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- W10006586 abstract "Excitation curves for at least one magnet of each length of TeV I Small Quadrupole have been measured utilizing the MIF-TeV I VAX standard measurement system. Since the standard measurement sequence does not include this sort of excitation curve, the standard reports issued on the magnet does not contain this data. Measurements were taken with the gradient probe SQ25 (probe ID No.40) centered in the aperture and extending through the field length to integrate the strength of the magnet. The parameter BETA2 reported below is the probe calibration factor for this probe in meters**2. The gradient strength of the magnet in Tesla-meters/meter is obtained from the measured flux by dividing by BETA2. The data were collected from MEAS BASE runs in which the measurement probe flux is recorded in a baseline measurement sequence. The hysteresis of the magnet is set by ramping to the specified maximum current then back to zero. The integrator is zeroed at zero current and the integrator voltage recorded one or more times. The current is then ramped successively to the measurement current where the integrator voltage is recorded, to full field and back to zero where the integrator voltage is again recorded for each current at which data is desired. After correction for drift, amplifier gain and integrator Re, the data is recorded in the Reduced data files. This report collects this data for measurements on several magnets. The data at non-zero currents are converted to Tesla and reported also in Tesla/Amp. In order to prepare the report entirely with the DATATRIEVE query language, the usual averaging of Probe Up and Probe Down measurements was not carried out. The reader is invited instead to look at both sets of data to observe that the error to be canceled is small. In addition, this report may not give the best final answers since the final probe calibration may differ from the one used here by a fraction of a per cent. The value used is shown to allow that correction to be made later if ever needed. The remanent field of the magnet is not measured by these procedures and no correction for its effect is made. The reported strengths are actually, therefore, the difference in strength between the magnet at measured current and its strength at zero current." @default.
- W10006586 created "2016-06-24" @default.
- W10006586 creator A5030043174 @default.
- W10006586 date "1985-02-01" @default.
- W10006586 modified "2023-09-24" @default.
- W10006586 title "Excitation Curves of small quadrupoles for tev I Beam Line Use" @default.
- W10006586 doi "https://doi.org/10.2172/948887" @default.
- W10006586 hasPublicationYear "1985" @default.
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