Produkce neutronů na tlustém olověném terči obklopeném ...

Produkce neutronů na tlustém olověném terči obklopeném ...

Vyuit ttivch reakc k produkci neutron pro transmutaci radionuklid experiment deuterony 2,52 GeV Ondej Svoboda 6. 12. 2006 e Obsah prezentace vod Spalan reakce Experimenty spolen vod Deuterony 2,52 GeV Zvr 2 vod projekt Energy plus Transmutation

Projekt E+T se zabv vyuitm urychlova k transmutacm a k produkci energie. Doposud byla v rmci projektu provedena cel ada experiment v oblastech: - terovch materil a vhodn geometrie - zdroje nabitch stic s ohledem na jejich vydatnost a dosahovan energie - transmutan schopnosti systm (jodov vzorky) - sloitj sestavy s uranovm blanketem 3 Souasn stav vzkumu ve svt V souasn dob je naplnovna cel ada experiment se spalanmi teri a rozshlm blanketem Ansald o Framat om Myrrh

a 4 Pehled dalch plnovanch experiment Projekt, zem Zamen Energie ve svazku el Stav TRASCO INFN Italy transmutace 30 MW (1 GeV; 30 mA) ADS tepeln vkon 1500 MW ve vvoji BARC Indie

transmutace, Th cyklus 30 MW (1 GeV; 30 mA) ADS ve vvoji CONCERT Evropa vceelov 5 MW (1,3 GeV; 3,8 mA) demonstran ADS projekt Moscow Meson Factory INR, Rusko vceelov do 3 MW (0,5 - 1 GeV; 0,1 - 3 mA)

demonstran ADS tepeln vkon 4 - 6 MW nvrh J-PARC Japan vceelov 750 kW (600 MeV, 1 mA) lehkovodn reaktor ADS tepeln vkon 800 MW ve vvoji Linac for ADS IHEP, China vceelov do 450 kW (50 - 150 MeV, 3 mA) XADS ve vvoji

KOMAC Test Facility HIPER KTF, Korea vceelov v prvn fzi 40 kW (20 MeV, 2 mA) ADS tepeln vkon 5 MW ve vstavb ENNG - XADS ITEP, Russia vceelov Kart - XADS KURRI, Japan vceelov 18 - 200 kW tkovodn reaktor XADS ve vstavb (36 - 100 MeV, 0,5 - 2 mA) tepeln vkon 100 kW 20 - 150 kW

(20 - 150 MeV, 1 mikroA) Pevzato z konference konan v Jaipur, Indie, leden 2006 XADS ve vstavb 5 Ttiv (spalan) reakce Pro vtinu transmutanch reakc potebujeme siln neutronov pole => hledn vhodnho zdroje Vysokoenergetick nabit stice produkuj pi srkch s jdry tkch prvk mnoho neutron (ttiv reakce) 6 Energy plus Transmutation 7 Hlavn cle experimentu

Studium spalanch reakc a hustot neutronovch tok ve velkch systmech tere a blanketu Srovnn experimentlnch vsledk se simulacemi a vyvozen zvr z hlediska pouitch model a knihoven Oven innch prez pro vysokoenergetick neutrony Vzkum neutronov bilance a schopnost multiplikace pouitho blanketu 8 Ter

Ter - tlust olovn ty (dlka 48 cm, prmr 8,4 cm), rozdlen do 4 st Aktivan detektory - umstny mezi jednotlivmi stmi tere, dle pak ped, za i nad blanketem Ter byl obklopen prodnm uranem ve form vlc (206,4 kg) Cel sestava kryta v boxu, stny vyplnny polyethylenem (biologick stnn) Stny boxu vyloeny kadmiem pro odstnn tepelnch neutron 9 Profil svazku Ped ozaovnm Polaroidov filmy Bhem ozaovn Cu flie (pmo ped terem) 10

Intenzita svazku Kruhov monitory - Al tvercov monitory Al+Cu 10 x 10 cm2 11 Detekce vznikajcch neutron (1) Neutrony vznikajc ve spalanch reakcch v teri byly meny metodou neutronov aktivan analzy Pouit aktivan materily - Au, Al, Bi, Co, Y, In a Ta flie Parametry: hmotnost ~ 1 g, tlouka ~ 0,1 mm (v zvislosti na materilu flie), celkem cca 100 kus Al

Au B i Co I n Ta 12 Detekce vznikajcch neutron (2) Prahov energie [MeV] Polo as rozpadu Ta (n,2n) 180Ta 7,6 8,152 h Ta (n,3n) 179Ta

14,3 1,82 y Ta (n,4n) 178Ta 22,2 9,31 min Ta (n,5n) 177Ta 29,1 56,56 h Ta (n,6n) 176Ta 37,5 8,09 h Ta (n,7n) 175Ta 44,4 10,5 h In (n,) 116mIn

0 54 min In (n,2n) 114mIn 9,1 49,5 d In (n,3n) 113In 16,2 Stabiln In (n,4n) 112In 25,9 14,97 min In (n,5n) 111In 33,7 2,8 d In (n,6n) 110In

43,8 4,9 h In (n,7n) 109In 51,2 4,2 h Reakce 181 181 181 181 181 181 115 115 115 115 115 115 115 13

Vyhodnocen fli Flie byly promeny na HPGe detektoru Vyhodnocen namench spekter jsem provedl pomoc programu Deimos32, kter fituje gama-pky Gaussovou kivkou Nsledovalo piazen pk k pslunm izotopm Vtky jednotlivch izotop ureny s ohledem na vechny korekce (rozpad bhem ozaovn, koincidence, nerovnomrn ozaovn, plon zie..) 14 Korekce na nerovnomrn ozaovn

Nuclotron jako vceelov experimentln urychlova bohuel nepracuje vdy zcela ideln Ba 198 64,68408 0,9964 44m 58,6 0,9962 14,959 0,9849 3,18 0,9289 Au Sc 24 Na

191 Au Vstup z integrtoru svazku na Nuclotronu erven 2004, protony 0,7 GeV 3,0E+10 Intensita svazku isotop poloas rozpadu (h) 2,5E+10 2,0E+10 1,5E+10 1,0E+10 5,0E+09 0,0E+00 0 5000 10000 15000 20000 25000 30000 35000 Sekundy od potku ozaovn 15 Urychlova Nuclotron

Supravodiv urychlova a 12,8 GeV na proton, respektive 6 GeV na nukleon (monost urychlovn jader a po uran) Extrakn doba 10 s Intenzita svazku 108 a 1011 Supravodiv magnety ze slitiny NbTi chlazeny na 4,5 K Obvod 251,5 m, hmotnost chlazench magnet pes 80 tun Stle se ek na rekonstrukci + stavba boosteru 16 Experiment Deuterony 2,52 GeV 17 Svazek deuterony 2,52 GeV 18 Monitory svazku - reakce N jader (izotop) Nd

NA x A na Al monitorech svazku reakce 27Al(d,3p2n)24Na, pouze jedin experimentln hodnota innho prezu: 15,25 1,50 mbarn (2330 MeV) na Cu monitorech svazku detekovny izotopy 58Co, 56Co, 55Co, 52Mn, 48Cr, 48Sc, 44mSc, 57Ni, 48V, 43K, 61Cu, dn experimentln data k innm prezm!!! => Cu monitory svazku pouze pro relativn porovnn 19 Monitory svazku vsledky celkov tok deuteron pes Al monitor 6,4(7)x1012 posun svazku: 0,3 cm dol a 1,5 cm doprava profil svazku eliptick blzk kruhu 20

Podln distribuce produkovanch izotop na Au a Al flich 3 cm od osy tere 1E-03 Vtek [1/g*d] 198Au 196Au 194Au 193Au 192Au 24Na 1E-04 1E-05 3 cm from the target axis 1E-06 0 10

20 30 Vzdlenost od potku tere [cm] 40 50 21 Radiln distribuce produkovanch izotop na Au a Al flich prvn mezera 1E-02 198Au 196Au 194Au 193Au 192Au 24Na Vtek [1/g*d] 1E-03 1E-04

1E-05 1E-06 1E-07 2 4 6 8 Vzdlenost od osy tere [cm] 10 12 22 Radiln distribuce produkovanch izotop na In flich prvn mezera 1E-02 116mIn 115mIn 114mIn 111In

109In Vtek [1/g*d] 1E-03 1E-04 1E-05 1E-06 1E-07 2 4 6 8 10 12 Vzdlenost od osy tere [cm] 23 Zvr

Clem experiment je: studium rozloen neutronovho pole v sestav simulace sestavy pomoc MCNPX porovnn zskanch vsledk Pro protony zskna slun systematika, nyn se pokusme namit i pro deuterony Vyhodnocen experimentu s deuterony 2,52 GeV prakticky hotovo, nyn simulace v MCNPX Dal experiment je plnovn na prosinec 2006 deuterony 4 GeV Dkuji za Va pozornost 24

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