09.02.2013 Views

October 2000 Newsletter - Naval Postgraduate School

October 2000 Newsletter - Naval Postgraduate School

October 2000 Newsletter - Naval Postgraduate School

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

RESEARCH CENTER<br />

RAD-HARD SEMICONDUCTOR CHIPS, continued from page 17<br />

Berkeley, University if Michigan and Vanderbilt and national<br />

laboratories such as; NRL, AFRL, NRAD, JPL, NSWC-<br />

Crane and Draper. Over the last 10 years more than 100 NPS<br />

student theses have been related to radiation effects in<br />

electronics. Some students return to the organizations that<br />

require knowledge on radiation effects which provide close<br />

ties with NPS. Much of the student thesis research interacts<br />

with the engineering duty organizations such as U.S. Navy<br />

Strategic Programs, National Reconnaissance Office and the<br />

Space and <strong>Naval</strong> Warfare Systems Command.<br />

Present and Recent NPS Radiation Effect Research Projects<br />

• 1995 – 1999: NPS faculty lead a program with NRL, UC<br />

THE “LINAC”, continued from page 17<br />

Figure 2 is a view of the accelerator taken from the electron gun end. Figure 3<br />

shows the power klystrons and Figure 4 shows the inside of the high voltage supply<br />

for the klystrons, which is also called the modulator.<br />

Early Research Areas<br />

The main interest of Franz Bumiller concerned the structure of deuterium and the<br />

neutron. This was investigated by measuring the angular distribution of electrons<br />

scattered by the deuterium target. These measurements yielded information about<br />

the distribution of charge in the neutron that is probably still valid today.<br />

Later nuclear experiments<br />

with R. Pittham from<br />

Darmstadt, Germany and<br />

collaborators discovered<br />

experimentally the electric<br />

quadrupole collective oscillation<br />

of medium to heavy<br />

nuclei, as predicted by A.<br />

Bohr. These experiments were<br />

--continued on page 50<br />

Figure 2 (above). A view of the<br />

“beamline.”<br />

Figure 3 (right). Three high power<br />

klystrons deliver power to one ten foot accelerator<br />

section.<br />

Berkeley, Motorola, Honeywell and others to develop<br />

semiconductor wafers for high performance GaAs ICs that<br />

could substitute the unhardened bulk GaAs wafer. The<br />

reengineered wafer is transparent to the manufacturing<br />

process, and provides radiation immunity. (Weatherford/<br />

Fouts)<br />

• 1997 – Present: Work has been performed in conjunction<br />

with the University of Michigan’s Center for Ultrafast<br />

Science to measure picosecond / nanovolt resolution<br />

signals internal to the chip. A 100 femtosecond pulsed<br />

laser is used to simulate a “soft error” and provide optical<br />

sampling to resolve electrical signals. This collabortation<br />

--continued on page 50<br />

Figure 4 (above).<br />

High voltage<br />

supply for the<br />

klystrons, which<br />

is also called the<br />

modulator.<br />

NPS Research page 49<br />

<strong>October</strong> <strong>2000</strong>

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!