I'm currently in the process of building a new detector using PMTs and
Scintillators http://www.hardhack.org.au/scintillator_detector for testing the
validity of my other cheaper detector models that I am also working on.

But I was also thinking of building another for logging the average Cosmic Ray
levels over an extended period. As I'm also involved in an Amateur Radio
Astronomy Group http://www.radio-assa.org.au/.

I thought it would be interesting to see if there is any trend between cosmic
ray showers and radio noise levels or other radio correlation.

My question -  is it was absolutely necessary to use two detectors in a
coincidence detection arrangement particularly monitored on a data logger over
time. As a PMT can measure the energy of each strike I assume it would be
possible to filter out terrestrial radiation, as they would a have lower energy,
particularly with lead shielding around the scintillator. Where a muon would
pass through easily and have a higher energy.

Thoughts welcome

Regards

Robert

Nice to see the list is back.  I've been making a few variation of Geiger Muller
array detector here is one http://www.hardhack.org.au/geiger_muller_detector I'm
yet to post the ten tube version :-)

I'm also building another unit with PMTs I have the tubes and electronics. But
need some scintillation panels anyone know where I can purchase this from at a
realistic DIY ers cost, don't mind overseas shipping costs.

Robert

Breeder reactors do not create matter from nothing and do not violate any
conservation laws. They merely transmute the non-fissionable uranium-238
isotope, which is 99.3% of natural uranium as it comes out of the ground, into
fissionable plutonium-239. By doing so, they increase the supply of fissionable
material and thus create more nuclear fuel than they consume. But they do not
create this fuel from nothing.

The general lack of interest in nuclear power in the United States over the past
30 years along with the low price of uranium has made breeder reactors largely
uneconomical in the USA, although in France they have been developed to a much
higher degree. In most designs the spent fuel rods must be chemically
reprocessed to recover the Pu-239 for reuse, and the USA has chosen to forgo
spent fuel reprocessing and intends to simply bury the spent fuel rods assuming
that the political problems associated with disposal site selection can ever be
resolved. Use of breeder reactors in the USA would require a major shift in this
policy toward fuel reprocessing.

Fermi's Chicago Pile 1 which achieved the first chain reaction on December 2,
1942 was not a breeder, nor were the wartime plutonium production reactors in
Hanford, Washington, but the first use of nuclear power to generate electricity
in December 1951 was indeed an experimental breeder reactor at the site now
known as the Idaho National Engineering Laboratory.

Dan Schultz

--- In particledetector@yahoogroups.com, "boxa588" <boxa888@...> wrote:
>
> the first nuclear reactor was not the same as what they are using today. no,
this reactor was called a breed reactor. it was such an important discovery in
energy production. this reactor uses a uranium and plutionium tuned just right
that they produce more matter than they are using to create the matter. in some
online sites, theres a sort of resonance created in this system to make a breed
reactor unique over regular reactors. the uranium changes into plutonium giving
off energy and in the process becomes a form of continous cycle, giving
sometimes 2 times as much matter(fuel) than what was used to create it which of
course would seem to violate conservation of energy/matter, but this happens,
this was proven 60 yrs ago!
>
> heres the link, this was done in idaho by the department of energy so this was
the real thing when it comes to a infinite supply of energy to be given to
humanity.
>
> http://www.youtube.com/watch?v=7hLp9s88P5I
>
> thanks guys this discovery even though its old is so important to having a
society where energy in plentiful and will last us til the end of time!
>
> boxa
>

Hi all,

first of all, I'm very sorry about the long absence!
There were some complicated issues I had to deal with.
But now things are getting better.

When I had some scarce spare time, I was working on
RF stuff, mainly designing a radio receiver without
any coils and that unreliable adjustable capacitors.

NOW, I'm starting new experiments!
But that will take some time and don't await any
preliminary results before 2010.

Thanks, sorry, and all the best to you,
Captain.

the first nuclear reactor was not the same as what they are using today. no,
this reactor was called a breed reactor. it was such an important discovery in
energy production. this reactor uses a uranium and plutionium tuned just right
that they produce more matter than they are using to create the matter. in some
online sites, theres a sort of resonance created in this system to make a breed
reactor unique over regular reactors. the uranium changes into plutonium giving
off energy and in the process becomes a form of continous cycle, giving
sometimes 2 times as much matter(fuel) than what was used to create it which of
course would seem to violate conservation of energy/matter, but this happens,
this was proven 60 yrs ago!

heres the link, this was done in idaho by the department of energy so this was
the real thing when it comes to a infinite supply of energy to be given to
humanity.

http://www.youtube.com/watch?v=7hLp9s88P5I

thanks guys this discovery even though its old is so important to having a
society where energy in plentiful and will last us til the end of time!

boxa

Progress is continuing, all be it slowly, as I have been experiencing issues
with stability using fluorescent tubes. There are many variable between
different manufactures and sizes, often difficult to recreate the same effect
from one day to the next with the same test set.

Currently I'm experimenting with a regulated high frequency(Mhz) chopped HV
supply to improve the capacitive coupling between the outside of the tube and
gas.

I have also been testing different circuit ideas for the coincidence using
Geiger–Müller Tubes as a test platform.

http://www.hardhack.org.au/geiger_muller_detector

Although not ground breaking stuff, its been a very educative and a fun process.

Robert

I've just bought 10x very cheap Geiger tubes from Russia (all tested ok) and was
going to construct a muon detector in a similar configuration to my planned
fluorescent tube prototype I'm currently experimenting with.  The aim is to have
two pannels of 5 tubes laid in parallel which are space apart. The aim being is
to have something more concrete to compare with.

I was then curious to know what would be a geiger tubes aperture size in respect
to detecting a muon flying though it?

Would just be just the length of the Anode wire and say a millimeter each side?

Or the full diameter and length of the gas envelope of the cathode?

I'm assuming it might be a the first, as is seems a drift detector is
essentially geiger tube constructed with multiple anode wires for this reason.

Regards

Robert Hart.
http://www.hardhack.org.au

I've posted a few new files in the Rodney_Howe folder: 090222 and 090220 where
there seems to be an increase in the average muon count during the early morning
hours.  Compare these days to a month or so ago: 090124 and 090202.

These are daily scans begining at 00:UT with a data capture rate of 2 second
intervals.  The signal is integrated over 10s of seconds.  The signal is
filtered.

Has anyone noticed an increase in the average muon in the early morning and
during the day these last few weeks?


Rodney

Robert,
Americanium 241 is a strong alpha emitter and a weak gamma emitter. The glass in
your tubes will block the alphas.  Most Geiger counters have tube with an alpha
window. Its likely the Geiger counter could read both the alpha and the gamma
radiation where your tubes could only read the gammas.
Ron Fleshman
 


--- On Thu, 3/5/09, robertatairstream <robert@...> wrote:











             That is excellent feedback Hannes, as I was very disappointed that I
didn't get the same level reaction in the tube detector as I did with a Geiger
counter. As the increase is only just noticeable.



Cheers



Robert






























[Non-text portions of this message have been removed]

That is excellent feedback Hannes, as I was very disappointed that I didn't get
the same level reaction in the tube detector as I did with a Geiger counter. As
the increase is only just noticeable.

Cheers

Robert

>
> robertatairstream wrote:
> > 5) Holding the alpha particle source close increases these pulses and
turning it away decreases.
>
> this sounds a little strange to me, since alphas won't go
> thru the glass of the tube. Most likely your source also
> produces a good amount of gammas and that is what you see.
>
> Cheers,
> Hannes.
>

G'day Robert,

robertatairstream wrote:
> 5) Holding the alpha particle source close increases these pulses and turning
it away decreases.

this sounds a little strange to me, since alphas won't go
thru the glass of the tube. Most likely your source also
produces a good amount of gammas and that is what you see.

Cheers,
Hannes.
--
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+
| Captain's Universe   http://www.captain.at           |
| Muon      Detector   http://www.cosmicrays.org       |
| Artemia   Homepage   http://www.captain.at/artemia/  |
| Fairy Shrimps http://www.captain.at/fairy-shrimp.php |
| JupiterRadio Astro   http://www.jupiterradio.com     |
| Earth Magnetometer   http://www.magnetometer.org     |
| Mars Base dot  Net   http://www.marsbase.net         |
| Bryophyllum Plants   http://www.bryophyllum.com      |
| Fossils in Austria   http://www.fossils.captain.at   |
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+

I went out on the weekend and bought a smoke detector for only $7AU which has a
nice little alloy disk with americium 241 (according the package).  It seems to
emit quite a nice stream of particles from one side using my geiger counter.

I have begun testing this source on a single element Fluorescent test rig I've
set up, the results have been both promising and frustrating, which I'm
currently writing up.

But in summary

1) I've simplified fluorescent tube detector into a simple single tube system
for testing against a radioactive source.

2) Completed a number of tests to illuminated both RFI noise and noise generated
in the electronics and Oscilloscope I've been using to measure the output.

4) The detector produces random pulses unlinked to anything I can isolate.

5) Holding the alpha particle source close increases these pulses and turning it
away decreases.

The frustrating thing is the degree of change is far from what I would expect,
as my Geiger Counter has a marked difference compared with the fluorescent tube
detector.  This maybe the large surface area of the detector or something else
generated within the tube.

But then again the aim of this project is cheap and easy, and the sensitivity
not matter when linked in coincidence circuit and filtered and spaced to only
pluck out high energy particles.

I'm currently looking a different tube manufactures and wattage, I will also
break one open to see if the filaments are doped with something to help excite
ionization.  As I have read that Neon Lamps often use a tiny bit of thorium, and
this maybe what is causing the high background noise.

Feedback, ideas, assumptions always very welcome.

Regards

Robert

The answer is yes.
I arranged a visit for my college physics group.  However we had to cancel due
to unforseen circumstances.  Educational visits are allowed so get a like minded
group together and visit their web site an book a day tour.

Regards
Michael

To: particledetector@yahoogroups.com
From: n8fgv@...
Date: Fri, 27 Feb 2009 20:24:24 +0000
Subject: [particledetector] Re: Latest from the LHC





















             Is there any way to visit the LHC underground areas? Or is it all

sealed up and off limits to outsiders? I've been to the Microcosm

museum but would like to find a way to visit one of the detectors in

its underground cavern.



Dan Schultz



--- In particledetector@yahoogroups.com, "Ing. Hannes Mayer"

<captain@...> wrote:

>

>

>

http://cdsweb.cern.ch/journal/popup?name=CERNBulletin&type=breaking_news&record=\
1164167&ln=en

>

> Cheers,

> Hannes.



>






















_________________________________________________________________
All your Twitter and other social updates in one place
http://clk.atdmt.com/UKM/go/137984870/direct/01/

[Non-text portions of this message have been removed]

Yes, all posts arrive by email.

Jack3




--- In particledetector@yahoogroups.com, "Ing. Hannes Mayer"
<captain@...> wrote:
>
> Do you all get my posts delivered by email ?
>
> Thanks,
> Hannes.

At 08.11 28/02/2009, you wrote:
>Do you all get my posts delivered by email ?

Loud and clear, Hannes.

Marco

Seems fine for me.



Clay



-----Original Message-----
From: particledetector@yahoogroups.com
[mailto:particledetector@yahoogroups.com] On Behalf Of Ing. Hannes Mayer
Sent: Saturday, February 28, 2009 12:11 AM
To: particledetector@yahoogroups.com
Subject: [particledetector] Moderator test



Do you all get my posts delivered by email ?

Thanks,
Hannes.
--
___



[Non-text portions of this message have been removed]

Ing. Hannes Mayer wrote:
> Do you all get my posts delivered by email ?
>
> Thanks,
> Hannes.

Sorry for the noise ... provider issue on my side

Sorry again.

Cheers,
Hannes.
--
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+
| Captain's Universe   http://www.captain.at           |
| Muon      Detector   http://www.cosmicrays.org       |
| Artemia   Homepage   http://www.captain.at/artemia/  |
| Fairy Shrimps http://www.captain.at/fairy-shrimp.php |
| JupiterRadio Astro   http://www.jupiterradio.com     |
| Earth Magnetometer   http://www.magnetometer.org     |
| Mars Base dot  Net   http://www.marsbase.net         |
| Bryophyllum Plants   http://www.bryophyllum.com      |
| Fossils in Austria   http://www.fossils.captain.at   |
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+

Do you all get my posts delivered by email ?

Thanks,
Hannes.
--
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+
| Captain's Universe   http://www.captain.at           |
| Muon      Detector   http://www.cosmicrays.org       |
| Artemia   Homepage   http://www.captain.at/artemia/  |
| Fairy Shrimps http://www.captain.at/fairy-shrimp.php |
| JupiterRadio Astro   http://www.jupiterradio.com     |
| Earth Magnetometer   http://www.magnetometer.org     |
| Mars Base dot  Net   http://www.marsbase.net         |
| Bryophyllum Plants   http://www.bryophyllum.com      |
| Fossils in Austria   http://www.fossils.captain.at   |
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+

for some reason my posts are not delivered (at least to me)
so here is a forward

-------- Original Message --------
Subject: Latest from the LHC
Date: Fri, 27 Feb 2009 18:02:41 +0100
From: Ing. Hannes Mayer <captain@...>
To: particledetector@yahoogroups.com


http://cdsweb.cern.ch/journal/popup?name=CERNBulletin&type=breaking_news&record=\
1164167&ln=en

Cheers,
Hannes.
--
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+
| Captain's Universe   http://www.captain.at           |
| Muon      Detector   http://www.cosmicrays.org       |
| Artemia   Homepage   http://www.captain.at/artemia/  |
| Fairy Shrimps http://www.captain.at/fairy-shrimp.php |
| JupiterRadio Astro   http://www.jupiterradio.com     |
| Earth Magnetometer   http://www.magnetometer.org     |
| Mars Base dot  Net   http://www.marsbase.net         |
| Bryophyllum Plants   http://www.bryophyllum.com      |
| Fossils in Austria   http://www.fossils.captain.at   |
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+

n8fgv wrote:
> Is there any way to visit the LHC underground areas? Or is it all

If you have the right connections ;-)
I will probably have the chance to go down this year, but so far
all is open....

Cheers,
Hanness.

> sealed up and off limits to outsiders? I've been to the Microcosm
> museum but would like to find a way to visit one of the detectors in
> its underground cavern.
>
> Dan Schultz
>
>
> --- In particledetector@yahoogroups.com, "Ing. Hannes Mayer"
> <captain@...> wrote:
>>
>>
>
http://cdsweb.cern.ch/journal/popup?name=CERNBulletin&type=breaking_news&record=\
1164167&ln=en
>> Cheers,
>> Hannes.
>
>
>
>
>
> ------------------------------------
>
> Visit the Groups-Homepage at:
> http://www.cosmicrays.org/
> --Yahoo! Groups Links
>
>
>
>


--
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+
| Captain's Universe   http://www.captain.at           |
| Muon      Detector   http://www.cosmicrays.org       |
| Artemia   Homepage   http://www.captain.at/artemia/  |
| Fairy Shrimps http://www.captain.at/fairy-shrimp.php |
| JupiterRadio Astro   http://www.jupiterradio.com     |
| Earth Magnetometer   http://www.magnetometer.org     |
| Mars Base dot  Net   http://www.marsbase.net         |
| Bryophyllum Plants   http://www.bryophyllum.com      |
| Fossils in Austria   http://www.fossils.captain.at   |
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+

Take your geiger counter to flea markets, yard sales or thrift stores,
look for an older alarm clock with a radium dial. My dad's old alarm
clock provides a very nice radioactive test source.

Dan Schultz

Is there any way to visit the LHC underground areas? Or is it all
sealed up and off limits to outsiders? I've been to the Microcosm
museum but would like to find a way to visit one of the detectors in
its underground cavern.

Dan Schultz


--- In particledetector@yahoogroups.com, "Ing. Hannes Mayer"
<captain@...> wrote:
>
>
>
http://cdsweb.cern.ch/journal/popup?name=CERNBulletin&type=breaking_news&record=\
1164167&ln=en
>
> Cheers,
> Hannes.

>

http://cdsweb.cern.ch/journal/popup?name=CERNBulletin&type=breaking_news&record=\
1164167&ln=en

Cheers,
Hannes.
--
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+
| Captain's Universe   http://www.captain.at           |
| Muon      Detector   http://www.cosmicrays.org       |
| Artemia   Homepage   http://www.captain.at/artemia/  |
| Fairy Shrimps http://www.captain.at/fairy-shrimp.php |
| JupiterRadio Astro   http://www.jupiterradio.com     |
| Earth Magnetometer   http://www.magnetometer.org     |
| Mars Base dot  Net   http://www.marsbase.net         |
| Bryophyllum Plants   http://www.bryophyllum.com      |
| Fossils in Austria   http://www.fossils.captain.at   |
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+

Thanks Noel,

I have no problem hacking apart a smoke detector, don't know why I
don't just pop down to the store a get a few :-P in the first place,
I'll get one this weekend and see how it works.

I've just ordered a lump of Zircon which is meant to be mildly
radioactive and is arriving soon.

Looks like I also need a better Geiger counter as I need a more
reliable measurement.

Robert

-- In particledetector@yahoogroups.com, Noel Verbiest <nverbiest@...>
wrote:
>
> You may want to "sacrifice" a regular cheap home-use smoke detector.
> Many smoke detectors use a small ion chamber as the smoke detecting
> element.

You may want to "sacrifice" a regular cheap home-use smoke detector.
Many smoke detectors use a small ion chamber as the smoke detecting
element.
Inside the chamber, there is a button-like contraption which is coated
with a minute amount of Americium 241, a prodigious alpha source with
a decent half-life.
Typically in the 800 to 1000 nanoCuries range.
This will register loud and clear on a functioning Geiger Muller
detector.
Other (unexpected) sources: certain granites (such as the ones used on
kitchen counter tops) from Brazilian and/or Namibian origin tend to be
surprisingly "active".
Something to be said for the proverbial "glow-in-the-dark" kitchen
counter tops...

Noel Verbiest

Hi Robert



You might try taking your Geiger counter to a hardware store and asking to
check out the gas lamp mantles.  Not so many years ago the mantles were made
with a radioactive substance (I think it was Thorium).  In the UK it is
still fairly easy to find an old, odd-sized radio-active mantle in the box.



John Murray

Bristol, UK



From: particledetector@yahoogroups.com
[mailto:particledetector@yahoogroups.com] On Behalf Of robertatairstream
Sent: 08 February 2009 05:25
To: particledetector@yahoogroups.com
Subject: Re: [particledetector] Cosmic Ray Detector using fluorescent tubes



Hi Guys,

I have been at work, with the suggestions offered thank you.

http://www.hardhack.org.au/radioactive
http://www.hardhack.org.au/xrays

I now have a couple of Geiger counters but unfortunately, I haven't
yet been able to source a radioactive sample to use in a test, as
there seems some legal restrictions in Australia that prevent amateur
experimenter owning such samples, nor putting them through the post
even with a weak level of radiation. Any Australians on the list know
where, please let me know.

I have even visited numerous antique stores with my Geiger Counter
looking for uranium based ceramics or glass without success, well
nothing that is good enough for testing. But I have had many strange
looks and questions when I pull out my pocket Geiger Counter.

My next step is to build a low-level x-ray source using a Vacuum Tube
and high voltage ~45KV. Although slightly more dangerous an xray
source that can be switched on and off at the flick of a switch would
be a very useful way of testing the detector, also its been an
interest tangent.

Robert
**
Ing. Hannes Mayer wrote:
Any opinions from other members so far ?
>
>
> Cari saluti,
> Capitano.
>
> On Tue, 02 Dec 2008 20:01:55 +0100, <captain@...
<mailto:captain%40captain.at>
<mailto:captain%40captain.at>> wrote:
> >
> > Hi Robert,
> >
> > cosmicrays.org and list owner here, Hannes/Captain.
> >
> > Well, about the experiment:
> > 1) As I wrote on the webpage, this is a highly uncertain
> > experiment. Depends on many factors - I even contacted
> > Dr. Schmeling who did the experiment in 2000 at CERN
> > and he said is was interesting, but not at all a
> > reliable detector.
> > 2) your detector(s) seem to me a little odd on the first
> > sight. I have to make a closer look when I have more
> > time in Jan. or Feb. or so. Sorry for that time delay
> > but as you can imagine, my girlfriend is "a little"
> > more important than this stuff ;-)
> > 3) I have the original pages of Dr. Schmeling I can zip
> > and post on my page later this month, but meanwhile
> > you can view this one:
> >
> >
>
http://teachers.web.cern.ch/teachers/archiv/hst2000/teaching/expt/sascha/sas
cha.htm
<http://teachers.web.cern.ch/teachers/archiv/hst2000/teaching/expt/sascha/sa
scha.htm>
> >
> > Best,
> > Captain of the muons :-)
> >
> > On Mon, 1 Dec 2008 17:35:01 -0800 (PST), william winkler
> > <billwink10@... <mailto:billwink10%40yahoo.com>
<mailto:billwink10%40yahoo.com>> wrote:
> >> Concerning a safe radiation source for tests, when you order a cloud
> >> chamber kit from Edmund Scientific you get a coupon that delivers
a bead
> > of
> >> lead 210 from Oak Ridge, on a needle. A good source of alpha
particles
> >> that really sets off a Geiger Counter. I can tell you, it sparks
a lot
> > of
> >> interest in high school science classes.
> >> >> Don't know what other products may be available to the public
from Oak
> >> Ridge.
> >> >> William Winkler
> >>
> >> --- On Mon, 12/1/08, fanman <fanman@...
<mailto:fanman%40lpbroadband.net>
<mailto:fanman%40lpbroadband.net>> wrote:
> >>
> >> From: fanman <fanman@... <mailto:fanman%40lpbroadband.net>
<mailto:fanman%40lpbroadband.net>>
> >> Subject: RE: [particledetector] Cosmic Ray Detector using fluorescent
> >> tubes
> >> To: particledetector@yahoogroups.com
<mailto:particledetector%40yahoogroups.com>
<mailto:particledetector%40yahoogroups.com>
> >> Date: Monday, December 1, 2008, 2:54 PM
> >>
> >>
> >>
> >>
> >>
> >>
> >> This is interesting. I normally just follow the posts here as I'm
mostly
> >> into Geiger Counters and Scintillators. I would recommend getting
> >> something
> >> mildly radioactive to verify that you are detecting high-energy
> > particles.
> >> A piece of red or orange Fiestaware, Uranium ore, old aircraft
gauge, or
> >> some such should work. Even an old alarm clock or watch with a radium
> > dial
> >> would work. Of course if you have access to a radiation counter
with a
> >> test
> >> source that would be perfect. Then you'll know if it's just corona.
> >>
> >> Looks like fun!
> >>
> >> Clay
> >>
> >> -----Original Message-----
> >> From: particledetector@ yahoogroups. com
> >> [mailto:particledetector@ yahoogroups. com] On Behalf Of Robert
Hart @
> >> Air-Stream
> >> Sent: Sunday, November 30, 2008 9:32 PM
> >> To: particledetector@ yahoogroups. com
> >> Subject: [particledetector] Cosmic Ray Detector using fluorescent
tubes
> >>
> >> Hi Everyone,
> >>
> >> I've been tinkering with a project based on a variation to the spark
> >> chamber found on the CosmicRays.org website
> >>
> >> http://www.cosmicra <http://www.cosmicra ys.org/muon- spark-chamber.
> > php>
> >> ys.org/muon- spark-chamber. php
> >>
> >> My first detector prototype is not that dissimilar to this,
except the
> >> tubes are placed between metal plates. The outer plates are connected
> >> together by bolts and connected to the Negative rail of the
supply and
> >> the centre plate is insulated by the tubes and connected to the
Positive
> >
> >> rail of the supply, making a little less lethal to the touch.
> >>
> >> Full details are here http://www.hardhack
> >> <http://www.hardhack .org.au/cosmic_ ray_detector_ 1>
> >> .org.au/cosmic_ ray_detector_ 1
> >>
> >> Anyway so far I've achieved the ability to detect "something?" as
> >> observable random pulses on a CRO, but it is difficult to confirm
they
> >> are actually due to Cosmic Rays or even Terrestrial Radiation over
> >> something else like RFI, coronal discharges,etc.
> >>
> >> Feedback would be welcome, the question is am I on the right
track or is
> >
> >> this just total fantasy?
> >>
> >> Regards
> >>
> >> Robert
> >>





[Non-text portions of this message have been removed]

Hi Guys,

I have been at work, with the suggestions offered thank you.

http://www.hardhack.org.au/radioactive
http://www.hardhack.org.au/xrays

I now have a couple of Geiger counters but unfortunately, I haven’t yet
been able to source a radioactive sample to use in a test, as there
seems some legal restrictions in Australia that prevent amateur
experimenter owning such samples, nor putting them through the post even
with a weak level of radiation. Any Australians on the list know where,
please let me know.

I have even visited numerous antique stores with my Geiger Counter
looking for uranium based ceramics or glass without success, well
nothing that is good enough for testing. But I have had many strange
looks and questions when I pull out my pocket Geiger Counter.

My next step is to build a low-level x-ray source using a Vacuum Tube
and high voltage ~45KV. Although slightly more dangerous an xray source
that can be switched on and off at the flick of a switch would be a very
useful way of testing the detector, also its been an interest tangent.

Robert
**
Ing. Hannes Mayer wrote:
Any opinions from other members so far ?
>
>
> Cari saluti,
> Capitano.
>
> On Tue, 02 Dec 2008 20:01:55 +0100, <captain@...
> <mailto:captain%40captain.at>> wrote:
> >
> > Hi Robert,
> >
> > cosmicrays.org and list owner here, Hannes/Captain.
> >
> > Well, about the experiment:
> > 1) As I wrote on the webpage, this is a highly uncertain
> > experiment. Depends on many factors - I even contacted
> > Dr. Schmeling who did the experiment in 2000 at CERN
> > and he said is was interesting, but not at all a
> > reliable detector.
> > 2) your detector(s) seem to me a little odd on the first
> > sight. I have to make a closer look when I have more
> > time in Jan. or Feb. or so. Sorry for that time delay
> > but as you can imagine, my girlfriend is "a little"
> > more important than this stuff ;-)
> > 3) I have the original pages of Dr. Schmeling I can zip
> > and post on my page later this month, but meanwhile
> > you can view this one:
> >
> >
>
http://teachers.web.cern.ch/teachers/archiv/hst2000/teaching/expt/sascha/sascha.\
htm
>
<http://teachers.web.cern.ch/teachers/archiv/hst2000/teaching/expt/sascha/sascha\
.htm>
>
> >
> > Best,
> > Captain of the muons :-)
> >
> > On Mon, 1 Dec 2008 17:35:01 -0800 (PST), william winkler
> > <billwink10@... <mailto:billwink10%40yahoo.com>> wrote:
> >> Concerning a safe radiation source for tests,  when you order a cloud
> >> chamber kit from Edmund Scientific you get a coupon that delivers a
> bead
> > of
> >> lead 210 from Oak Ridge, on a needle.  A good source of alpha
> particles
> >> that really sets off a Geiger Counter.  I can tell you, it sparks a
> lot
> > of
> >> interest in high school science classes.
> >>
> >> Don't know what other products may be available to the public from Oak
> >> Ridge.
> >>
> >> William Winkler
> >>
> >> --- On Mon, 12/1/08, fanman <fanman@...
> <mailto:fanman%40lpbroadband.net>> wrote:
> >>
> >> From: fanman <fanman@...
> <mailto:fanman%40lpbroadband.net>>
> >> Subject: RE: [particledetector] Cosmic Ray Detector using fluorescent
> >> tubes
> >> To: particledetector@yahoogroups.com
> <mailto:particledetector%40yahoogroups.com>
> >> Date: Monday, December 1, 2008, 2:54 PM
> >>
> >>
> >>
> >>
> >>
> >>
> >> This is interesting. I normally just follow the posts here as I'm
> mostly
> >> into Geiger Counters and Scintillators. I would recommend getting
> >> something
> >> mildly radioactive to verify that you are detecting high-energy
> > particles.
> >> A piece of red or orange Fiestaware, Uranium ore, old aircraft
> gauge, or
> >> some such should work. Even an old alarm clock or watch with a radium
> > dial
> >> would work. Of course if you have access to a radiation counter with a
> >> test
> >> source that would be perfect. Then you'll know if it's just corona.
> >>
> >> Looks like fun!
> >>
> >> Clay
> >>
> >> -----Original Message-----
> >> From: particledetector@ yahoogroups. com
> >> [mailto:particledetector@ yahoogroups. com] On Behalf Of Robert Hart @
> >> Air-Stream
> >> Sent: Sunday, November 30, 2008 9:32 PM
> >> To: particledetector@ yahoogroups. com
> >> Subject: [particledetector] Cosmic Ray Detector using fluorescent
> tubes
> >>
> >> Hi Everyone,
> >>
> >> I've been tinkering with a project based on a variation to the spark
> >> chamber found on the CosmicRays.org website
> >>
> >> http://www.cosmicra <http://www.cosmicra ys.org/muon- spark-chamber.
> > php>
> >> ys.org/muon- spark-chamber. php
> >>
> >> My first detector prototype is not that dissimilar to this, except the
> >> tubes are placed between metal plates. The outer plates are connected
> >> together by bolts and connected to the Negative rail of the supply and
> >> the centre plate is insulated by the tubes and connected to the
> Positive
> >
> >> rail of the supply, making a little less lethal to the touch.
> >>
> >> Full details are here http://www.hardhack
> >> <http://www.hardhack .org.au/cosmic_ ray_detector_ 1>
> >> .org.au/cosmic_ ray_detector_ 1
> >>
> >> Anyway so far I've achieved the ability to detect "something?" as
> >> observable random pulses on a CRO, but it is difficult to confirm they
> >> are actually due to Cosmic Rays or even Terrestrial Radiation over
> >> something else like RFI, coronal discharges,etc.
> >>
> >> Feedback would be welcome, the question is am I on the right track
> or is
> >
> >> this just total fantasy?
> >>
> >> Regards
> >>
> >> Robert
> >>
>



[Non-text portions of this message have been removed]

Hi Guys,

I have been at work, with the suggestions offered thank you.

http://www.hardhack.org.au/radioactive
http://www.hardhack.org.au/xrays

I now have a couple of Geiger counters but unfortunately, I haven't
yet been able to source a radioactive sample to use in a test, as
there seems some legal restrictions in Australia that prevent amateur
experimenter owning such samples, nor putting them through the post
even with a weak level of radiation. Any Australians on the list know
where, please let me know.

I have even visited numerous antique stores with my Geiger Counter
looking for uranium based ceramics or glass without success, well
nothing that is good enough for testing. But I have had many strange
looks and questions when I pull out my pocket Geiger Counter.

My next step is to build a low-level x-ray source using a Vacuum Tube
and high voltage ~45KV. Although slightly more dangerous an xray
source that can be switched on and off at the flick of a switch would
be a very useful way of testing the detector, also its been an
interest tangent.

Robert
**
Ing. Hannes Mayer wrote:
Any opinions from other members so far ?
>
>
> Cari saluti,
> Capitano.
>
> On Tue, 02 Dec 2008 20:01:55 +0100, <captain@...
<mailto:captain%40captain.at>> wrote:
> >
> > Hi Robert,
> >
> > cosmicrays.org and list owner here, Hannes/Captain.
> >
> > Well, about the experiment:
> > 1) As I wrote on the webpage, this is a highly uncertain
> > experiment. Depends on many factors - I even contacted
> > Dr. Schmeling who did the experiment in 2000 at CERN
> > and he said is was interesting, but not at all a
> > reliable detector.
> > 2) your detector(s) seem to me a little odd on the first
> > sight. I have to make a closer look when I have more
> > time in Jan. or Feb. or so. Sorry for that time delay
> > but as you can imagine, my girlfriend is "a little"
> > more important than this stuff ;-)
> > 3) I have the original pages of Dr. Schmeling I can zip
> > and post on my page later this month, but meanwhile
> > you can view this one:
> >
> >
>
http://teachers.web.cern.ch/teachers/archiv/hst2000/teaching/expt/sascha/sascha.\
htm
<http://teachers.web.cern.ch/teachers/archiv/hst2000/teaching/expt/sascha/sascha\
.htm>
> >
> > Best,
> > Captain of the muons :-)
> >
> > On Mon, 1 Dec 2008 17:35:01 -0800 (PST), william winkler
> > <billwink10@... <mailto:billwink10%40yahoo.com>> wrote:
> >> Concerning a safe radiation source for tests,  when you order a cloud
> >> chamber kit from Edmund Scientific you get a coupon that delivers
a bead
> > of
> >> lead 210 from Oak Ridge, on a needle.  A good source of alpha
particles
> >> that really sets off a Geiger Counter.  I can tell you, it sparks
a lot
> > of
> >> interest in high school science classes.
> >>  >> Don't know what other products may be available to the public
from Oak
> >> Ridge.
> >>  >> William Winkler
> >>
> >> --- On Mon, 12/1/08, fanman <fanman@...
<mailto:fanman%40lpbroadband.net>> wrote:
> >>
> >> From: fanman <fanman@...
<mailto:fanman%40lpbroadband.net>>
> >> Subject: RE: [particledetector] Cosmic Ray Detector using fluorescent
> >> tubes
> >> To: particledetector@yahoogroups.com
<mailto:particledetector%40yahoogroups.com>
> >> Date: Monday, December 1, 2008, 2:54 PM
> >>
> >>
> >>
> >>
> >>
> >>
> >> This is interesting. I normally just follow the posts here as I'm
mostly
> >> into Geiger Counters and Scintillators. I would recommend getting
> >> something
> >> mildly radioactive to verify that you are detecting high-energy
> > particles.
> >> A piece of red or orange Fiestaware, Uranium ore, old aircraft
gauge, or
> >> some such should work. Even an old alarm clock or watch with a radium
> > dial
> >> would work. Of course if you have access to a radiation counter
with a
> >> test
> >> source that would be perfect. Then you'll know if it's just corona.
> >>
> >> Looks like fun!
> >>
> >> Clay
> >>
> >> -----Original Message-----
> >> From: particledetector@ yahoogroups. com
> >> [mailto:particledetector@ yahoogroups. com] On Behalf Of Robert
Hart @
> >> Air-Stream
> >> Sent: Sunday, November 30, 2008 9:32 PM
> >> To: particledetector@ yahoogroups. com
> >> Subject: [particledetector] Cosmic Ray Detector using fluorescent
tubes
> >>
> >> Hi Everyone,
> >>
> >> I've been tinkering with a project based on a variation to the spark
> >> chamber found on the CosmicRays.org website
> >>
> >> http://www.cosmicra <http://www.cosmicra ys.org/muon- spark-chamber.
> > php>
> >> ys.org/muon- spark-chamber. php
> >>
> >> My first detector prototype is not that dissimilar to this,
except the
> >> tubes are placed between metal plates. The outer plates are connected
> >> together by bolts and connected to the Negative rail of the
supply and
> >> the centre plate is insulated by the tubes and connected to the
Positive
> >
> >> rail of the supply, making a little less lethal to the touch.
> >>
> >> Full details are here http://www.hardhack
> >> <http://www.hardhack .org.au/cosmic_ ray_detector_ 1>
> >> .org.au/cosmic_ ray_detector_ 1
> >>
> >> Anyway so far I've achieved the ability to detect "something?" as
> >> observable random pulses on a CRO, but it is difficult to confirm
they
> >> are actually due to Cosmic Rays or even Terrestrial Radiation over
> >> something else like RFI, coronal discharges,etc.
> >>
> >> Feedback would be welcome, the question is am I on the right
track or is
> >
> >> this just total fantasy?
> >>
> >> Regards
> >>
> >> Robert
> >>

Dear all,

i am currently playing arround with an avalanche photo diode (APD). As
expected my current setup is quite sensitive to light in the visible
range. Based on this my plan has developed to setup a particle detector
based on an APD. This project (hopeless) requieres two things:

1) An APD which is cooled down to -30 deg.
2) Some kind of szintelator material creating light in the visible.
3) Some electronics

(1) and (3) i can manage on my own but what is about(2)? Is there any
cheap szintelator material which is easy to get?

-Michael

Enjoy :-)

http://www.polares.org/cms/aid=721.phtml

Cari saluti,
Capitano.
--
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