highaltitude.log.20120529

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[07:38] <jcoxon> morning all
[07:39] <SamSilver_> hi
[07:41] <fsphil> morn
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[08:47] <griffonbot> Received email: James Coxon "Re: [UKHAS] UKHAS Conference 2012"
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[08:53] <griffonbot> Received email: John Tanner "Re: [UKHAS] UKHAS Conference 2012"
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[09:28] <Bob_G8NSV> Mornin all
[09:32] <Bob_G8NSV> no more theories on the problem with Euros?
[09:33] <Bob_G8NSV> Eurus even!
[09:34] <navrac_> shame, i could answer the first question...
[09:36] <daveake> I think the answer in both cases is "too much power in the wrong place"
[09:36] <SpeedEvil> It was low on battery, then it switched to a 'high power' transmit mode, and either the modem reset, or the whole thing died
[09:38] <daveake> The battery was showing 5.something volts. 4 AAs so that was fine I think
[09:38] <SpeedEvil> relatively low
[09:38] <SpeedEvil> at -40C too
[09:39] <Bob_G8NSV> shame it was floating well
[09:39] <navrac_> I didn't think it was that low on power - but I have seen the rfm reset itself when putting it on maximum power. However my code sets trhe frequency and re-enables the tx every sentence so I've never worried about it before
[09:39] <SpeedEvil> ah
[09:40] <Bob_G8NSV> daveake will getyour 790 in the post later today, been working some horrid shifts at work and now on a 2 week break!!
[09:40] <navrac_> more by luck than design though
[09:40] <daveake> Bob_G8NSV No hurry
[09:40] <daveake> I do have the 817 now :)
[09:40] <daveake> TVVVVM for your work on that
[09:41] <Bob_G8NSV> will be having a play with my payload, got some 3.3v boost boards on the way
[09:41] <Bob_G8NSV> no probs dave
[09:41] <daveake> navrac_ Do you put any extar decoupling on the rfm? I think it might help
[09:41] <daveake> It really doesn't like anything other than a solid power supply
[09:42] <daveake> I've been meaning to re-setup the rfm each sentence, or whenever a reset is sensed. Not got round to it yet.
[09:43] <Bob_G8NSV> I think my payload code does that, it's based on Navracs rfm code
[09:44] <daveake> Well worth doing
[09:44] <daveake> Otherwise if the rfm does reset, the payload is gone
[09:44] <Bob_G8NSV> belt and braces, I suppose
[09:47] <navrac_> yes i have extra decoupling
[09:48] <Bob_G8NSV> what antenna did Eurus have, I never decoded it even from high altitude whereas no probs with xaben
[09:48] <daveake> 1/4 wave 2 radials
[09:48] <Bob_G8NSV> only ever a really weak fading signal
[09:49] <fsphil> I think one of the two radials might have got bent, making it more like a reflector
[09:49] <daveake> I couldn't decode at all from here. Possibly not the best direction for me. Previously balloons in that direction have been quite close so I don't know really.
[09:49] <daveake> fsphil Ah
[09:49] <Bob_G8NSV> seemed very directional, but never in my direction!
[09:49] <jcoxon> yeah going with 4x radials in future
[09:49] <jcoxon> are people keen for another similar flight?
[09:50] <WillDuckworth> yep
[09:50] <WillDuckworth> do you need anything?
[09:50] <Bob_G8NSV> definately for me, would you like to try a QFHtx antenna?
[09:50] <daveake> jcoxon Yep
[09:51] <jcoxon> so steve has a valve in the pipeline
[09:51] <Bob_G8NSV> will be finalising the design and doing more testing, the "rough" prototype works great
[09:51] <daveake> I've always used 4 radials except for this one that used a sheet of bacofoil - http://www.flickr.com/photos/daveake/6162453606/in/set-72157627579944313/
[09:51] <jcoxon> so we'd got for a float a little lower
[09:51] <jcoxon> better for predictions
[09:51] <jcoxon> and also might be a bit quicker
[09:51] <jcoxon> Bob_G8NSV, i might go with GP 1/4 wave for now
[09:51] <jcoxon> purely as its well tested
[09:51] <navrac_> will you be putting spot on it or aprs?
[09:52] <jcoxon> but will be keen for the QFH
[09:52] <jcoxon> navrac_, well we are testing the aprs
[09:52] <jcoxon> but of course the one night i set it up the packet is offline on the iss
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[09:53] <cuddykid> WillDuckworth: do you have permission for 1st weekend in June?
[09:53] <Bob_G8NSV> I will do some more testing over the next few weeks, I might try taking my payload to a nice high spot and see if any of the locals can pick it up
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[09:54] Nick change: earthshine_ -> earthshine
[09:55] <WillDuckworth> yep cuddykid - just had email from Mr Miller confiriming all weekends in June if needed :)
[09:55] <cuddykid> WillDuckworth: great stuff :D just checking predictions
[09:56] <Bob_G8NSV> I had some emails from John Coppens the guy whos site has the calculator on, he reckons the best option is to use the antenna "upside down" that will direct most radiation to the ground and horizon, with the sky recieving the least
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[09:58] <jcoxon> oh cool
[09:58] <jcoxon> Bob_G8NSV, we definitely need to test it
[09:58] <Bob_G8NSV> I have looked at the 4nec2 plots for this he did and that looks to be exactly right
[09:59] <Bob_G8NSV> I will get one knocked up and if anyone is flying with 2 payloads that would make an ideal comparison with other antennas
[10:01] <Bob_G8NSV> I am going to try and make some formers for a mini production line. I made 2 wooden formers to make the loops for my GPS QFH, and will do the same for the 434MHz one
[10:01] <griffonbot> Received email: Dave "Re: [UKHAS] UKHAS Conference 2012"
[10:02] <Bob_G8NSV> need to sort some little pcb's for the co-ax termination and there will be a 4 turn co-ax balun right by the feed point
[10:02] <jcoxon> Bob_G8NSV, sounds great
[10:03] <jcoxon> i would definitely be keen to fly one
[10:04] <Bob_G8NSV> over the next week or so I will get my payload out and about, I will try and get on some high ground and stick it in the air on a fishing pole
[10:04] <Bob_G8NSV> see who can hear it!
[10:04] <jcoxon> :-)
[10:04] <Bob_G8NSV> gonzo and astra in Southampton should getr it ok
[10:05] <jcoxon> its not easy testing these low powers on the ground
[10:05] <Bob_G8NSV> it would be interesting to tilt it at different angles and do some real far field tests!!
[10:06] <Bob_G8NSV> one site I have in mind is close to 1000' with a clear take off all round
[10:06] <Bob_G8NSV> the other about 150'
[10:06] <Bob_G8NSV> but again a clear take of to soton
[10:08] <Bob_G8NSV> the 1000' I reckon a fair few should pick it up from, its on top of the Purbeck hills
[10:08] <Bob_G8NSV> used to use it for portable operation years ago including 10GHz
[10:12] <Bob_G8NSV> <?xml version="1.0" encoding="UTF-8"?>
[10:12] <Bob_G8NSV> <kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2" xmlns:kml="http://www.opengis.net/kml/2.2" xmlns:atom="http://www.w3.org/2005/Atom">
[10:12] <Bob_G8NSV> <Document>
[10:12] <Bob_G8NSV> <name>KmlFile</name>
[10:12] <Bob_G8NSV> <Style id="s_ylw-pushpin_hl">
[10:12] <Bob_G8NSV> <IconStyle>
[10:12] <Bob_G8NSV> <scale>1.3</scale>
[10:12] <Bob_G8NSV> <Icon>
[10:12] <Bob_G8NSV> <href>http://maps.google.com/mapfiles/kml/pushpin/ylw-pushpin.png</href>
[10:12] <Bob_G8NSV> </Icon>
[10:12] <Bob_G8NSV> <hotSpot x="20" y="2" xunits="pixels" yunits="pixels"/>
[10:12] <Bob_G8NSV> </IconStyle>
[10:12] <Bob_G8NSV> </Style>
[10:12] <Bob_G8NSV> <StyleMap id="m_ylw-pushpin">
[10:12] <Bob_G8NSV> <Pair>
[10:12] <Bob_G8NSV> <key>normal</key>
[10:12] <Bob_G8NSV> <styleUrl>#s_ylw-pushpin</styleUrl>
[10:12] <Bob_G8NSV> </Pair>
[10:12] <Bob_G8NSV> <Pair>
[10:12] <Bob_G8NSV> <key>highlight</key>
[10:12] <Bob_G8NSV> <styleUrl>#s_ylw-pushpin_hl</styleUrl>
[10:12] <Bob_G8NSV> </Pair>
[10:12] <Bob_G8NSV> </StyleMap>
[10:12] <Bob_G8NSV> <Style id="s_ylw-pushpin">
[10:12] <Bob_G8NSV> <IconStyle>
[10:12] <Bob_G8NSV> <scale>1.1</scale>
[10:12] <Bob_G8NSV> <Icon>
[10:12] <Bob_G8NSV> <href>http://maps.google.com/mapfiles/kml/pushpin/ylw-pushpin.png</href>
[10:12] <Bob_G8NSV> </Icon>
[10:12] <Bob_G8NSV> <hotSpot x="20" y="2" xunits="pixels" yunits="pixels"/>
[10:12] <Bob_G8NSV> </IconStyle>
[10:12] <Bob_G8NSV> </Style>
[10:12] <Bob_G8NSV> <Placemark>
[10:12] <Bob_G8NSV> <name>Povington Hill</name>
[10:12] <Bob_G8NSV> <LookAt>
[10:13] <Bob_G8NSV> <longitude>-2.158340492522196</longitude>
[10:13] <Bob_G8NSV> <latitude>50.63003930352026</latitude>
[10:13] <Bob_G8NSV> <altitude>0</altitude>
[10:13] <Bob_G8NSV> <heading>-0.1336502242993214</heading>
[10:13] <Bob_G8NSV> <tilt>30.73936742014925</tilt>
[10:13] <Bob_G8NSV> <range>233.2859748990842</range>
[10:13] <Bob_G8NSV> <gx:altitudeMode>relativeToSeaFloor</gx:altitudeMode>
[10:13] <jcoxon> eek
[10:13] <Bob_G8NSV> </LookAt>
[10:13] <Bob_G8NSV> <styleUrl>#m_ylw-pushpin</styleUrl>
[10:13] <Bob_G8NSV> <Point>
[10:13] <Bob_G8NSV> <coordinates>-2.158340492522196,50.63003930352026,0</coordinates>
[10:13] <Bob_G8NSV> </Point>
[10:13] <Bob_G8NSV> </Placemark>
[10:13] <Bob_G8NSV> </Document>
[10:13] <Bob_G8NSV> </kml>
[10:13] <Bob_G8NSV> Yuk, Sorry!!
[10:13] <Bob_G8NSV> not how to copy a google earth placemark then!!
[10:13] <Bob_G8NSV> again sorry
[10:13] <Martin100> Could someone please delete the TYKE launch in Yorkshire originally scheduled for the 2nd June from the calendar.
[10:14] <Martin100> Been laid up in bed for some time now and won't be on my feet anytime soon for launch or a chase
[10:14] <Martin100> Is there some way to keep the flight doc for testing rather than let it go live this weekend?
[10:17] <Bob_G8NSV> getting ready to pop out now, got to do some stuff with the XYL or she wont be to keen when I sneak payload stuff in the car when we go out for a "picnic" in the Purbecks!!
[10:18] Nick change: Darkside -> Darksaeed
[10:19] <Bob_G8NSV> had no responses to the suggestion of adopting RHCP as the standard for payload circular polarisation, no objections anyone??
[10:20] <Bob_G8NSV> wont matter if you are using vertical or horizontal antennas, but its about 20Db plus if you use LHCP!
[10:20] <Bob_G8NSV> that should be -20Db plus
[10:21] Nick change: Darksaeed -> Darkside
[10:25] <Bob_G8NSV> See you all later
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[10:51] <griffonbot> Received email: Ed Moore "Re: [UKHAS] UKHAS Conference 2012"
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[10:57] <edmoore> under crc32, 'codding' collides with 'gnu'
[10:58] <edmoore> and 'exhibiters' collides with 'schlager'
[10:58] <edmoore> more people need to know this
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[11:10] <jcoxon> thanks edmoore
[11:10] <edmoore> just saying
[11:10] <edmoore> it could cause all sorts of issues with the DL
[11:12] <jcoxon> :-)
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[11:37] <jonsowman> grumble Freenode
[11:38] <edmoore> frumble greenode
[11:39] <edmoore> would make a good name for a harry potter character
[11:39] <edmoore> a goblin that runs a book shop that is rude to the customers
[11:39] <SpeedEvil> Expellium connexion.
[11:41] <gonzo_> irc is witchcraft, not wizardry
[11:49] <staylo> Slappius troutius!
[11:49] <staylo> Actually that was more life of brian
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[11:57] <gonzo_> Bwian?
[11:59] <Elwell> "he not an ircop, he's a vewwy naughty boy"
[12:02] <kokey> I'm glad this conversation is confined to irc
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[12:05] <SamSilver> "The interior of the craft was reportedly in good condition, and according to astronaut Don Pettit, it smelled like a new car."
[12:06] <Laurenceb> i like it
[12:06] <Laurenceb> it looks cheap
[12:07] <Laurenceb> in a good way
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[12:39] <WillDuckworth> anyone know how eurus monitored the voltage? was it a divider on an analogue in port?
[12:40] <jcoxon> yeah voltage divider
[12:41] <WillDuckworth> did you use high tolerance resistors or whatever you could get
[12:41] <jcoxon> whatever i could get
[12:41] <WillDuckworth> ta - just tinkering
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[13:02] <SpeedEvil> Doesn't really matter - you measure it with a DMM - and note down the divisor
[13:02] <SpeedEvil> don't even need to do it obboard
[13:03] <SpeedEvil> onboard
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[13:10] <eroomde> yes a 2 point cal with whatever resistors you get would do the trick
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[13:33] <gonzo_> you have to watch the impeadence of the ADC port if you are using high values in the PD
[13:33] <gonzo_> The Z may change with it;s actually doing a conversion
[13:34] <gonzo_> you're better to use the ADC to make the measurements and do that 2 point cal
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[14:04] Nick change: Randomskk_ -> Randomskk
[14:08] <eroomde> logout
[14:08] <eroomde> whoops
[14:09] <griffonbot> Received email: Kristaps "[UKHAS] Attitude control for HAB"
[14:09] <daveake> login user=edmoore password=secret
[14:10] <fsphil> hey, ed's the same password as me
[14:11] <daveake> I can fix that. Just let me have your card details and pin number
[14:11] <Darkside> hey thats' the same as on my luggage
[14:12] <Darkside> ok sleep time
[14:15] <fsphil> nite!
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[15:21] <daveake> ping navrac_
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[17:26] <m0lep> Anyone got an example good wav file of some RTTY lurking anywhere grabbable, please? I'm trying to crack the problem I'm having with dl-fldigi, but the only wav I've got was recorded when I was having trouble, and may well be dodgy...
[17:26] <jonsowman> http://tenbus.co.uk/icaruscapture_30secs.wav
[17:27] <jonsowman> full version here
[17:27] <jonsowman> http://tenbus.co.uk/icaruscapture.wav
[17:27] <m0lep> Thanks :)
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[17:34] <m0lep> Excellent. That seems to be happy now. Mind, new laptop has a bit more grunt than old one...
[17:34] <m0lep> ;)
[17:37] <costyn_> nice... that attitude control for HAB... very clever
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[17:56] <cuddykid> ping Upu
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[20:29] <griffonbot> Received email: Josh Taylor "[UKHAS] Anyone want to piggyback payloads?"
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[20:42] <Lunar_Lander> hello
[20:43] <nick_> hi
[20:45] <fsphil> yoo
[20:46] <Lunar_Lander> did more geiger counter testing today
[20:46] <Lunar_Lander> with and without potassium salt
[20:46] <Lunar_Lander> salt had some influence
[20:47] <nick_> What is the salt for?
[20:47] <Lunar_Lander> it contains potassium-40
[20:48] <Lunar_Lander> we just placed it on the table next to the counter and let it record for 3 hrs
[20:48] <Lunar_Lander> before, we just let the counter run for 3 h to measure the background
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[20:49] <nick_> What was the difference?
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[20:50] <Lunar_Lander> about 3000 counts background, about 5000 counts with salt
[20:53] <nick_> How frequently did you record the rate?
[20:53] <nick_> Do you have any pics of your detector?
[20:53] <Lunar_Lander> one sec
[20:54] <Lunar_Lander> data was taken once per second
[20:54] <Lunar_Lander> http://mightyohm.com/blog/products/geiger-counter/
[20:54] <Lunar_Lander> this it it
[20:54] <Lunar_Lander> I connected it to the PC using the FTDI 3.3V breakout from sparkfun
[20:54] <nick_> Those are AA or AAA batteries?
[20:55] <Lunar_Lander> AAA
[20:58] <nick_> You launched one of these?
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[20:59] <NSS> what nicknme is registered?
[20:59] <Lunar_Lander> nick_, no, I have 0 flights so far
[20:59] <fsphil> c'mon Lunar_Lander :)
[20:59] <nick_> You plan to launch it?
[20:59] <Lunar_Lander> yeah on flight 2
[21:00] <Lunar_Lander> xD
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[21:00] <Lunar_Lander> I looked at the Canon A490 yesterday as daveake mentioned it
[21:00] <Lunar_Lander> at 44 Euro I think it is OK
[21:00] <fsphil> bargin
[21:00] <fsphil> plus you'll actually get decent images
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[21:02] <nick_> You want to measure the cosmic flux?
[21:02] <Lunar_Lander> fsphil, yeah
[21:03] <Lunar_Lander> nick_, actually I am looking at what exactly you can do with a geiger
[21:03] <Lunar_Lander> cosmic flux it is probably for the first ascent of it
[21:03] <Lunar_Lander> probably need a coincidence mechanism or so later
[21:03] <nick_> I can see some problems with it.
[21:04] <nick_> Mostly that the flux you'll measure is dependent on the orientation.
[21:04] <Lunar_Lander> yeah
[21:04] <nick_> And also that you might get too high a rate.
[21:04] <Lunar_Lander> the east-west effect?
[21:04] <Lunar_Lander> yea
[21:04] <nick_> east-west?
[21:06] <Lunar_Lander> ah they thought there is a flux from east to west
[21:06] <Lunar_Lander> at least in the 1930s
[21:06] <nick_> The flux is basically all down
[21:06] <Lunar_Lander> yeah
[21:07] <nick_> So you need to worry about whether your cylinder's major axis is horizontal (so your detection area is width x height) or vertical (pi r^2)
[21:07] <Lunar_Lander> yeah
[21:07] <Lunar_Lander> that thing normally sits horizontally
[21:07] <nick_> My understanding is that on a balloon it'll be whipping around everywhere.
[21:08] <Lunar_Lander> yeah, some pendulum motion is there
[21:08] <gonzo-mob> what is the gas filling in thar det?
[21:08] <Lunar_Lander> but usually the higher you get the calmer it gets
[21:08] <Lunar_Lander> if you look at the videos of launchings
[21:08] <nick_> So maybe you'll need a gyro to measure the orientation too
[21:08] <Lunar_Lander> neon, argon and bromine
[21:08] <Lunar_Lander> yea
[21:09] <nick_> And you should see how fast the tube charges up, what rate it can handle.
[21:09] <gonzo-mob> will the pressure differential be an issue?
[21:09] <nick_> You can check the cosmic rate with altitude in the PDG
[21:10] <Lunar_Lander> yeah
[21:10] <Lunar_Lander> PDG?
[21:10] <Lunar_Lander> gonzo-mob, doubt it, NickB1 had flown that thing
[21:10] <nick_> http://pdg.lbl.gov/2011/reviews/contents_sports.html
[21:10] <gonzo-mob> i assume you are aware of the issurs of hv in near vacuum
[21:10] <nick_> Particle DAta Group
[21:10] <Lunar_Lander> ah
[21:10] <Lunar_Lander> gonzo-mob, exactly for that I planned a vacuum test
[21:10] <nick_> And then there's the issue of the pressure.
[21:10] <Lunar_Lander> yeah
[21:11] <nick_> Hmm
[21:11] <nick_> Aparently I suck with the online PDG.
[21:11] <gonzo_> rrr, just throwing ideas about, but you're obviously a reasonable way down the line here
[21:11] <nick_> I have the cosmic ray section bookmarked in my paper copy
[21:12] <Lunar_Lander> no problem,I found it under astrophysics
[21:12] <nick_> I thought someone where launched a geiger tube
[21:12] <Lunar_Lander> gonzo-mob, how do you mean?
[21:12] <Lunar_Lander> nick_, yeah NickB1 in Belgium flew that counter that I have too
[21:12] <Lunar_Lander> his simply stopped above 20 km
[21:12] <nick_> I thought he said it crapped out above a certain height,
[21:12] <Lunar_Lander> thus I want to pressure test it on the ground
[21:13] <Lunar_Lander> I arranged for that at the physics dept.
[21:13] <nick_> Where are you based?
[21:13] <gonzo_> Lunar_Lander, was that questio relating to te HV issues or the pressure?
[21:14] <Lunar_Lander> nick_, osnabruck, germany and you?
[21:14] <nick_> I'm in Oxford
[21:14] <Lunar_Lander> gonzo-mob, the "way down the line"
[21:14] <Lunar_Lander> ah
[21:16] <gonzo_> rrr meaning that you are a long way into the project
[21:16] <Lunar_Lander> ah
[21:16] <Laurenceb_> nick_: do you know John Chalker?
[21:16] <nick_> No
[21:16] <nick_> At least I don't recognise the name
[21:17] <Laurenceb_> http://www-thphys.physics.ox.ac.uk/people/JohnChalker/
[21:17] <Laurenceb_> are you based in DWB?
[21:17] <nick_> yes
[21:17] <Laurenceb_> ah
[21:17] <Laurenceb_> hes on Keble road - my former tutor
[21:18] <Laurenceb_> i was at oxford till '08
[21:18] <nick_> Yeah, the theory dept is kinda attached to our building
[21:19] <nick_> But I only really know particle physicists
[21:19] <Laurenceb_> i got a bit involved in atmospheric (where the balloon interest came in)
[21:19] <nick_> And a few astro people
[21:19] <Laurenceb_> but now i work in medical electronics
[21:19] <nick_> Cool
[21:20] <Laurenceb_> so you want to fly a scintillator?
[21:20] <nick_> Yes
[21:20] <nick_> Hopefully I'll be able to launch something of a decent size to get a good flux
[21:21] <Laurenceb_> i was wondering about a tethered EIC fusion reactor and some sort of gamma detector
[21:21] <Laurenceb_> *IEC
[21:21] <Laurenceb_> for minefield clearance
[21:21] <Laurenceb_> kind of dangerous
[21:22] <nick_> You've lost me
[21:22] <Laurenceb_> massive flying neutron source on a balloon
[21:22] <Laurenceb_> irradiates a whole field
[21:22] <Laurenceb_> then you overfly later with a gamma ray spectrometer
[21:22] <Laurenceb_> to detect the explosives
[21:23] <Laurenceb_> very mad and very dangerous :P
[21:23] <fsphil> I do believe he's trying to take over the world
[21:24] <nick_> Yes, crazy
[21:24] <Laurenceb_> you swap landmines for lowlevel radioactivity
[21:25] <gonzo_> there was one plant I went to with a big arsed neutron source, shining through a pipe, with something flowing through (forget what) and they looked for the absorbtion
[21:25] <SpeedEvil> Are you sure it's neutrons, not x/gamma rays?
[21:25] <gonzo_> used to have to go through all the health physics checks to get out
[21:25] <Laurenceb_> yeah i thought it would be gamma
[21:25] <gonzo_> pretty sure it was neutron
[21:25] <Lunar_Lander> XD!
[21:26] <nick_> I went to a research reactor once.
[21:26] <nick_> Getting in and out of there was not easy.
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[21:26] <nick_> They have basically weapons grade uranium
[21:27] <gonzo_> I used to go to aldermaston about once a week
[21:28] <nick_> If you ever get a chance then look into a reactor.
[21:28] <nick_> The cherenkov radiation is cool
[21:28] <gonzo_> but the main inner site where the interesting stuff was had men in black jump suits with MP5's all around
[21:28] <nick_> Weird
[21:29] <nick_> I didn't see anything like that at the reactor plant I went to.
[21:29] <gonzo_> I have been in the training mockup of the sizewell A reactor
[21:29] <nick_> Although apparently they have a yearly military exercise to secure the place as fast as possible.
[21:29] <gonzo_> it was a quarter section for training
[21:30] <gonzo_> yep they used to run them with no notice. So you would be booked for a visit and find it locked down. Not even able to get in to reception
[21:31] <gonzo_> but it cost them twd days of my time plus hotels etc, so we didn't lost out
[21:31] <nick_> My favourite thing about the visit (excluding my experiment and the beer) was the safety test to be given access to the radiation zone.
[21:31] <nick_> It was basically an exercise in selecting the answers that didn't have any translation errors.
[21:33] <gonzo_> they used to have a site training course, which told you the procedure for each alarm. The best was the criticality alarm. Where you put your head down and run like buggery. Stopping for nothing
[21:34] <gonzo_> but unofficially it was, you put your head between your legs and kiss your arse goodbye
[21:34] <fsphil> Brown Alert
[21:34] <gonzo_> they only wanted you to run away to make it easier to colect your dossimetry tags off your corpse
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[21:34] <gonzo_> heheh yep that's about right phil
[21:34] <nick_> Nuclear plants are cool.
[21:35] <nick_> I wouldn't mind going into the nuclear sector if I get a real job
[21:35] <gonzo_> having worked in them you realise that everyting is so tightly controled, that they are safer than your own house
[21:40] <nick_> Lunar_Lander: do you have any idea of the rates at which your geiger counter will detect cosmics?
[21:41] <Lunar_Lander> wait
[21:42] <Lunar_Lander> this is the data by Nick in Belgium http://img705.imageshack.us/img705/5038/radiationfalcon05052015.jpg
[21:43] <nick_> This was just a couple of weeks ago?
[21:43] <nick_> Does he have any more info?
[21:45] <Lunar_Lander> yeah he comes on here like regularly
[21:45] <Lunar_Lander> http://www.mightyohm.com/forum/viewtopic.php?f=15&t=3333
[21:45] <nick_> I found his blogspot about it
[21:45] <nick_> But my French isn't great
[21:46] <Lunar_Lander> there is some english info in the mightyohm forum that I just posted
[21:47] <Lunar_Lander> what's his blog address?
[21:47] <nick_> http://alerte-radiosondes.blogspot.fr/2012/05/ballon-falcon-howest-du-5-mai-2012.html
[21:48] <nick_> I found a link on the mailing list
[21:48] <nick_> https://groups.google.com/forum/?fromgroups#!topic/ukhas/g7Mt-1tvMro
[21:48] <Lunar_Lander> ah
[21:48] <Lunar_Lander> that is a different guy who tunes in on launches
[21:49] <nick_> OK
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[22:20] <Elwell> (research reactor) -- hands up all who knew there was one in greenwich :-)
[22:21] <Elwell> http://www.ingenia.org.uk/ingenia/issues/issue10/Beeley.pdf
[22:24] <Laurenceb_> haha
[22:24] <Laurenceb_> crazy
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[22:24] <Laurenceb_> i could put that in my living room
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[22:27] <Elwell> 'leaving a hemispherical hole about 2m in depth and radius'
[22:27] <Elwell> makes carpet fitting alkward :-)
[22:28] <Elwell> I love the fact that since it was MoD it wasn't a 'licenced site'
[22:28] <SpeedEvil> Unbelievable.
[22:28] <SpeedEvil> Came in under budget.
[22:29] <Elwell> yeah thats quite impressive
[22:30] <Elwell> wonder how much the east kilbride one cost to cleanup?
[22:30] <Laurenceb_> http://i.imgur.com/hYDXy.png
[22:30] <Laurenceb_> ready to fab XD
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[23:21] Lunar_Lander (~gd-dirac@p548823A6.dip.t-dialin.net) left irc: Quit: Verlassend
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[00:00] --- Wed May 30 2012