Trending

Map Hidden Structures With a $100 DIY Muon Tomographer

In the mid -sixties of the last century, the Nobel Prize -winning physicist Louis Alvarez had a ground idea. Suggest MononPlating particles very offspring when Cosmic Attach the Earth’s atmosphere, to search for hidden rooms inside one of Pyramids From Jiza.

These MUON particles are cousins ​​of heavy weight from Electrons Traveling is near light speed. They can penetrate many meters of solid rocks, including limestone blocks and granite used to build the pyramids. However, some Mayon will be absorbed by this dense substance, which means that it can be used for “X -ray” mainly a pyramid, which reveals its internal structure. So in 1968, Alvarez and his colleagues began conducting Moon measurements from a room at the base of the Kharam pyramid.

They did not find a hidden room, but they confirmed the feasibility of what was called Country imaging. Since then, physicists have used this technique to discover it Hidden arrival shafts over the tunnelsand Study the rooms of magma within the volcanoAnd even Investigation of damaged reactors in Fukushima. In 2017, finally MUON measurements It revealed a hidden room in one of the Pyramids of GizaIt is not just the pyramid chosen by Alvarez to explore.

You can also do similar experiences with equipment that you can build yourself for only $ 100 or so.

While some well -documented designs are available for low -cost MUON detectors (in particular,, Cosmic clock Project Massachusetts Institute of TechnologyI decided to follow the simplest and simpler prize. I bought two GEIGER-COUUNTER groupsEvery cost only $ 23. Although it is called a “group”, this painting actually comes entirely combined with the main ingredient: Geiger-Mller (or General Motors) Tube to detect ionization radiation. It also comes with no documents.

The lack of documents was not formed as soon as they were found Good source for information about this council– Including an indicator Valuable instructions How to adjust the anode voltage from the tube.

The MUON MUON Tube is used GEIGER-MüLLER [top]It was entered in a sensor board [bottom right]. Both councils are connected to Erdino Nano controller [bottom left].James Provest

For GM Pipes, I decided to buy what I understood to be good: Russian made it SBM-20 tubes. Many of these are inserted EBay website By sellers in UkraineBut I was able to obtain a pair of these tubes from a resource in US only $ 49.

“Why are two groups and a pipe?” You may ask. This is because the GM tubes do not interact with MUONS only. Most of the time, they are operated by iced molecules that radioactive materials prevent in the environment, such as daughter products from radon In the air.

Proof that the results reflect the cosmic Monon Monoon flow was not difficult.

To distinguish Monon, high -energy cosmic rays from other molecules, not difficult, though. Just apply what physicists call Chance: Discover only when two domers are operated in practice simultaneously, which means that one particle has been wrapped through both tubes. Pipes are separated in my device 25 millimeters of breaksWhich makes it unlikely that the particle coming from radioactive decay is active enough to pass both tubes. I was less likely by placing a layer of Lead is made of fishing Between the tubes.

To convert the pair that is stressed from GM meters into a coincidence, you have connected to the output of each plate (a strangely named VIN, which usually means a pin to enter the voltage supply!) Erdino NanoProgramming to score only when one of the plate records a number of 1 millimeters from the other. Of course, this means that the detector can only recognize the colon with almost almost aligned paths with the level of GM tubes so that the colon passes through both tubes.

A planning drawing that shows the outline of the two cabbage separated with a thin layer of lead. The red lines pass through both tubes and lead, while the green lines stop inside one of the tubes or inside the bullets. The graph below shows a red line after a curve of 1.1 monk per minute at an angle of zenith from 0 to 0 zero census per minute at an angle of 90 degrees. Black measurement bars follow the red line closely, with the exception of 90 degrees where the MUON flow appears from 0.1 charges per minute higher than scratch. Geiger-MLLER tubes are activated by ionizing radiation, but unlike the cosmic Muons [red particles]Most of the ground sources [green particles] It is not strong enough to travel through two tubes for the detector. By registering activations that occur only at about one time, we can draw a MUON flow as a function of an angle from the vertical to the detector, with the data observed after the expected form closelyJames Provest

Myself proved that the results have already reflected the flow of Monon, cosmic rays, it was not difficult: I just measured the counting rate as a function of the extent of the vertical detector directed. As you can see, the Monon flowing from the heavenly rays from the sky is greater than the flow of the color that travels horizontally. Between these extreme letters, the flow must be dependent on the perfection pocket on the corner where the detector plane rotates from vertical to horizontal.

Therefore, I started calculating the events with my device directed at different angles of the vertical, allowing at least 12 hours per measurement. The results were largely consistent with the expected contrast in the pocket of Al -Tamam. For example, when the horizontal is completely, the detector recorded a value of less than 10 percent of the one that was obtained when it is vertical, but it was not zero.

Getting a non -zero number even when the horizontal is not very surprising. By only 2.5 centimeters separation between 1 cm diameter tubes, the resolution of my corner detector is very wide (± 22 degrees). So even when I set the unit to feel the horizontal flow, it was sure to discover the coming colon from 22 degrees above the horizon.

With a Moon detector working on hand, it started to investigate the ground – or at least a small part of it – by visiting Red gold mineIn Midland, North Carolina, the first golden mine in the United States. I spent about two and a half hours in the mine, and made five measurements for 30 minutes. I have easily discovered the thick layer of rocks over the main horizontal tunnel of the mine. My detector was able to feel the presence of a vertical spear in one spot, as the absence of rocks allowed more colon to reach me more than I measured near the tunnel.

These measurements take a long time because you need to assemble enough to provide a reasonable statistical accuracy. So you will need patience. But it is not a bad way to harness the power of the universe, even under the deep ground!

Related Articles

Leave a Reply

Your email address will not be published. Required fields are marked *

Back to top button