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Remembering ANS member Gil Brown
Brown
The nuclear community is mourning the loss of Gilbert Brown, who passed away on July 11 at the age of 77 following a battle with cancer.
Brown, an American Nuclear Society Fellow and an ANS member for nearly 50 years, joined the faculty at Lowell Technological Institute—now the University of Massachusetts–Lowell—in 1973 and remained there for the rest of his career. He eventually became director of the UMass Lowell nuclear engineering program. After his retirement, he remained an emeritus professor at the university.
Sukesh Aghara, chair of the Nuclear Engineering Department Heads Organization, noted in an email to NEDHO members and others that “Gil was a relentless advocate for nuclear energy and a deeply respected member of our professional community. He was also a kind and generous friend—and one of the reasons I ended up at UMass Lowell. He served the university with great dedication. . . . Within NEDHO, Gil was a steady presence and served for many years as our treasurer. His contributions to nuclear engineering education and to this community will be dearly missed.”
Ingrid Birkel
Nuclear Technology | Volume 168 | Number 1 | October 2009 | Pages 139-143
Dose/Dose Rate | Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (Part 1) / Radiation Protection | doi.org/10.13182/NT09-A9114
Articles are hosted by Taylor and Francis Online.
ANKA is a ramped 2.5-GeV electron synchrotron light source, which can be operated at all energies from 500 MeV to 2.5 GeV. An online area monitoring network makes it possible to measure the radiation from the decaying beam at eight stations every minute. It consists of two stationary and six mobile stations with a gamma and a neutron detector, which are connected with a central computer by a bus system. Measuring devices and software were developed or customized for ANKA.Special machine shifts were dedicated to the systematic investigation of beam lifetime and ambient equivalent dose, which depend on the beam energy, beam current, and operating conditions of the storage ring.The highest dose rates are measured in the forward direction of insertion devices. The beam is lost at the device with the smallest aperture. Local shielding of the storage ring and operating conditions can be improved with time-resolved dose rate measurements at locations with high dose levels. Low beta optics improves the lifetime of electron beams circulating in vacuum chambers with small aperture. This helps to reduce the dose rate. Furthermore, this has the advantage of reducing the dose rate without the drawback of extra costs for additional shielding.
