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T@ Maeuss t CASTLE PLANNIHG Tablo 1 presents tho latest shot cehodulo, showing tho proposed sites lxperiments whioh mi~t be mmeidered l s commitments, e.g., those oonsiderod neeessa~ in order to l esesa tho perfomamoo of tho models. Thermal measuremente will llso be mdo m lll ehots. We told tho DODwe wauld measure the total themmal flux in order to lliminate a e~plete program from their list, llthough this was not originally part of our progrm (tho
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operationally moro difficult for UC, a’nd we did not particularly want to do lines, photo imtsllatioms, lte) is lstimatodto be a,roumd m. minim dollars, “ and they wore idO-d that’if they oould furnish this money us wdd lgree to suoh l lhote It appears they will b. sM. to do this. The position ehosca by tho DOD for this diet it off tlw mutlmoot oomer of BiUni Atoll, k l spot between BokorownA and Bokoaotokutoh about peso tho barg. b. amhorodwithtwo lima (and we would probably insist ~ adding anothor, lo l s to have l triangular crray), koepiag the tension oonstant by us. of l Sea-Wlo lngiao (am outboard motor mffairj. Aooording tonumbors which they got from tho hydrographio offioo, the wind spood amragoa 20 hots, height (frme orest to trough) la 2 or 8 fi~ fiese aro apparently tho only roqu$rements U@ plaoec on Zombio, and 4 aotually there is only aBo that Is redlly stringent, the Yleldz the others one wants probably in decreasing order of priority. There was a dlsoussiom at IASL between Bradbury, Froman, Mark, Bolluway, and Ogle$ in whlclt the quetition wass does me instnmaent any shot Im really great detail, and if SO* whtoh one? Froman and Holloway lrguedlnitlally lgain-t a large instrunentitim program for amy of the tests, maintaining that a yield
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At the moment, then, the plans l re for yield, time Interml between reaaticwm, •lpb~ both fra and stred p%oturec (we latter in UI lttempt to follow the radiation flow). Then in lddition one proposes many other thinga~ the measurement progrnmwhioh UCRL will do for us, involving l combination of try to look lt tie total number of neutrons lnd at the fission frapento in theuay HaMk tid on Hike shot, Also, there is a proposal to do Phonex those l re by so means firm. The ocmoluoion lt the moment is that lgain we meaoure yield, time inteml, alpha, frame piotures, and the rise of the ~amma imtensity from the 0 QJlieralof—fhe fiae slope. nese l re ‘ e experiments we mu8t do to txy to obtain the informtiom T Division has a~ked for. 18 addition, w. might do whate~r else of ~alue we oan under the shot conditiorm given by those The plan is presently to put this model om l barge, 2SOOyda off Aomoen inside the lagoon. Howe~er, if Upshot results indioate that streak photography should be done on the Alarm Uook, the idea Is that the barge oould be ewung lround lnd beaohed on one of the islands in the YuroW-to-Aomoen ohain, probably Uorikku. So far as this group is concerned, we ham essentially no responsibility exoept for ball of fire measurements~ UCRL l re making their own meaaure-nte on all other aspeots. Actually, the ball of fire studlea ar~ in Berkeley’s program nther than ourc..they will be done by EGW, probably eon. traoted thnugh LASL, but not neoeasa~ly our responsibility. Frame piotures l re planned for Shots 1~ S, and 41 both frame and streak piotures on Shot 2J and posdbly streak piotures for Shot 30
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It was Oglo~s foollag that wo should not tsy w fast photography ~ the Zmbio, if Mark would ~ this, beoauso ho was lfzmid the unoortaimty in posit~on of the bar~esould necessitate suoh l largo field of T30w that tho resulting resolution would be toe poor to make the pioturos worthwhllo- &e would lxpoot to loam tr~tho frame piotures whether or not thero woro any fantastio aqmaaetrios. Felt pointod out that if thoroworo a setious mpturc of tho oaso $t would porsiat for quit. l long whiloO and shoti fooal-length lenses eouldplok it up. Cbo toot resolution oanbo obtdsodwith ifwe oan dowlop l suitablo desi~ for l relatimly inoxpoaslvo oamera station (whioh ho thought quit. possible), me should plan ~ buildlag tho designs and ohooso l spot for St. The lotual omstruoticm for l feu month, h whioh the we m3@t havo isoro informatim emoel or go ahomd on it, l s ipdieatod~ Eouemr@ it w. do not and be lblo to plan for auoh l CUT thought tho ehaaeos of positioning tho bargo to within 30° or dlstanoo fr~ the shoro bettor than mm angle, beoauto tho Iattor would -ry with the dlreoti= of tho wind aad ourrent. He uould oxpoot it to move approximately on the l ro of a oirolo or an ellipse, perhaps 2, S@ 400 ft toward and lway fran tho reofO If one put l station duun ~ Chieorete, -rlationt in wgle fran tho ahoro should not be no muoh of a wurry. This would b. l ctatioa to hold, say, two frame oamoras and two streak oamoraa (the latter Felt wuld inolude to got the tiresinterval, sinoe they take up mly a foot or more ro~ in tho station). AC for distanae, Chieeroto is about S nautioal miles from tho proposod position of the barge, and according to Felt thib is aooeptablo~ Grier suggested if tho #tatian were moved baok it wuld dooreaae butldiag costs and tho peroontage -riation due to anchorimg probloma, and Iaoroaee tho field of tiew. Atmoapherie troublos might b. inoreasod, but Felt did not W.nk thoso would Here s discussion lnauod l s to possiblo moaas of bettor poaitioniag the barge. Felt waldered whether l so-o moohanism oould not be utilised. OIKeofo said that tho navy seno anteana osn position to lbout l degreo (a dogreo or two would be lbout 250 f% lt 2 w $ aailes, uhioh might not be too bad)~ this is l detioo whioh odd b. pulled out of mothballs without any dowlopmont. Felt thought if suoh things llrosdy lxlsted, perhaps -S oould b. ti~eloped to position it withb 1/4 of a degree. The bargo IS lbout 11 ft doop, aooordlng to Cur~, with lbout 6 ft of that abore tho watere The bomb wI1l be about 4 f% abo~o the barge, so onO figuroo on looklag, say, 10 ft lbovo water lwo1. Felt muld lxpeet to us. l
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Motes of Mtgo NPG For tho other shots, the follmlmg pesit$~s wero piokod: “- : llko to be out in the water;-~f poauibl;~-beo~so it simplifies prcblemo -d allms werkiag in the ststiom comer” after the shot. It was . ,.~.~ lgreed to lsk Capboll to look into the rolktive oo~ts of s lamd amd swof .-”. : All these statioms till ham, Im ldditi~. to tie frame oamaraa, - .; two Bowezm to get time iate=also :$ Campbell wi 11 be saked to potnt the photo station for the AIMU . .: test beoomes l lamd shot umd streak plotures l re neoo~sary. .:*... a B. Ball of Fire Photo Statiams Cowmge of the separate shots would be u foil-as .- ‘l’he.deoiaiom em Bokon or Mush is to be mad. by Campbellz ltthor to get up about 80 ft or so lbom the ~lt
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how ieuoh higher it iao The tower on &u is s rparofimcr, whhh d 11 aombino the radio amd televidon installathn, photo statlomO amd spaoe for stew~rt.?hoto lq’~ipment will not be oomoentrated bore Wt will be split betmon the sereril towers. _.. The exaot position of the photo sites ~ 11 b. left up to Campbell, the requl rea9at being wIy that they oan so. what they l re supposod to ..0, and if possiblo~ that Mey be as far lay frm the salt spray l s Ss feaalblo. ?!Stati~~ arg needed for Shots Z emd S. Watt and Ogle lgreed that -“’~. plaoo to mako a 2500-yd strai~t Mae for the moutm pipes. Watt said his %4 The plainhero is to lttespt to telemeter thts lmfonaati~ mm l telephone wire, @ oon~erting it to aa audio frequenoy. It seem m. must have a deteoting instrument z 500 or 600 yde from the bomb beoause it oamnot be muoh fux%her, to measure slpha at the point, oonwert it to an ludio frequeney and start sendlag it out, and let it last umtil the shook hits thedeteotor, whioh gives about Oel seo or 00. Ehotly how thSs is oonvorted to en audio frequency 16 not knowne Grier pointed out that they ham had enough Toltige iaduoed on the lines here to blow up the teleph~e oable, relati~ly so= lfter sero, thought it would be neeesaa~ to get the si~l out l s far l s one ooul~ l s fast l a one oould~ by some sort of radio system. Wwevor, l radio 08s not be put that close. From past experience, the tramsmlssion outs off and stays off fqr quite l long timeg %ithexplalmed that tie Moa is to oharge up l oondenser or something, wait until the ll~tromagnetio si~lc l re orer, take a good fraotion of a seaond to get the signalout. liereiterated that we l - . not sure any of the systems being talked lbout will work (and me m ~ly telemeter l number, not the boost), but felt that lt this stage of We game we should glw Campbell an idea of what we ml& aeodo T’Ms muld tnolude l reoording station m Ikyuo “%’*
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also uamt to bo on the other islands whore it is now pl-od to put up phote towers. No omo was sum, Seely dd the elocer thay ean get the better it im for thaa, up to a point-di staaoo ~es more dlfferemoo to *- thos it does to * photographic people. The black b llla ha~e perfomed fairly well but do not work in olose (they blow up), and one #till xaeodel pretty good memu’e of mlr lttenuati on to lnterprot their rediags. We ham msked Stewart to measure the time iateml by looking lt tho Teller light, wMoh Ogle thought ho oould do from l t-er lt quite a It was deoided that Phill%pa should think for awh$l. lbout what sort of atatia he needs and where it ehould bo, Ogle suggested putting threshold deteetors amd nuclear lmuloi~ plutes at the end of the vaouum plpea. Someone pointed out that Krause’s BtatiM had no ro= for this sort of thiag on lVJ. However UCRL’s atatl~ haa not yot Smith aaked whether anyone will do any elootromaqetio work to get lppears to be any point in it~ Smith thought sane protision should be made for room cm - to do odd experiments llko tMc. One should also, if possiblos tq to aatioipate what llce mi~t possibly be m Enyu, shoe onmp faoilit$eo Eotes Edited by: