The LEBIT 9.4 T Penning trap system R. Ringle, G. Bollen, D. Lawton, P. Schury, S. Schwarz and T. Sun Eur. Phys. J. A, 25 3 (2005) 59-60 Published online: 05 July 2005 DOI: 10.1140/epjad/i2005-06-132-y