Title :
A high power driving and selection field coil for an open MPI scanner
Author :
Bringout, Gael ; Wojtczyk, H. ; Tenner, W. ; Graeser, Matthias ; Gruttner, M. ; Haegele, J. ; Duschka, R. ; Panagiotopoulos, N. ; Vogt, F.M. ; Barkhausen, J. ; Buzug, Thorsten M.
Author_Institution :
Inst. of Med. Eng., Univ. of Lubeck, Lubeck, Germany
Abstract :
Three Litz wires have been used in parallel in order to decrease the layer to layer voltage down to 4 kV and the coil voltage down to 8 kV. A two millimeter thick epoxy plate has been glued between each layer, in order to prevent any electrical breakdown between the layers. A special epoxy has been used to minimize the inner temperature of the coil, which reached 180°C with a dissipated power of 5.2 kW. The use of parallel Litz wire leads to currents having different phase angle in every wire which has to be corrected.
Keywords :
biomagnetism; biomedical electronics; biomedical equipment; biomedical imaging; coils; epoxy insulators; magnetic particles; wires; Litz wires; electrical breakdown; epoxy plate; glueing; high power driving; inner coil temperature; open MPI scanner; parallel Litz wire; power 5.2 kW; selection field coil; size 2 mm; temperature 180 C; voltage 4 kV; voltage 8 kV; Coils; Cooling; Educational institutions; Heating; Imaging; Temperature sensors; Wires;
Conference_Titel :
Magnetic Particle Imaging (IWMPI), 2013 International Workshop on
Conference_Location :
Berkeley, CA
Print_ISBN :
978-1-4673-5520-9
Electronic_ISBN :
978-1-4673-5521-6
DOI :
10.1109/IWMPI.2013.6528332
