The GAPS prototype flight was a huge success and the results are published:
P. von Doetinchem, T. Aramaki, N. Bando, et al.
The flight of the GAPS prototype experiment
ASTROPART PHYS 54, 93 (2014), arXiv:1307.3538
I. Mognet, T. Aramaki, N. Bando, et al.
The Prototype GAPS (pGAPS) Experiment
NUCL INSTR METH A 735, 24 (2014), arXiv:1303.1615