Can high school students build their own cosmic ray detector?

  • Context: High School 
  • Thread starter Thread starter That one guy
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Discussion Overview

The discussion centers around the feasibility of high school students building their own cosmic ray detectors, exploring various methods and challenges associated with such projects. Participants share ideas about constructing devices like cloud chambers, Geiger counters, and spark chambers, while considering the complexity and safety involved in these builds.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses interest in building a cosmic ray detector, inspired by Michio Kaku's experiences with cloud chambers and particle accelerators.
  • Another participant suggests that building a do-it-yourself cloud chamber is relatively easy, involving a bulb filled with alcohol vapor, but notes that detecting cosmic rays is challenging due to their low flux at Earth level.
  • A participant mentions wanting to create a more challenging project with the help of friends.
  • It is noted that constructing a betatron is complex and requires significant experience with electronics and vacuum systems.
  • One participant recommends starting with Geiger counters and possibly using them to trigger a spark chamber to observe cosmic muons, sharing a personal anecdote about their son's successful build of a spark chamber.

Areas of Agreement / Disagreement

Participants generally agree that building a cloud chamber is feasible for high school students, but there is disagreement regarding the complexity of other devices like betatrons and the challenges of detecting cosmic rays.

Contextual Notes

Participants mention varying levels of experience with electronics and safety considerations, indicating that the success of these projects may depend on individual skill levels and available resources.

Who May Find This Useful

This discussion may be useful for high school students interested in physics and DIY projects, educators looking for engaging experiments, and hobbyists exploring particle detection methods.

That one guy
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I'm new by the way, but I have just started reading "Physics of the Future" by Michio Kaku and found when he was in high school he built a cloud chamber (I assume a cosmic ray cloud chamber) and a betatron particle accelerator, I looked into it and found them both a bit simple, so i want to make something fun like that but somewhat of a challenge to complete.

P.S. I'm still a student in high school myself so please not too outrageous material wise
 
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You may build a do-it-yourself cloud chamber pretty easy. Just a bulb filled with vapour of e.g. alcohol, which turns to mist as decompressed using a quickly pulled syringe.

But cosmic rays are not that easy to detect: the flux at Earth level is about 1 per minute per cm^2, so you may spot one per hundred or so trials.

If you have something radioactive (e.g. old-fashioned watch with glowing arms) - it could help a lot...
 
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I meant I looked into it and I wanted to make something a bit more challenging, partially because i have friends who will help.
 
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Betatron is not that simple to build - it is possible to build it at home, but it require some experience with electronics, vacuum, etc.

If you have some basic experience in electronics and high voltage (don't kill yourself!) you may try to build gas chambers: either drift chamber (a bit more difficult) or spark chamber or (easiest) Geiger's counter.
You may want to build a pair of Geiger's counters first, and then use them as a trigger for spark chamber - and observe cosmic muons that way.

My son built a spark chamber when he was 17 - it took a month for him and his friend, but they did it finally, at expenses not much exceeding 100€ (well, they already had most of the electronic stuff needed).
 

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