magnet_calibration#

provides a graphic user interface which allows to calibrate the B-field vs. current of the electromagnet.

screenshot of the magnet_calibration gui

Input parameters are:

  • I_min: minimum of the measurement current (should be above -4 A)

  • I_max: maximum of the measurement current (should be below 4 A)

  • step: stepsize (in A) in the applied current I during the calibration measurement

  • loops: number of measurement loops

  • B_min: minimum of the plot range in mT

  • B_max: maximum of the plot range in mT

  • filename: name of the file in which the data is stored

Available buttons:

  • start: starts the measurement (always available)

  • pause: pauses the measurement (only available during the measurement)

  • select path: selects the directory where the data is saved (always available)

  • save data: saves the data (only available after a measurment is finished)

The program saves the data in the following format:

# I (A)  Bup(mT)         Bdown (mT)
-4.00   703.80  704.36
-3.90   697.09  696.50
-3.80   689.92  688.27
-3.70   682.31  679.57