.2 degree C
BL vs X plots
Integrated Gradient Measurements
• Measured integrated gradient using Metrolab
instead of HP 3458A because there were too
few points for the 3458A measurement. The
deadtime of the 3458A measurement was
causing a significant under reporting of the
voltage (~15%).
• BL vs X run 2 in Setup foldre, which uses the
3458A has a
Integrated Gradient = 3.6828 +/- 0.016131 T.
Hall probe check of Integrated
Gradient
• Runs 5, 6 and 7. 5 & 6 used small flexible
Lakeshore (diameter 30 mils) hall probe
which broke. Run 7 used larger Syprius
hall probe (diameter 40 mils).
• BL mean = 4.1627 +/- 0.4637 Tesla.
• Ratio BL Hall/Wire = 4.1627/4.1322 =
1.00737 which is reasonable given the
difficulties in aligning the hall probe.