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Statistical check of FIDEL Transfer Function 2008 (start) – 2012 (present). Per Hagen (TE/MSC) FiDeL Team 03.07.2012. Background. Stephane F. remarked that the spread of the transfer function in FIDEL is large for MQY magnets
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Statistical check of FIDEL Transfer Function2008 (start) – 2012 (present) Per Hagen (TE/MSC) FiDeL Team03.07.2012
Background • Stephane F. remarked that the spread of the transfer function in FIDEL is large for MQY magnets • I checked the spread in the MQY measurement data against FIDEL and found significant mismatch • The MQY were all measured at “warm” but not all have “cold” data • Since the MQY has higher than nominal permeability in the collars (like MQ), I computed my own permeability corrections and “warm-to-cold offset”. • When I compared my own data with FIDEL I found several MQY circuits with strange mismatch • I gave the errors to Rogelio in ABP for further cross-check • I checked the spread in the other magnet families (measurements and FIDEL data) and found good agreements
Statistics for TF geo-gamma dipoles(correctors not included)
More MQY statistics (these magnets had high mu in some collars)
Details for MQY circuits • (comparison FIDEL versus SM18 DB and Per’s mu and warm-to-cold offset)
Presumed errors in FIDEL MQY TF • (Per’s private TF data set compared to FIDEL) Why are there only large negative errors?