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Muon Project

Aware Coincidence Box Decoder (C-Box): $85
Aware Triple Coincidence Box Decoder (Triple C-Box) $129
Phone or write to order or for more details.
Aware Coincidence Box
To: Bryan J. Boardman, Aware Electronics Corp.:

I just posted graphs of 1) A week-long muon observation in the normal up-down coincidence detector position and 2) Around day-long muon observations of the coincidence detector placed in NS, EW positions and 45 deg, angles facing N,E,W, and S.

The week-long graph shows a slight downturn in the regression line. Perhaps it is connected with the passing of a sunspot at the start of the week. The variations in the coincidence detector positions clearly shows different average muon counts with the EW and NS positions the lowest and the 45 deg angle positions slightly higher but lower than the up-down position. The new data is posted (together with the previous data) at:
Monitoring Muons on the Surface of the Earth

Viewers are welcome to analyze and relate the data to astronomical changes and send feedback to the email address listed on my website.

James Petrait
St. Croix, U.S.Virgin Islands

Be sure to check out James's great Muon website by-way-of the link above.

Ron Fleshman's Cosmic Rays page uses two RM-60s, an Aware Coincidence Box, a telephone line splitter and two copies of Aw-Radw software to record both cosmic ray hits and background radiation levels:
Ron Fleshman's Cosmic Rays
Pisgah Astronomical Research Institute's Cosmic Ray Monitor uses two RM-70s and an Aware Coincidence Box:
Pisgah Astronomical Research Institute's Cosmic Ray Monitor
Cosmic ray info.:
Terrestrial cosmic ray intensities

We now sell a triple coincidence box (Triple C-Box $129) for use with three RMs to plot Electromagnetic cascades in lead for generation of Rossi Curve.

Rossi Curve Info.:
Demonstrating cosmic ray induced electromagnetic cascades

Bruno Rossi info.:

Dear Sir,

Over a year ago, I purchased 2 RM-80's, a coincidence box decoder, plus software. I use my muon detector every day with an old 486 Dell that has run almost continuously since January 12, 2001.

My daily corrected muon counts show very good variability, and this variability allows me to study muon counts in relation to other data I am collecting about the Sun's behavior and the Earth's magnetic field.

My question has to do with neutrons. You offer equipment for detecting neutrons. I'm wondering whether that equipment could be used to detect the small variations in the background neutron count. I live at 43.15 North and 71.89 West, with an elevation of 630 feet and a cutoff rigidity of approximately 1.5 GV. The equipment would be kept in a room with a pretty constant temperature and snow would would not be allowed to accumulate on the roof.

Please let me know what you think and what equipment you believe I will need.

Dear John,

I think you might detect only one background neutron every few hours so it would be very hard to detect a pattern. The only additional information I would have is that which is on our website regarding the neutron tube.

From another page Page 2 which might help with muon pattern probability:
As mentioned elsewhere, Professor Jim C. Yu has written a lesson using the RM-60 and software in combination with a spreadsheet wherein students plot the frequency distribution of background radiation. This generates the classic bell shaped curve. Also calculated: Mean and standard deviation.
To view gif images of lesson generated by a scanner:

  • Click for Prof. Jim C. Yu's Lesson

    Example 3D Example 3D

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