The QuarkNet DAQ card for school-network cosmic ray detectors provides a low-cost alternative to using standard particle and nuclear physics fast pulse electronics modules. The board, which can be ...produced at a cost of less than 500.00 (USD), produces trigger time and pulse edge time data for 2- to 4-fold coincidence levels via a universal RS232 serial port interface, usable with any PC. Individual detector stations, each consisting of four scintillation counter modules, front-end electronics, and a GPS receiver, produce a stream of data in form of ASCII text strings in identifiable set of formats for different functions. The card includes a low-cost GPS receiver module, which permits time-stamping event triggers to about 50 nanosecond accuracy in UTC between widely separated sites. The technique used for obtaining precise GPS time employs the 1PPS signal, which is not normally available to users of the commercial GPS module. We had the stock model slightly custom-modified to access this signal. The method for deriving time values was adapted from methods developed for the K2K long-baseline neutrino experiment. Performance of the low-cost GPS module used is compared to that of a more expensive unit with known quality.
The QuarkNet DAQ card for school-network cosmic ray detectors provides a low-cost alternative to using standard particle and nuclear physics fast pulse electronics modules. The board, which can be ...produced at a cost of less than US500, produces trigger time and pulse edge time data for 2 to 4-fold coincidence levels via a universal RS232 serial port interface, usable with any PC. Individual detector stations, each consisting of 4 scintillation counter modules, front-end electronics, and a GPS receiver, produce a stream of data in form of ASCII text strings in identifiable set of formats for different functions. The card includes a low-cost GPS receiver module, which permits timestamping event triggers to about 50 nanosecond accuracy in UTC between widely separated sites. The technique used for obtaining precise GPS time employs the 1PPS signal, which is not normally available to users of the commercial GPS module. We had the stock model slightly custom-modified to access this signal. The method for deriving time values was adapted from the procedure developed for the K2K long-baseline neutrino experiment.
The QuarkNet DAQ card for school-network cosmic ray detectors provides a
low-cost alternative to using standard particle and nuclear physics fast pulse
electronics modules. Individual detector ...stations, each consisting of 4
scintillation counter modules, front-end electronics, and a GPS receiver,
produce a stream of data in form of ASCII text strings in identifiable set of
formats for different functions. The card includes a low-cost GPS receiver
module, which permits timestamping event triggers to about 50 nanosecond
accuracy in UTC between widely separated sites. The technique used for
obtaining precise GPS time employs the 1PPS signal, which is not normally
available to users of the commercial GPS module. We had the stock model
slightly custom-modified to access this signal. The method for deriving time
values was adapted from methods developed for the K2K long-baseline neutrino
experiment. Performance of the low-cost GPS module used is compared to that of
a more expensive unit with known quality.
The QuarkNet DAQ card for school-network cosmic ray detectors provides a low-cost alternative to using standard particle and nuclear physics fast pulse electronics modules. Individual detector ...stations, each consisting of 4 scintillation counter modules, front-end electronics, and a GPS receiver, produce a stream of data in form of ASCII text strings in identifiable set of formats for different functions. The card includes a low-cost GPS receiver module, which permits timestamping event triggers to about 50 nanosecond accuracy in UTC between widely separated sites. The technique used for obtaining precise GPS time employs the 1PPS signal, which is not normally available to users of the commercial GPS module. We had the stock model slightly custom-modified to access this signal. The method for deriving time values was adapted from methods developed for the K2K long-baseline neutrino experiment. Performance of the low-cost GPS module used is compared to that of a more expensive unit with known quality.
Simulating the Glast satellite with Gismo Burnett, T.; Chaput, C.; Arrighi, H. ...
Computing in science & engineering,
07/2000, Letnik:
2, Številka:
4
Journal Article
Recenzirano
One of the most interesting yet least explored areas of astrophysics is the gamma ray portion of the electromagnetic spectrum. One of gamma ray astronomy's most significant efforts has been the ...Compton Gamma Ray Observatory launched in 1991. Scientists from 21 institutions worldwide are now refining the newest gamma ray instrument, the Gamma Ray Large Area Space Telescope (Glast), which will continue CGRO's work. Our group has been involved primarily with software issues, particularly with an object-oriented Monte Carlo package called Gismo, which has modeled all aspects of the satellite's design and performance.
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