Aware Coincidence Box

Aware Coincidence Box Decoder (C-Box): $85

Aware Triple Coincidence Box Decoder (Triple C-Box) $129
(For use with three RMs to plot Electromagnetic cascades in lead for generation of Rossi Curve. See below)

For a complete turn-key coincidence system, one C-Box plus:

Two RM-60s, RM-70s, RM-80s, RM-G90s or RM-G90-3 (see below) or any combination of RMs:
Price List

To interface C-Box to a USB port:
LCD-90 Pro

Note both the USB-MSP and the LCD-90 Pro can be controlled by standard ASCII characters and their output recorded with free Windows terminal programs, for example, Tera Term, Putty or Windows Hyper Terminal. On an Apple MAC one can use the built-in Screen command.

For a more complete, sophisticated, feature rich interface using the USB-MSP, LCD-90 Pro or a standard RS-232 serial port:
Aw-Radw Windows Program

Phone or write to order or for more details. AWARE ELECTRONICS CORP.
P.O. Box 4299 Wilmington DE 19807 USA
Email: (
Phone Orders \ Questions: 800-729-5397 or Phone \ Fax: 302-655-3800 Country of Origin for all Aware Electronic Corp. Products: USA

Cosmic Ray Air Shower Lateral Coincidences, Gordon McIntosh, University of Minnesota, Morris

To investigate the air showers we have been measuring the lateral coincidences among three Aware RM60 Geiger counters located at 0 cm, 15 cm, and 40 cm. Most of these measurements have been carried out at the surface. The rate of lateral, triple coincidences of Geiger counter with this configuration is 0.053 ±0.013 hr-1 at the surface.

On 4 April 2015 the UMM Modern Physics class made a balloon launch that included a measurement the lateral, triple coincidence versus altitude. Three triple coincidences were measured during the 1.75 hour flight. The rate of triple coincidences was 1.7±1.0 hr-1 . This rate is ~30 times the rate measured at the surface and indicates that showers of sufficient lateral extension to produce triple coincidences occur at a greater rate at higher altitudes.
Cosmic Ray Air Shower Lateral Coincidences

Two RM-60s and a C-Box:

Two RM-60s and a C-Box

Two RM-60s and a C-Box

For information about the Muon Project and online sites see:
Muon Project

We also construct custom made radiation monitors, for example the RM-G90-3 with three RM-G90 type tubes. These have a gamma sensitivity of 28,800 cpm/mR/hr, Cs137 gamma, and operate the same as all our RMs, i.e. directly connected to a serial port, our USB-MSP and/or our LCD-90.

When two RM-G90-3 devices are connected to our Coincidence Box and placed directly on top of each other, they provide a Cosmic Ray count rate of ~140 Counts per Minute.

Click on photos to enlarge:
RM-G90-3 Scan

QuarkNetter Reports: The Geiger Detector

Two RM-60s and a C-Box

The Chinese University of Hong Kong. Muons in Cosmic Rays:
Special Experimental Projects

Two RM-60s, C-Box and Lead Brick

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.:
Bruno Rossi

Bruno Rossi's "Cosmic Ray Telescope":
Cosmic Ray Telescope

A Quantum Entanglement Experiment. Demonstrate Spooky Action at a Distance using two of Aware’s RM-60s or RM-80s, and one of Aware’s Coincidence Box (C-Box)

  • How to Build Your Own Quantum Entanglement Experiment, Part 1
  • How to Build Your Own Quantum Entanglement Experiment, Part 2


    Art and Muons. Aware's equipment used in Paris art exhibit NOX-MATTER:
    NOX-MATTER A study for Muons and Silence
    Another link about NOX-MATTER Study for Muons and Silence

    Aware's C-Boxes each paired with two RM-60s utilized in NOX-MATTER:

    An artist wiring NOX-MATTER:

    E-mail questions received:

    > I have 2 of your RM-80 units, and was curious about the Coincidence Box Decoder.
    > 1) Does the Coincidence Box power both units from the serial port(s), or does it require a battery?
    Both units and the Coincidence Box are powered from one serial port no problem.

    > 2) Does it require 2 serial ports?
    Only one serial port is needed for the coincidence counts. If you want also to gather rad data from the two RM units at the same time, an extra serial port per RM is needed, for a total of three, that is, one serial port for the coincidence counts and one serial port for each RM. In this case, the telephone cable from each RM is split into two lines with a telephone line splitter ($1.00). One of the lines from each RM goes to the coincidence box, and the other line goes to one of the serial ports.

    > 3) Do 3 separate graphs result (one from each unit and a coincidence one?
    Yes, with the above setup. Otherwise, with one serial port, just coincidence counts are plotted.

    > 4) Could a fan-filter be put on one and still have it record the coincidence counts?
    Coincidence counts result when an ionizing particle passes through both tubes. The closer the tubes, the more likely a muon will pass through both. You could place one RM-80 with fan-filter on top of the second RM-80 such that a good percentage of the muons passing through the RM-80 with fan-filter will also pass through the other RM-80, if both windows are oriented horizontally, since the majority of muons pass vertically from the sky down.

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