HIREGS was built by scientists and engineers at the University of California at Berkeley (UCB) and San Diego (UCSD), at the Lawrence Berkeley National Laboratory (LBNL), and at CESR in Toulouse, France. It has flown three times thus far in December-January '91/'92, '92/'93, and '94/'95.
The science and engineering team responsible for the design, development, fabrication, testing, and flight operations includes UCB professor, Bob Lin, UCSD professor, Mike Pelling, UCB post-doc, Said Slassi-Sennou, ex-UCB graduate student, Paul Feffer, UCB graduate student, Steve Boggs, UCB electrical engineer, Henry Primbsch, UCB electrical engineer, Steve McBride, UCB electrical engineer, Greg Zimmer, UCB mechanical engineer, Ken Youssefi, UCB technician, Marsha Colby, LBNL engineer, Norm Madden, UCSD engineer, Fred Duttweiler, UCSD programmer, Dan MacDonald, UCSD engineer, Dan Schickele, Meer Instruments consultant, Jim Billups, and Multispectra Engineering consultant, Jeremy Guralnick. And prior to HIREGS, ex-UCB graduate student, David Smith participated in two Antarctic balloon expeditions to fly another X-ray/gamma-ray instrument that helped lay the logistics groundwork for the HIREGS campaigns.