Mitglied der Helmholtz-Gemeinschaft ESS cold and thermal Moderators Moderator & Reflector System Project Introduction Meeting | Yannick Beßler, Johannes Wolf, Petra Schumacher, Marc Hofmann, Jörg Wolters, Michael Butzek

Mitglied der Helmholtz-Gemeinschaft Updates current work Top cold Moderator from neutronic to real Modell Running weld tests (through welding) Weld test for Invar pipework Lower cold Moderator Manufacturing tests (th. Moderator disc Al6061-T6) Parameter study eBeam welding FEM simulation top cold Moderator Twister design optimization General questions (requirement ESS ) RCC-MRx??? Contents 29. Januar

Mitglied der Helmholtz-Gemeinschaft 29. Januar BF2.1 PDR ModelBF2.2 + holding structureBF2.3 + cover Full contact with FG and outer surface Necessary because Stress locally>84 MPa Including fluid guide structure (FG) From neutronic Modell to real Modell

Mitglied der Helmholtz-Gemeinschaft 29. Januar BF2.4 with real contact surface FG contact with cover (1,5 mm) shown in red are the real contact surfaces thickness FG 2mm / real contact mm thickness cover (weld area) 1.5 mm for eBeam power reduction in order to keep as much as possible T6 conditions run-in and out length (<10 mm) is necessary for the eBeam in order to reduce burn out risk From neutronic Modell to real Modell Reducing thickness of the cover Real contact

Mitglied der Helmholtz-Gemeinschaft 29. Januar Grooves for filler BF2.5 with filler (AlSi12) Because heat crack risk! Increasing of Si content is necessary (see weld report DUP) Welding from the inside with beam deflection (mirror system) From neutronic Modell to real Modell

Mitglied der Helmholtz-Gemeinschaft 29. Januar upper moderator pipework space for welding 40 mm space necessary for connecting the pipework

Mitglied der Helmholtz-Gemeinschaft 29. Januar Running weld tests (through welding)

Mitglied der Helmholtz-Gemeinschaft Through welding test 29. Januar Groove for filler (AlSi12) Beam power reduction

Mitglied der Helmholtz-Gemeinschaft Weld test for Invar pipework 29. Januar  Filler = base material! for low temperature applications

Mitglied der Helmholtz-Gemeinschaft Lower cold Moderator 29. Januar First simulation model ready!

Mitglied der Helmholtz-Gemeinschaft Manufacturing tests (th. Moderator disc Al6061-T6) 29. Januar There are no significant deformation during machining! at the used time-consuming and expensive machining type Background: the tempering process create additional inner stress. This stress could deform the structure during machining….

Mitglied der Helmholtz-Gemeinschaft 29. Januar

Mitglied der Helmholtz-Gemeinschaft Parameter study eBeam welding 29. Januar ,6 1,5 4 “Top plate” “Vessel”

Mitglied der Helmholtz-Gemeinschaft 29. Januar BF2.1 PDR Model BF2.2 + holding structureBF2.3 + cover FEM simulation top cold Moderator

Mitglied der Helmholtz-Gemeinschaft FEM simulation top cold Moderator 29. Januar BF2.4 with real contact surface

Mitglied der Helmholtz-Gemeinschaft  Twister handling and bearing  Twister shielding  LH2 pipework 29. Januar Potential for optimization

Mitglied der Helmholtz-Gemeinschaft 29. Januar Twister handlding and bearing additional sliding and handling device is required empty pit with radial bearing flange final alignment, shielding completely mounted

Mitglied der Helmholtz-Gemeinschaft 29. Januar Twister handling and bearing contact / spring insert axial bearing

Mitglied der Helmholtz-Gemeinschaft 29. Januar Twister handlding and bearing 6 radial bolts lifting device bayonet, gearing bubble level 4 lifting shafts

Mitglied der Helmholtz-Gemeinschaft 29. Januar Twister shielding 2,5 internal gap 30 internal step 30 external step 5 external gap milled shaft welded tubes shielding stone milled groove

Mitglied der Helmholtz-Gemeinschaft 29. Januar LH2 pipework interface plate, H 2 O, vacuum

Mitglied der Helmholtz-Gemeinschaft The MR Plugs are cooled by water and liquid hydrogen. Water and hydrogen will get activated when passing through. The MR Plugs shall be tight and confine the radioactive water and hydrogen inventory The MR Plugs will be leak controlled and monitored The total weight of the MR Plugs and MR Plugs Structure shall be 5,5 t or less p.H2O=4 bar / p.H2O.Design=5 bar SS / 304L (X2CrNi19-11) or better (<10dpa) Materials Handbook 316LN or 316L (<7,5dpa) MR Plug reliability 0,9997 and availability 0,99???  361 d/y??? A new set of top and bottom MR Plugs and MR Plugs Structure shall be available. General questions (requirement ESS ) 29. Januar

Mitglied der Helmholtz-Gemeinschaft basic material still is equivalent to 3.1 The main difference during manufacture stamped by extern (3.2) during manufacture stamped by internal authorized (3.1)  With 3.2 we lose a lot of important time! 3.2 certificate versus 3.1 certificate 29. Januar

Mitglied der Helmholtz-Gemeinschaft Heat Deposition File (top plug only) 29. Januar Top Plug RCC Modell real Modell comment Cell IDMaterialDensityVolumeErrorHeatingErrorHeat densityVolumeHeatingdeltaQ [-] [g/cm3][cm3] [W] [W/cm³][cm3][W] 80001Hydrogen0,07530,178,141519,350,302,87494,471417,03-102,31without pipes! 80002Cryo-Al2,73163,572,401655,310,6610,12193,301956,16300,86without pipes! 80003Void0,00323,194,190, Al2,70225,552,862120,670,859, Hydrogen0,07530,178,141499,370,302,83494,471398,40-100,97without pipes! 80006Cryo-Al2,73163,572,401148,750,467,02193,301357,54208,79without pipes! 80007Void0,00323,194,190, Al2,70225,552,861479,940,446, Water1,00565,737,924761,580,958,42 Plus Heat Vakuummantel (Teil) 80010Al2,7066,611,31490,400,347, Water1,00716,9910,573745,651,505, Al2,7093,501,71563,800,456, Water1,00716,9910,572216,290,663,09 real LH2/Valuum/Al/H2O 80014Al2,7093,501,71254,670,152, Water1,008362,0441, ,255,486, Al2,701589,628,277885,081,584, Water1,001168,8910,055842,580,585, Al2,70549,184,672727,400,554, Void0,0099,521,630,00 wo zu???? 80020Al2,70449,653,822096,470,634, Be+Water1, ,63239, ,7510,811, Al2,703343,7512,374747,700,951,42 realTop cold Moderators 6,13[kW]without pipes! RCC Mo. Top th, Modertor 86,90[kW] Vorsicht Reflektor/th Modertor gleiche Wand oben RCC Mo. Top Be Reflector 114,97[kW]

Mitglied der Helmholtz-Gemeinschaft Backup Design / operating Pressure…… 29. Januar

Mitglied der Helmholtz-Gemeinschaft RCC-MRx 29. Januar ??????????????????? RCC-MRx training in Jülich!