f LARP magnet R&D program Giorgio Ambrosio TD/MSD FNAL Annual Program Review September 07 OUTLINE LARP goals FNAL contribution to LARP FNAL core-program support to LARP

f September 26, 20072G. Ambrosio - LARP magnet R&D program LARP goals “ The US LHC Accelerator Research Program enables U.S. accelerator specialists to take an active and important role in the LHC accelerator during its commissioning and operations, (…) and to be a major collaborator in LHC performance upgrades” (mission statement) Form FY08 Org Chart LARP magnet R&D (FNAL, BNL, LBNL) From start to FY07: focus on R&D From FY08: focus on “projectized” tasks

f September 26, 20073G. Ambrosio - LARP magnet R&D program LARP 2009 Milestone LARP has a very challenging milestone at the end of 2009 “Demonstrate that Nb 3 Sn magnets are a viable choice for an LHC IR upgrade”  Technological Quadrupoles (TQ) for performance reproducibility 1 m long, 90 mm aperture, G nom > 200 T/m, B coil > 12 T  Long Racetracks and quadrupoles (LQ) addressing long magnet issues LQs have same features of TQs 4 m long  High gradient quadrupoles (HQ) to explore performance limits 1 m long, 90+ mm aperture, G nom > 250 T/m, B coil > 15 T Milestone set in agreement with CERN

f September 26, 20074G. Ambrosio - LARP magnet R&D program FNAL contribution “Demonstrate that Nb 3 Sn magnets are a viable choice for an LHC IR upgrade”  Technological Quadrupoles (TQ) for performance reproducibility 1 m long, 90 mm aperture, G nom > 200 T/m, B coil > 12 T  Long Racetracks and quadrupoles (LQ) addressing long magnet issues LQs have same features of TQs 4 m long  High gradient quadrupoles (HQ) to explore performance limits 1 m long, 90+ mm aperture, G nom > 250 T/m, B coil > 15 T FNAL: Host lab for TQC magnets FNAL: TQS coil winding & curing TQS magnet test at 1.9K FNAL: L2 coordination FNAL: Design Study L2 coordination FNAL: LQ coil development and fabrication, LQ design with alignment, LQ test at 1.9K FNAL: Design Study task leader FNAL: Contribution to all WGs Strand study task leader Magnet test coordination leader Only lab for 1.9K magnet test  Long Mirror (LM) addressing long coil & magnet issues 2 and 4 m long, single cos  coil, B coil ~ 11 T FNAL core program task In support of LARP

f September 26, 20075G. Ambrosio - LARP magnet R&D program Technological Quadrupoles Two mechanical designs are under development Same coils / Aperture = 90 mm / Gradient > K 2 layers Filler Keys 4 pads Bladder Yoke Aluminum shell TQC: using collars Collar laminations from LHC-IR quads 1 st time applied to Nb 3 Sn coils TQS: using Al-shell Pre-loaded by bladders and keys 1 st time applied to shell-type coils FNAL: concept, design, development, coils fabric., assembly & test FNAL: coils fabric, test at 1.9K

f September 26, 20076G. Ambrosio - LARP magnet R&D program TQ Coil Fabrication TQ coil fabrication techn. is mostly based on FNAL technology Water Jet Machined Part Ceramic binder for insulation, water-jet technology for end-parts, reaction procedure with azimuthal and pole gaps, segmented tooling with “gentle-transfer” procedure, splice design and procedure All coils (29) for the 1 st magnet series have been wound and cured at FNAL, reacted and impregnated at LBNL; TQC02 coils completely fabr. at FNAL

f September 26, 20077G. Ambrosio - LARP magnet R&D program TQC Development New FEM analysis with Nb 3 Sn plasticity (1 st in the field) Four mechanical models have been assembled and tested in order to develop collaring procedure for Nb 3 Sn coils Stress in different longitudinal sections during keys insertion: uniform within +/- 5 MPa Elasticity  GPa Plasticity Stress strain plot showing plastic-elastic behavior of coil samples

f September 26, 20078G. Ambrosio - LARP magnet R&D program TQCs Status and Plans TQC01: –70% at 4.5K –85% at 1.9K –Damage during test TQC01b: Re-assembly with 2 TQS coils –85% ssl at 4.5 K –89% at 1.9 K –Reached G = 200 T/m  Constant improvement in understanding and process control TQE02: TQC with TQS02 coils –To be tested early Oct TQC01b training history TQS02 (with RRP 54/61 coils) assembled at LBNL, tested at FNAL, reached ~215 T/m at 4.5 K

f September 26, 20079G. Ambrosio - LARP magnet R&D program Plan for Length Scale-Up LENGTH SCALE-UP CHALLENGE: No Nb 3 Sn accelerator magnet longer than 1m has ever been built LARP should make a successful 4m long quadrupole by end of 09 FNAL Long Mirrors FNAL LARP Long Quadrupoles FNAL, LBNL, BNL LARP LQ Design Study LARP Long Racetracks BNL, LBNL, FNAL LARP TQs

f September 26, G. Ambrosio - LARP magnet R&D program LARP Long Racetrack The goals of the Long Racetrack (LR) are: to fabricate and test long Nb 3 Sn racetrack coils Performed at BNL to test an Al-shell-based supporting structure Developed at LBNL (preloaded using bladders and keys) FNAL contributions: L2 coordination of Supporting R&D (G. Ambrosio) FNAL scientists and engineers are part of LR working group Technology transfer from the LR to the LQ, Insulation development, Practice coil insulation Coil layout: two flat double-layer racetrack coils Technology developed at LBNL, modified at FNAL, successfully transferred to BNL From 0.3 m to 3.6 m Results: - I q > 90% ssl - Shell should..be segmented

f September 26, G. Ambrosio - LARP magnet R&D program FNAL Long Mirror FNAL “Mirror magnet” is a cos-theta dipole where a coil is substituted by iron blocks Successful 2m mirror magnet (same performance of 1m model) 4m mirror magnet will be tested in November Front view of mirror magnet ADVANTAGES - Larger probability of success of the LQ by: Several features complementary to LRs  Diversity & Risk mitigation - conductor, keystoned cable, insulation, coil shape, use of wedges, mechanical structure, Start as soon as possible development and qualification of tooling and infrastructure for long magnets at FNAL (New 6-m long oven, …) LM02 quench history at 4.5K compared with 1m model SSL

f September 26, G. Ambrosio - LARP magnet R&D program LQ plans Present plan (still under development): LQ project leadership – FNAL LQ coil winding & curing – FNAL LQ coil reaction & impregnation – FNAL & BNL LQ support structure with shell – LBNL & BNL LQ support structure with coil alignment – FNAL LQ quench protection – FNAL & LBNL & BNL LQ magnet tests – FNAL & BNL

f September 26, G. Ambrosio - LARP magnet R&D program Other parts of LARP magnet R&D FNAL has a major role in Design Studies: –LARP L2 coordinator (Zlobin) –LARP Long Quadrupole DS task leader (Ambrosio) –Tasks: High Grad Quad, IR Study, Radiation deposition, Cryogenics, Heat transfer … also in Material R&D: –Strand R&D task leader (Barzi) –Tests of strands and cables in different conditions (pressure, field, temperatures) … also in Magnet testing: –LARP magnet integration coordination –Only LARP lab with 1.9K capability –Developed low-noise high-frequency spike detection system Tests of SQ02 (small quadrupole with racetrack coils) fabricated at LBNL

f September 26, G. Ambrosio - LARP magnet R&D program Budget and Resources FY07 resources: 5 physicists 8 engineers 2 designers 9 technicians + support. staff (~21 FTEs) The LARP budget is almost constant (+10%) In FY08 the Core Program budget is decreasing because the Long Mirror is phasing down (  low M&S, lower SWF); some FTEs to other magnet programs In FY09 the Core Program budget is back to $4.6M in preparation for IRUP The continuity of the core program allows for continued growth in expertise and infrastructure  we are able to respond quickly to the needs of the field FY06FY07FY08FY09 LARP magnet R&D$1.9M $2.0M$2.1M FNAL magnet R&D$4.7M $3.6M$4.6M Budget with G&A

f September 26, G. Ambrosio - LARP magnet R&D program Conclusions LARP is starting an exciting and challenging phase –Goal: demonstrate that Nb 3 Sn magnets are viable option for an LHC IR upgrade FNAL is supporting all LARP goals –With key contributions in all tasks technical and managerial level –With unique contributions in several tasks such as 1.9K magnet test capability, long coil winding and curing, coil collaring, conductor characterization, … –Has achieved important results (TQC01b) FNAL is providing further support by core-program –Long Mirror magnets, Conductor R&D

f September 26, G. Ambrosio - LARP magnet R&D program LARP Mission Statement The US LHC Accelerator Research Program enables U.S. accelerator specialists to take an active and important role in the LHC accelerator during its commissioning and operations, and to be a major collaborator in LHC performance upgrades. In particular, LARP will support U.S. institutions in LHC commissioning activities and accelerator science, accelerator instrumentation and diagnostics, and superconducting magnet R&D to help bring the LHC on and up to luminosity quickly, to help establish robust operation, and to improve and upgrade LHC performance. Furthermore, the work we do will be at the technological frontier and will thereby improve the capabilities of the U.S. accelerator community in accelerator science and technology to more effectively operate our domestic accelerators and to position the U.S. to be able to lead in the development of the next generation of high-energy colliders.

f September 26, G. Ambrosio - LARP magnet R&D program LARP FY07 Org Chart FY07 Org Chart

f September 26, G. Ambrosio - LARP magnet R&D program LARP FY08 Org Chart FY08 Org Chart

f September 26, G. Ambrosio - LARP magnet R&D program SC Magnet R&D at Fermilab Fermilab has a long (~30 years) and successful history of SC accelerator magnet R&D –Tevatron, Low Beta Quads, SSC dipoles, VLHC superferric transmission-line, LHC IR Quads, HFM dipoles This is because SC magnets are an enabling technology for high energy accelerators “The tremendous accomplishments of these last two years confirm the broad strength of the group” “In many areas basic elements of the Fermilab program, such as tests of material, establishment of fabrication processes, design and fabrication of tooling and fixtures, are essential to LARP success” Jan 06 - High Field Magnet review (L. Rossi, chair)