FAIR Cryogenic System Marion Kauschke CSCY GSI Helmholtzzentrum

FAIR Cryogenic System Marion Kauschke CSCY GSI Helmholtzzentrum für Schwerionenforschung Gmb. H Planckstraße 1 64291 Darmstadt, Germany 4 June 2015

Outline • • • Introduction Cryogenic topology FAIR machines • SIS 100 • Super. FRS Refrigerator Summary & Outlook HEPTech 4 -5 June 2015

FAIR – Facility for Antiproton and Ion Research GSI-Today SIS 100/300 SIS UNILAC • Protons to Uran • max 1 Ge. V/u Uran and 2 Gev/u for Neon GSI in futue / FAIR ESR HESR • Rare isotopic beams Super FRS 100 m • Anti protons • Higher Beam Current • At higher energies RESR CR NESR GSI Helmholtzzentrum für Schwerionenforschung Gmb. H founded 1969 90 % German Federal Government 1350 employees 2 superconducting detectors: ~300 W@4. 4 K FAIR Gmb. H founded 2010 9 countries signed ~75 % stake holder GSI large superconducting facility: ~30 k. W@4. 4 K HEPTech 4 -5 June 2015

FAIR – machines and experiments APPA SIS 18 HEDge. HOB SIS 100 HESR (FZJ) CR (BINP) Super-FRS CBM Nu. STAR HEPTech 4 -5 June 2015 4

Cryogenic topology SIS 100 (SIS 300) CRYO plant: CRYO 2 CBM common compressor station Super. FRS Cool down/ Warm up Unit (Panda) APPA CWU R 3 B no cavities HEPTech 4 -5 June 2015

FAIR – SIS 100 - Magnets. . proton. . . triangular iron dominated magnet design: dipole: 1. 9 T, 4 T/s @ 1 Hz; 109 pcs. , stat. load: 2 W; dyn. load: 0. . . 9. . . 50 W quadrupole module: 27 T/m; 84 pcs. , stat. load: 3 W; dyn. load: 0. . . 5. . . 25 W Single cable (13 k. A) Bus bars helium Cu. Ni tube superconductor Ni. Cr wire kapton foil glass fiber tape supply. return Details: FAIR – Technical Design Report, July 08 T-s diagram for helium flow in coil HEPTech 4 -5 June 2015

FAIR – SIS 100 - supply system HEPTech 4 -5 June 2015

FAIR – SIS 100 - supply system Vacuum external envelope Cross section of the BPL 9 m He return shield Heat radiation shield Vacuum external envelope Radiation shield He supply VC He supply magnets He return magnets + VC Process pipes and busbars 4 busbars pairs Courtesy of Maciej Chorowski HEPTech 4 -5 June 2015

FAIR – Super. FRS- Magnets iron dominated magnet design: dipole: 0. 15 - 1. 6 T; quadrupole: 1 -10 T/m; 21 pcs. 80 pcs. multiplet: Total mass: > 50 t cold mass: ~ 37 t current: ~250 A Helium inventory: ~ 1500 l heat load: ~ 30 W no ramping 31 pcs. 7 m up to 9 pair of current leads Details: FAIR – Technical Design Report, July 08 HEPTech 4 -5 June 2015

Challenges for the cryogenic supply of SIS 100 and Super. FRS Stand: Jan 15 (Wr. UT values) SIS 100 Super. FRS 4 K equivalent Reference cycles: Proton cycle, HI cycle (long extraction), triangular cycle mixed cycles will cover the full range ~3000 W Transfer line DB 3 <-> DB 2 300 W LEB 700 W Sum 4000 W Cold mass: 400 t Cold mass: 1300 t Helium inventory: 1. 3 t Helium inventory: 5. 9 t HEPTech 4 -5 June 2015

FAIR Refrigerator – CRYO 2 planed heat capacity for first cryo plant@4. 4 K approx. 25 k. W including: • additional chillers for the cooling circuit of the compressed helium gas and • pre-cooling by additional 80 K circuit. (LN 2; Brayton machine) Refrigeration at 4. 4 K Shield 50 -80 K Hybrid current leads Resistive current leads E 1 – R 1 without additional cooling: approx. 23 k. W Maximum Liquefier load with S 1 mode and S 2 19 k. W 8 k. W E 2 – R 2 E 2 – R 5 30 k. W 25 g/s 20 k. W 25 g/s E 1 – R 4 15 g/s 40 g/s For the stand-by operation to modes are possible: • the valves of the turbines are partly closed. => the energy consumption will near to maximum load; adaptation time to load changes very short. • reduction of the compressor flow => the energy consumption will be reduced; adaptation time to changes > 1 h. HEPTech 4 -5 June 2015

FAIR Refrigerator – CWU Interaction Normal operation CWU Cool-down 300 K-80 K CWU Cool-down 80 -4 K CWU Warm-up HEPTech 4 -5 June 2015

Series Test Facilities, Linde KT • 700 W@4. 4 K; 6 g/s; 2000 W@50 K • Ready for magnet testing • SIS 100 dipoles, quadrupoles and Super. FRS Magnets can be tested HEPTech 4 -5 June 2015

He. Su in Operation • Liquefaction rate ~ 20+ l/h • 3000 l LHe storage • Commissioning (SAT) done HEPTech 4 -5 June 2015

Summary & Outlook 2015 2016 2017 2018 2019 2020. significant steps in cryogenic infrastructure for testing components foundation finished: 1500 concrete pillars start of construction for buildings next year start of series magnet testing in 2016 Construction site in June 14 (by H. Stöcker) Building ready first experiments in 2021 HEPTech 4 -5 June 2015