4 papers
WALTA school-network cosmic ray detectors
Richard Gran, R. Jeffrey Wilkes, Hans-Gerd Berns +1
The Washington Area Large-scale Time coincidence Array (WALTA) is placing particle detector arrays in secondary schools in the Seattle area to build up a large-scale ultra-high ene…
LabView Interface for School-Network DAQ Card
Hans Berns, T. H. Burnett, Richard Gran +5
A low-cost DAQ card has been developed for school-network cosmic ray detector projects, providing digitized data from photomultiplier tubes via a standard serial interface. To faci…
Emulsion Chamber Densitometry by Macroscopic Digital Imaging
E. L. Zager, R. J. Wilkes, J. J. Lord
Spot density is commonly used as an indication of shower energy in emulsion chambers. In a system originally developed for JACEE analysis, the optical density of a spot on x-ray fi…
The Washington Large Area Time Coincidence Array
J. G. Cramer, S. R. Elliott, J. F. Wilkerson +2
The number and density of schools in the Seattle area is convenient for the study of distributed particle showers produced at the top of the atmosphere by ultra-high energy (about…