30Jun»4)MDDC 982 UNITED STATES ATOMIC ENERGY COMMISSION OAK RIDGE TENNESSEE 184" CYCLOTRON RADIATION MEASUREMENT OF BREECH LOAD PROBE HEAD by Arnold Reyenga University of California Published for use within the Atomic Energy Commission. Incpairies for additional copies and any questions regarding reproduction by recipients of this document may be referred to the Documents Distribution Subsection, Publication Section, Technical Information Branch, Atomic Energy Commission, P. O. Box E, Oak Ridge, Tennessee. Inasmuch as a declassified document may differ materially from the original classified document by reason of deletions necessary to accomplish declassification, this copy does not constitute authority for declassification of classified copies of a similar document which may bear the same title and authors. t Date of Manuscript: Unknown Document Declassified: May 23, 1947 This document consists of 3 pages Digitized by tlie Internet Arcliive in 2011 witli funding from University of Florida, George A. Smathers Libraries with support from LYRASIS and the Sloan Foundation http://www.archive.org/details/184cyclotronradi00usat - 1 - MDDC - 982 184" CYCLOTRON RADIATION MEASUREMENT OF BREECH LOAD PROBE HEAD By Arnold Reyenga Hixperiment done by: D. Sewell, W. Grimshaw,and A. Reyenga Introduction This e3q)erlment was performed in order to measure and plot the radiation intensity acrof the face of the probe head, thereby noticing the points of high intensity and learning how much radiation is lost because of the beam not striking the foil. Experimental Setup The experiment was set up as shown on the sketches, starting just below the zero position and moving the probe head up past the 1/8" slot in small steps. The probe was set at 81" radius during the bombardment. Results The results shown by the graph indicate a high intensity point (21 mrAr) on the top outside sdge of the copper foil holder, another Mgh Intensity point (18.5 mr/hr) on the foil Just above the median plane, and another high intensity peak (13 mrAr) on the lower out- side edge of the copper foil holder. MDDC - 982 LEAD BRICKS / 1/8 PROBE SLOT COUNTER 2" I- O -POSITIONS LEAD BRICKS ^ I/S" SLOT SEE PROBE DRAWING NO. 3B3265 LEAD SHIELD DRAWING NO. 3B3071 WAS NOT IN PLACE DURING Tins BOMBARDMENT. i] 6 4* i! ■1 IllllilHHIHIilllil H 5 B BB a aa a >i BBBB aaaa IBBR ir«B 1::: : :::: : iP4tt llls-i III :!: ::: ±: ::; ;; n ■ laaa aaaa a a a aa«a ■aaa laaa a IBBB a laaa a ::::::; SSJSSSgS^Si ::b:; ;;; ::: :: 11 S SaSS a B aaaa aaaa ::ss ■■■■■■ r ■^ mil ::? Hi BB ■ ■ ::: III: aa aa aa aa la IV a'. I II « ■ ail 1 a ■ BBB a a B a a a B a a aaaa BBBB aaaa aaaa BBBB :::: laaa laaa IBBB ■ BBB ■■■■■■I ajai :::bb ^- i ^^^ 4--rm-T4- a::: 111:1 Hi ill i la aa la aitk a BMB IB ail a 111 ■ lit nil a 1 1 : 1 a a i I :::: aaaa " 1111 BBBB nil ■■■■■■ ■■■■«■ 1 ■ ■■■ ■ ■■■ ■ ■■■ ■ ■■■ ■ ■■■ BB ■Ba«a ■■■■■ ■ BBBI BBBBI BBBBI BBBBB ■ ■■■1 ■ ■■ IB ■ ■B II nil ^1 la i: 1 BB M 111 m , -r^ •:: i ■ BBBI ■■■■1 BBI ::: ;i' II 1 ::: ill : 1 II 11 II i: fi iii^y : B a a a 1 ■ ■ a a a a a a a a a a ■ ■ aaaa aaaa BBBB aiBB III 1 11 ill •• 1 ••SSSiSgjSS! ^ssBiSiss: MgjggS tffta s m^n^ 1 ^^ Ttttffl 'iii hi i II ffitr it: ::: ;i ::::: ' SSv t Bl BB 1 lull ill 1 III! : : III illpi IE:: !::::: Siiiss nT ■a ■a ■a i a 1 1 laa 1 1 Bl laa 1 1 Bl :; :: i " 1 I 1 5 •II S5SSS Sbbbb ;i :!:£: IB B 1 IB a ::^: ;:: I :: II '■.'■': 1 lllllll H BBB a ii 1 il imii 1 >>■■ w laai :: [tUff aa !::;:::! :::: :::::: ■«■■ ••«■ ■■■■ ■■■■ •■■■ «■■■ •■■a ■ ■: «■■ ■ ■1 ■ ■■ III fttttti iiyiii s:i ■BBBBBBI BBBBBBBi lillllll :::: :::::: i :::::::: : :::::: 5: ::: iili III ■■■ ■■■ ■■■ iiliii lillliir i giis llllllllililllllllllll 11 llllllllllllllllllllllll [ill! m ill ilii 1 iillll II III :::: [[Ejii iifii^MII 1 111111 11 111 :::: ::; m \iU^ mWAsS^ |:[| :; l-Ttrf niiifiiiiinilllliiilrlilllllllllllHjijii III ::• ■■ ■■■ ■■1 ■ M ■ ■1 ■ M ■ ■I IB ■ ■I ■■■■■ ■si: 1 ■■til ■ ■■>! i :: :: ■I ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ nillilllliilillilll^lHH^!!;^!!iii[lHIII ■ BBBBBBBBLI k. Ik > il BB ^MVM BklBB k -BBk .■■ >■> ■■■■■■■■■■ 1. 1 i: '^liiiii ■ BBBBBBBB.-BBBBBI ■■■■■■■■■■■B '%mi aaaaaaaaaaaa aaaaaaaaaaaa aaaaaaaaaaaa laaaaaaaai laaaaaaaaa ia»:.aB..aa' aar.BB-.aa-. lliiiiiliiilllllllllliiiilllMlli^ ■■ ■■■■ ;;i;il^^llllillllll[|:»![:»!l If l»li|!; ^ lllliilliill IssEEssEsissssissiEssssisEsssiissHssEsi^;:^^ ■* ■■■■ ■■ ■■■■ ■■ ■■■■ ■■ ■■■■ ■■ ■■■■ ■■ ■■■■ iilllilllllillilliilliiliiiiiiiMiiiiiiiili^ ■ ■■■■■■■■■•■a ■■■■■■k --■■■■■■■■_■ ■•■ ■> -■■■■■■■■k^BMBBaBBMraBBBa ■■ ■■■■ ■■ ■■■■ ■■ ■■■■ ■■ ■■■■ aaaa bbb ifi:;aa aaaaar^ ■■ ■■■■ ■■ ■«■■ aaaa aaaaaaaa aaaaaBB aaaa aaaaaaaa aaaaaBB aaaa aa«aBBBBa«aBaaaa ■■ ■■■■ : :::::::■:::::::::::: ::■::»:::::::::::: ::: ::: ss SSSSSSS' ::::::::::::H::::::::::ai::::::nH:n:::::n Hiiiiiihii - ■■-•••" d