NED and post-NED WUT involvement NED S.C. meeting Maciej Chorowski

The NED cryostat, construction phase at WUT Copper thermal shields Recuperative heat exchanger

Schemat kriostatu wykonanego w I-20 dla NED (Next European Dipole) w ramach VI PR

Optimization of thermal insulation of the NED cryostat

Thermal shields location optimization

Simplified geometry of the magnet FEM model and boundary conditions of the collar fin for the heat transfer simulations Input data: 1. Geometry of fin 2. Material properties of stainless steel and polyimide (density, specific heat and thermal conductivity) 3. Evolution of the coil temperature 4. Boundary conditions from two-volume model 5. Heat transfer coefficients

Example of numerical calculation a). Pictorial view of simplified geometry of numerical calculations with the selected points of the collar b) Evolution of the temperature in the fin Animation of evolution of temperature in the fin

Stability tests of QRL bellows, commissioning of the LHC

Reception tests of cryogenic systems Reception test of the LHC Cryogenic Distribution Line in sector 7-8 (sub-sectors A and B) Reception test of the LHC Cryogenic Distribution Line in sector WUT-CERN collaboration - performed in aims: ● to verify overal behaviour of the line at cryogenic temperatures; ● to measure heat inleaks to the circuts K and 50-80K

Reception tests of cryogenic systems Temperature evolutions of the Cryogenic Distribution Line main headers during the reception test in sector 8-1 Heat inleak 11-Dec8818 W 12-Dec9007 W 13-Dec8920 W Heat inleak with JR without JR 11-Dec633.3 W603.9 W 12-Dec632.9 W582.3 W 13-Dec635.1 W572.5 W Measured heat inleaks to circuit K Measured heat inleaks to circuit K

Reception tests of cryogenic systems The LHC Cryogenic Distribution Line during the reception tests in sector 8-1 Some members of WUT cryogenic grup in the LHC tunnel

Development of Ag alloys for BSCCO tape sheaths

Mechanical properties of designed alloys Ambient temperature – state after annealing at 830°C/10h

Mechanical properties of designed alloys 77K – state after annealing at 830°C/10h 

Analysis of oxygen diffusion and internal oxidation in BSCCO tape sheath

Thermal conductivity of sheath material – state after oxidation at 830°C/30h

Sheath manufacturing 75 mm

BSCCO/Ag/Ag BSCCO/Ag/Ag-Mg BSCCO/Ag/Ag-Sn BSCCO/Ag/Ag-Cu-Zr BSCCO/Ag/Ag-Cu-Ni BSCCO tapes manufacturing (IFW Dresden) 20 mm

WUT proposed involvement in WP WP1 mat. 20 keuro, personnel 12 keuro WP2 mat. 150 keuro, personnel 380 keuro WP3 mat. 20 keuro, personnel 48 keuro WP4 mat. 20 keuro, personnel 48 keuro WP5 mat 20 keuro, personnel 24 keuro

WUT proposed involvement 850 keuro 230 keuro mat 620 keuro personnel