25X1 CENTRAL 1'f'1fflfMAT 10 N er NO COUNTRY USSR AbkbJl zakaya ASSR OATE OISTR SUBJECT The Develo nt of an Ultracentr at the Nuclear Inst1 tute of Man f'red von Ardenne in Sinop Ne OF 10 J'l lM 1955 9 PLACE ACQUIRED 25X1 DATE OF INFO TO NO H1' CONTIJNS NfORMAfiOtll AFFf CllNO THE HAtlOt AL DEf'iNSt to sn u s WlHHN lHt' IUAUIMG Of' TIH t 16 S UTiONS 711 ITS Ttl AHSIUSSION OR RIVEL• AHO 194 Of' TH £ U $ COD $ AUIMD O A'rl U4 OF lTS t KTl HT S TO 1 PJIOKll l'IJP 8Y l tlll tJj 25X1 25X1 · ___J ' -O-N-1''·•I JL_ 25X1 JGATION 25X1 --- CC App si2io1 f 11A r· rroi1o og810A006-6 0-0-6 2 ·0 00 5- 25 1 x I A proved For Release 10 · CIA-RDP80-00810A006600620005-9 CLASSWICATION' ' CONFlDENTLl L CON'l'ROL - U Or'H'ICIALS ONLY ·2sx1 --2sx1 COUNTRY---u __s s__ R_ _ _ _ _ _ _ _ _ _ _ _ _ _ REPORT TOPIC ______'I_'h_e_'_D_e_v_e_•l_o_p_n_1e_•n_t_o_f_an __u_1_t_r_a _c_e_n_t_r_i_f_ug_e_a_t_t_h_e_N_u_c_1_ea_•r_ _1r_1_s_t_it_u_te_ _ _ _ _ _ _ __ Manfred von Ardenn0 in Sinop 25X1 JLACE OBTAINED_ _ EVALUATION_ 25X1 DATE OF CONTENT ____ DATE PREPARED 14 January 1955 DATE OBTAINED REFERENCES _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ 25X1 PAGES _ _ _ 2_ _ NCLOSURES NO TYPE _ _ _ __ REMARKS----------''----------- ------------1 - I This is UNEVALUATED• ------------Information · 25X1 ' ·' 1 Ultracentrifuges ver·e developed by Dr Steenbeck at Department 3 the mechanical department of the nuclear jnstitute in Sinop In ud li Uon to his nominal deputy Dr 'rratLarrn r fnu Stoenbwk had Dr Steudel frm as a practical deputy The latter controlled the development of the ul tr·acenl tifuge which he continued after Kaibl ingl r left in 1947 Prior to 19 47 two development stages were appar· mt ' l'hese were based on mechanical metallurgical probUms with the rpm figures being the essential development problem 2 During §tage A of the development KaH linger was ordered to consLruct the rotor unit of several cover layers of metal foil strips On a lathe he wound the foils at a slanting angle to the axle of ra tation around a core which was to be removed afterwards During winding process the J ayers were also soldered The finished winding was 0 2 mm thick The lids were also produced as foil packages 1 mder pressure and were provided with canulas soldered into the lid All rotor units even if the thickness of their wal s varied had an external diameter of 50 mm and · a length of 400 mm The first rotor units constructed were driven by means of specially constructed gears powered by standard engines operating at about 5 000 rpm The maximum speed obtained was 80 000 rpm which was about the limit the gears could stand Since the heat produced by the rpm rating was too high Uw following listed foil materials were tried in succession eopper brass nickel aluminum chromium silver gold and others 100 000 rpm tmined out to be the critical speed 'l'he development program therefore requested 150 000 rpm pa rtly in order to overcome the critical figure and also to obtain a fjgure high enough to effect isotope separation Since these fi$ures were not obtained with the foil rotors an entirely dif·ferent system was adopted for the production of rotor uni ts C-0-N-li'-I-D-E-N-T-I-A- 25X1 _ _ _ _ flONli'TDW N'l'HTJCON'I'TIOL lilllllllllllllllllllllllllllllillllll_ _ _ _ U S 'FIGIALS ONLY Approved For Release 2008 01 10 CIA-RDP80-00810A006600620005-9 Approvecj For Release 2008 01 10 · CIA-RDP80-00810A00660062000b-9 C-0-N-F-I-D-ILl N-T-I-A--1 25X1 CONl•'IDENTIAL CON'l1 RO' - U S Ol FlCIALS ONLY 25X1 - 2 - 3 · Dr Ziegler fnu dev loped a special aluminum alloy of which was unknown Kaiblinger was given an ingot of this material from which he turned the maw rotor 400 mm long 50 mm external diameter and 47 mm internal diameter and subsequently 1 5 mm thick The blank was then machined in a cold process by a specially manufactured tube rolling mill and finally reinforced The apertur 33 were provided with screw lids into which standard oanula needles with a external diameter of 2 5 n m and an enforced upper pa rt were inserted The internal walls of the rotor were lined wl th permanent magnets In long lasting processes Kaiblinger e radually eliminated all unbalances of tho rotor using machinery urni instruments of the precision rnecha nical workshop of Ingenieur Klein fnu The construction was delayed by the tlme-consurnjng prdlduction of needle bearings by Kaiblinger Sleeve bearings wer fitted a t three places of«acl-l each of the two capillary tubes-type canulee The end of a ca nula was bedded a gainst the front part and the side of the tube and the stronger end ag ainst the front ' Vhi te metal was used as bear· ng material The entire bearing system was cooled by chambers of liquid air The rotor was driven asynchronously by a high frel1uency transmitted via a continuo s winding wrapped around the toter chamber and no loll 1' er by a synchronous motor Two imp oved models were constructed with a primary rpm rating of 115 000 which was increased to 150 000 rpm and finally reached 150 000 rpm without any defects ¾ - _ In fddition to the orit 'ina T a esTgn --or the-uitra feriun-ugewhTon included a a impl e hollow rotor unit with one upper and one lower capjllary tube other models were designed with additional lea d-ina which were specially heat insulated under glass Thermal control equipment for the thermodiffusion of the gas stream within the centrifuge was also installed The final result however was obtained only by an improved cooling system involving air a nd water 5 25X1 25X1 In 194 7 the results obtained in the diffusion of UF6 were 2 percent Kaiblinger had fre luently discussed this figure with Dr Steudel but was not quite sure whether the latter had given this figure or not Steudel also repeatedly mentioned during those conversations that it could not actually be expected that the centrifuge system would ever be applied on a n industrial level -------·-·---- IComment For a table of organization a nd list of persom1el employed at the nuclear· institute of Manfred von Ardenne in Sinop status 1946 194 7 see Annex 25X1 C-0-N-F I-D-E-N-T-I-A-L - CONFIDE1ITIAL CONTH0L 25X1 ''' --------- - ··---·· -·-· U S OFFICIALS ORLY Approved For Release 2008 01 10 CIA-RDP80-00810A006600620005-9 Approved For Release 2008 01 10 · CIA-RDP80-00810A006600620005·9 r Cl ' N -1 -Y n-F -i ll'-1-A- L 25X1 CONF'IDfilTTL L CON TROL - U S Ot'' ICIALS ONLY -3- 25X1 ' - 'bX1 Annex '-- - - ' -' n _ in L J Quf _ F ului - - ' -N x T ie Sinop institute included three departments Manfred von Ardenne was chief of the entire institut t and also o f Departmel t I Department 1 Department of Electro Phyeios Jftanfred von Ardenne Dor artment 2 Department of Chemistry Professor Thiessen fnu Department 3 Mechanical Department Professor Steenbaok fnu These three departments includec the following personnel 1 Ernct Richard Api ch criief of the electric workshop Department 1 Alexander Bergengruen t meral administration Bergemgruen was Ardenne 1 s father-in-law Erwin Ali' red Ile ck er g aes blower Department 3 Becker also constructed the glass temperatm -e caps for the switching unit of the C91' 1tri#uges Dr Karl Bernhard Bhemist D prtment 2 Dr 1rnst Busse chemist Department 2 Dr Delvendahl fnu meteorologist and mathematician Au0'1JS t Deutsch mechanical engineer Department Kurt Flieener blaok ami th Department 3 3 constructed a circular spinning frame for laboratory material at Sinop He is allegedly in Ilinskaya at the present t ime Gustav F1iegner K Fliegner's eleotricia n Department 1 son Hermann-Fritz Florek laboratory assistant of Dr Steenbeck Department 3 Heinz Ernst Froehlich engineer Department 1 in House D w· rking in the field of' magnets Dr Guenter Fuchs physicist Department 1 CONFIDENTiaL CON'I'ROL - U S OFFICIALS ONLY C-0-N- B' -I-D-J -N-T- I-A-L Approved For Release 2008 01 10 • CIA-RDP80-00810A006600620005-9 ' Approved For Release 2008 01 _10 · CIA-RDP80-00810A006600620005-9 C-0-N-F- I W-l•T I-A-L 25X1 - U S QFFI8TAT fl ONLYX 25X1 Annex - 2 - Gaedicke Duo1rneJ dorf chief mechanic Department 2 1 constructed with assistants all chemical testing g_uipment for Professor Thiessen alectrician for Apitzsoh Department 1 Iermann Geri from Pr-eH urg Breisgau ' Verner Goldbach laboratory assistant Department 3 working for a Soviet Pro fessor of 3teenbeck 1 s group · Helmut Hepp graduate engineer physicist Department 1 Kurt Heppner chemist laboratory assistant Department 2 Gerhard Roenovl laboratory assistant Department Ferdinand Kafka 1 ngineer Department 1 Sioi fried 2rec1a1on mechanic working in a n independent department equipped with a complete workshop brought from Berlin Kil ein 2 assistant Department 2 Kretzig fnu designing office Department 2 Krueger fnu chief electro mechanic Depar ments land 3 • ong other equipment he conatructed electric measuring instruments for the development of the centrifuges Rpms were measured electrically Gerda Langadorf at irst second secretary of Ardenne later institute librarian Endl Lonmz glass blower constructed glass caps for the lead-ins to the centrifuge$ Jlau1er fnu Material supply and administrat on ' Vladimir h aydel e raduate engineer plJysicist Department l FrHz Mainharclt mechanic in Sille's group Dr curt Meloun j hysicist Department I Jr bc I'l1ard Melchior mathematician now in Ilinskaya Dr r ott 1 w rrl l 1ue1ler high frequency physicist Department 1 Constructed mains for the mass spectrographs and was allegedly involved in research aotiti ties of his own Worked previously at the Lorenz Firm in East-Berlin CONF'IDEJ 'TIAL CONTROL - U S OFPICilLLS ONLY C-0-N-F-I-D-E-N-T-I-A-L - 25X1 Approved For Release 2008 01 10 • CIA-RDP80-00810A006600620005-9 Approved For Release 2008 01 10 CIA-RDP80-00810A0066006200Df -9 2SX1 0 F'ICBLS ONLY 25X1 25X1 Annex -5- - 3 - eureuther fnu 6raduate engineer hysioist Department 1 fi'ranz Heinrich Pottmeier laboratory assista nt _Department 2 Dr· Gerd Pra c toriue expert in high voltage Department 1 and also expert for elactron photography Dr Herberg physicist Departmei'-it l Rei bedanz precision mechanic of Klein 1 e group Hans Artur ili ch te r Kurt Rintelen laboratory assistant Depattment 2 Hans 'ritz Soh1esing laboratory assistant Depar ment 3 Hermann Schmahl engineer Department 1 forst Schroeder laboratory assistant D partmtnt 2 Schrottke seri fnu laboratory assistant Departmoot 1 Dr mod Llrs Schrottke fnu second secretary of Ardenne SchDlze fnu mechanic in Sil le 1 1l isroup Karl Heinz Sille engineer had his own group for the installation and teohriical c pntr l of all workshops Walter Sommerfeldt engineer Department 1 ' olfgltng Socke precision mechanic in Klein 1 a group Dr working under Steenbeck 1 a control as' sanager of all departments of physics among other activities on the construction of the centrifuges ' Eberhard Steudel I liss Stricpling laboratory assistant Department 2 Else Suchland first secretary of llrdenne Erwin Suckow engineer Department 1 in House D workine in the field of magnets was repatriated to Meddersheim near Sobernheim Dr Robert Trattner Austrian formal deputy of Steenbeck Department 3 Gustav Treff mechanic Department 3 Ludwig 'Yetzlar electro mechanic Department 3 his work included the winding of the centrifuges CONFIDErl'J'IAL CONTROL - U S O 'FICIALS ONLY J -Q-Ji -L--I-D-E- N-T-I-A-L I Approved For Release 2008 01 10 • CIA-RDP80-00810A006600620005-9 25X1 Approved P-or Re leas 2 081 1 10 CIA-RDPS0-0081 OAOOG6006 001 5 9 W X1 - r OO li'IDF N l'I A t CONTROL - U S 01 · CilU S OVl Y' 2sx I 6 j -6- student Department 2 V Lc tor Wi-nk'ler ethnic Gi from YugosJ a via Dr 1ernar Wittstadt oheill ist Dtrp tmont' 2HT1ode Zab l a as1e1lant tlepartmant G111tn er Zawa dil l r ·s beude l'a ll l shtll J t- DepW'l'tnient 3 metallureist De'part111ei 1 wo rkea l l· Z iegI • ha rd'IJli ne Ip rimen1i was t anllferred his where outs re on unknown gxaduate eng tneer 0Jie111ieiet 1 ll9partm-ent 2 Dr Gerhard Zi ip1t mecha n ic s l _ph yelobt Dapai -tm nt on _prelJ miqary uperimeiit a fo r t'be denl1 1jmen t of tile oen- ciruge 3 rld other fields worlred i C-9-N l'-I-D- -N- -I A -L - OOIWIDENTIM QON'l lBOL - U S OFFICULS WLY ·i Approve·d For Releas·e 2ooa101110 · CIA-RDP80-0081QA00660C li62000S 9 25-X1 Approved For Release 2008 01 10 • CIA- RDP80-0081 0A006600620005-9 25X1 25X 1 25 X1 - 'rSee n ext pa ge I I 1 I r ··-' · __j ·0 f ' 0 2' 1 •--··- -_ C- 0 -N-F - I --D-E - N-T - I -A-L 25X1 Approved For Release 2008 01 10 CI A-RDP80-00810A006600620005-9 Approved For Release 2008 01 10 · CIA-RDP80-00810A006E50062000 i-9 25X1 U S OFFICIALS ONLY Annex' 25X1 25X1 Logend Diagr lJJ m of the Ultracentrifuge s ¢ta le 1 to 2 and 2 to 1 A Cross section scale 1 to 2 3 Longitudinal section scale l to 2 C Lower needle bearing- scale 2 to l 1 Rotor unit external diameter 50 mm internal diameter 47 mm walls 1 5 mm thick lenr th 400 mm For the preliminary experiments tha unit was manufactured of wound metal foils with walls 0 2 mm thick Screwed in lid 2 Needle canuJa external diaoeLer 2 5 mm 4 Socket for nccdl e bearing 5 Permanent magnets steel plates I 6 Continuous field winding around outer coat 7 Inforced canula O'Ter the bedd ing lJ Bearing material _Qpprational procedure The rotor tube functioned as motqr armature The continuous field winding around the outer coat was' fed by a high frequency transmitter No additional information was obt ined Lead-in and discharge was effected through the ca nula i In 4ddition to the product of inertia ther1nal diffusion was to be effec ed C-0-N-F-I P J -N-T-I-A-L 25X1 I OONPim N'I'IAL GOlJTRClL U S OJ 'PICIALS ONLY I I I I Approved For Release 2008 01 10 CIA-RDPS0-0081 0A006600620005-9