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$$\pi^+ -> \mu^+ + \nu_{\mu}$$ $$\pi^- -> \mu^- + \nu_{\mu}$$

$$\pi^+ \rightarrow \mu^+ + \nu_{\mu}$$ $$\pi^- \rightarrow \mu^- + \nu_{\mu}$$

The charged particles can be removed easily by surrounding the beam with a magnetic field. The charged particles will deflect in a curved path and hence can be separated. Neutrinos being uncharged are not affected by the magnetic field. The heavy particles can also be removed easily by using a thick steal-cement slab. Nuetrinos feebly interact with matter and hence will easily make its way through the slab. Ultimately, you will be left with a beam consisting of neutrinos in majority.

One of the detector which is capable of detecting neutrinos today is the Super Kamiokande Neutrino Observatory. The detector is nearly a kilometer below the surface (so that particles which interact with matter get enough chance to do so). The test chamber is made up of steel and is in the shape of a cylinder. An array of super sensitive light detectors (photomultipliers) surround the sides of the test chamber. At the bottom of the test chamber, there are nearly 50,000 tons of water.

Detecting neutrinos is very difficult and requires big detectors. It isn't practical as of now to use neutrinos as a fast medium of communication. Of course, most of the neutrinos pass through the earth without interacting but it isn't a practically feasible method of communication as of today. Maybe some day in the future, we might actually build a working neutrino powered communication system.

The charged particles can be removed easily by surrounding the beam with a magnetic field. The charged particles will deflect in a curved path and hence can be separated. Neutrinos being uncharged are not affected by the magnetic field. The heavy particles can also be removed easily by using a thick steal-cement slab. Neutrinos feebly interact with matter and hence will easily make its way through the slab. Ultimately, you will be left with a beam consisting of neutrinos in majority.

One of the detectors which is capable of detecting neutrinos today is the Super Kamiokande Neutrino Observatory. The detector is nearly a kilometer below the surface (so that particles which interact with matter get enough chance to do so). The test chamber is made up of steel and is in the shape of a cylinder. An array of super sensitive light detectors (photomultipliers) surround the sides of the test chamber. At the bottom of the test chamber, there are nearly 50,000 tons of water.

Detecting neutrinos is very difficult and require big detectors. It isn't practical as of now to use neutrinos as a fast medium of communication. Of course, most of the neutrinos pass through the earth without interacting but it isn't a practically feasible method of communication as of today. Maybe some day in the future, we might actually build a working neutrino powered communication system.

The cosmic rays consist of all sorts of particles ranging from heavy protons to little to no mass neutrinos. There are trillions of trillions of neutrinos passing through the earth at any given time. While the proton, neutrons and other 'very social' particles get trapped by the many layers of the crust, these hermit neutrinos can stream through the matter unaffected (as a matter of fact, many light years of steel across). Neutrinos are extremely light and feebly interact with the matter. We humans have already built detectors capable of detecting neutrinos despite the fact that the neutrinos are not social beings. Apart from catching the stray neutrinos in the cosmic rays, we have managed to detect neutrinos produced by smashing particles in accelerators.

Producing neutrinos is relatively easier than detecting neutrinos. Smashing protons against a target will produce many new particles. This is a very diverse beam of particles consisting of heavy and light, charged and uncharged (neutrons, protons, electrons, pions, neutrinos and what not). Some of these particles such as protons are unwanted particles which must be separated while some particles are useful such as pions which decay to muons and electrons producing neutrinos as side products.

The cosmic rays consist of all sorts of particles ranging from heavy protons to little to no mass neutrinos. There are trillions of trillions of neutrinos passing through the earth at any given time. While the proton, neutrons and other 'very social' particles get trapped by the many layers of the crust, these hermit neutrinos can stream through the matter unaffected (as a matter of fact, many light years of steel across). Neutrinos are extremely light and feebly interact with matter. We humans have already built detectors capable of detecting neutrinos despite the fact that the neutrinos are not social beings. Apart from catching the stray neutrinos in the cosmic rays, we have managed to detect neutrinos produced by smashing particles in accelerators.

Producing neutrinos is relatively easier than detecting neutrinos. Smashing protons against a target will produce a beam of new particles. This is a very diverse beam of particles consisting of heavy and light, charged and uncharged (neutrons, protons, electrons, pions, neutrinos and what not). Some of these particles such as protons are unwanted particles which must be separated while some particles are useful such as pions which decay into muons and electrons producing neutrinos as side products.