FAIR Cryogenic System Holger Kollmus GSI Helmholtzzentrum fr

FAIR Cryogenic System Holger Kollmus GSI Helmholtzzentrum für Schwerionenforschung Gmb. H Planckstraße 1 64291 Darmstadt, Germany

Outline • • • Introduction Cryogenic topology FAIR machines • SIS 100 • Super. FRS Refrigerator Summary & Outlook Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona

FAIR – Facility for Antiproton and Ion Research GSI-Today • Protons to Uranium SIS 100/300 and 2 Gev/u for Neon SIS UNILAC • max 1 Ge. V/u Uranium GSI in future / FAIR ESR • Rare isotopic beams HESR 100 m • Anti protons Super FRS • Higher Beam Current • At higher energies RESR GSI Helmholtzzentrum CR NESR 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: ~25 k. W@4. 4 K Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona

FAIR – machines and experiments APPA SIS 18 HEDge. HOB SIS 100 HESR (FZJ) CR (BINP) Super-FRS CBM Nu. STAR Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona 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 Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona

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 Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona

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 Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona

FAIR – SIS 100 - supply system Talk by Th. Eisel Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona

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 Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona

Refrigerator Options with 25 k. W Overall Capacity • Planned cooling capacity for first cryo plant approx. 25 k. W@4. 4 K • Pre-cooling by additional 80 K circuit. (LN 2; Brayton machine) • Without additional cooling: approx. 23 k. W * partly Building 18 is requested in any case Holger 4 -5 Kollmus, CSCY HEPTech June 2015

FAIR Cryo 2 – CWU Interaction Normal operation CWU Cool-down 300 K-80 K CWU Cool-down 80 -4 K CWU Warm-up Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona

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 Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona

He. Su in Operation • Liquefaction rate ~ 20+ l/h • 3000 l LHe storage • Commissioning (SAT) done Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona

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 Holger Kollmus - CEC/ICMC 2015, Tucson, Arizona