Search found 168 matches: +neutrons +safety

Searched query: +neutrons +safety

by Kuba Anglin
Thu Oct 05, 2017 6:20 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Buying an He3 detector from an official supplier
Replies: 6
Views: 2952

Re: Buying an He3 detector from an official supplier

... professor aiding me, Dr. George S. Brown, used to chair the Radiation Safety Committee. He stated that he understands my project is not particularly ... 30 cpm per mrem/hr, the detector should be able to provide evidence of neutrons (around 75 cpm for an isotropic flux of 50k n/s). The digital ...
by Dennis P Brown
Mon May 22, 2017 10:39 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Neutron Scintillation Detector: start up work
Replies: 12
Views: 4787

Re: Neutron Scintillation Detector: start up work

Thanks Richard! Since my fusor puts out at least 3*10^4 neutrons/sec and I suspect a good bit higher I would hope that is enough; so, ... shocked by that ability.) But that system is solely used as a radiation safety detector system.)
by Dennis P Brown
Sun Mar 19, 2017 6:10 pm
Forum: Images du Jour
Topic: John Beutz Fusor... The Story so Far
Replies: 24
Views: 8628

Re: John Beutz Fusor... The Story so Far

... if your system design leads to constant leaks, you will not progress to neutrons anyway. You are also running other critical systems in parallel ... before ever applying voltage to that 100 kV x-former; first, for safety reasons but also, if you burn out that x-former, or design/install ...
by Richard Hull
Mon Mar 06, 2017 4:06 pm
Forum: FAQs: Fusion and Fusor Theory
Topic: FAQ - Voltage-Cross section-Current
Replies: 5
Views: 5910

FAQ - Voltage-Cross section-Current

... will require significant electrical or electronics skills. High voltage safety becomes of paramount importance to avoid being killed or injured when ... Neutrons detection This subject is dealt with extensively in the FAQs on ...
by Rich Feldman
Tue Oct 18, 2016 2:16 pm
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Neutron Transmutation Doping
Replies: 15
Views: 5311

Re: Neutron Transmutation Doping

... broad, and generally depends on qualifiers (often implicit). Tables in safety standards give, for neutrons at 2.5e-8 Mev, a Q factor of 2 and a neutron to rem factor of 980 million. So the ...
by Dennis P Brown
Fri Jul 29, 2016 9:51 am
Forum: Neutrons, Radiation, and Detection (& FAQs)
Topic: Water as Neutron Shield
Replies: 17
Views: 9153

Re: Water as Neutron Shield

... number one hazard I see with a fusor or a sim-fusor. Also, exactly what safety regulations are there for the average home fusor? Are you serious ... because it can burn (talk about safety risk; lol.) Relative to stopping neutrons paraffin is excellent and readily available to the average home ...
by Andrew Seltzman
Mon Jul 11, 2016 3:37 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Mark3 operation 3e-4 torr / quad ion source @ -40kV, 1mA-9mA
Replies: 142
Views: 58694

Re: Mark3 operation 3e-4 torr / quad ion source @ -40kV, 1mA

Runs are kept short for safety(and thermal issues) x-ray rate at the viewport surface is 10-15mR/h through the ... enough to get good counting statistics from the BTI dosimeter, so about 2-3mR of neutrons at the surface of the fusor(~3.5" from focal point) per run. I'm usually about ...
by Richard Hull
Mon May 09, 2016 6:28 am
Forum: FAQs: Neutron - Radiation Detection
Topic: FAQ - A neutron moderator for activation/detection
Replies: 3
Views: 4661

FAQ - A neutron moderator for activation/detection

... but worked OK. This works much better. All D-D fusion produces fast neutrons which can't do much of anything for the experimenter. Valuable neutrons ... metallic object close to 45,000 volts. These insulating rods are a safety factor. You could design this to go under the fusor, leaving room ...
by Doug Coulter
Mon Feb 22, 2016 12:10 am
Forum: Images du Jour
Topic: Greg Courville Neutron Club entry Feb 2016
Replies: 9
Views: 5478

Re: Greg Courville Neutron Club entry Feb 2016

... out of power or melt things), we see a super steep curve of increased neutrons with main HV potential. We get detectability in a nearby He3 around ... I suggest a nice pancake geiger somewhere in your setup for your own safety. When it starts counting fast even inside a box of 4" thick lead bricks...you'll ...
by Steven Sesselmann
Sat Nov 28, 2015 3:37 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: FICS II Planning and construction
Replies: 64
Views: 31256

FICS II Planning and construction

... ion source (seen on top). STAR-2 was quite successful it produced neutrons in the 2.5 x 10^5 range but it was temperamental and used to spit ... stuff others haven't done before, which is why one should impose double safety measures when treading an unknown path. FICS-1.jpg FICS-2 , is my ...