1. Technology Development MAP Friday Meeting Harold Kirk Brookhaven National Laboratory August 9, 2013

2. Outline TD Highlights L2 Summary reports Topical Report - Preliminary Considerations of Rapid-cycling HTS Magnets for Muon Accelerators, H. Piekarz, FNAL August 9, 2013Harold Kirk, BNL | MAP Friday Meeting2

3. Technology Development Highlights for July, 2013 RF Studies –Modular 805MHz Cavity continues to be on track for delivery by end of FY13 (SLAC, LBNL) –Beam welding of 500 MHz SRF cavities initiated by Research Instruments (Cornell) Targets –Studies for 1MW, 3GeV proton target (BNL, Princeton) Magnets –BISCCO 2212 coil tested at 4.2 0 K (FNAL) August 9, 2013Harold Kirk, BNL | MAP Friday Meeting3

4. Milestone Status (Progress)Resource Conflicts, Plan Changes and Issues Late Items Summary of Previous MonthQuarterly Plans Upcoming Work (Next Month) Monthly L2 Status Report - WBS: Presenter: Modular cavity (collaboration with SLAC) –Cavity fabrication in progress and will be delivered to Fermilab by end of FY13 –Test plan developed –Interface document between LBNL and FNAL ready 201 MHz MICE prototype cavity –MPO paperwork for couplers fab. between LBNL and FNAL in process –Started two RF coupler fabrication at LBNL Some material and parts received TiN-coating setup at LBNL Modular cavity –Fabrication at SLAC continues –Ready for PO of the Be plates –Bi-weekly meetings at SLAC to monitor/oversee fabrication progress –Face-to-face meeting once a month Support the single cavity installation at MTA, Fermilab MPO paperwork submitted Fabrication of 201-MHz coupler started at LBNL Cryostat (vacuum vessel) fabrication for MICE CC magnet continued at LBNL Continue the fabrication of the modular cavity at SLAC Support of the 201 MHz installation at MTA, Fermilab Oversee 201-MHz cavity coupler fabrication at LBNL TiN-coating of the coupler setup preparation at LBNL Oversee the CC cryostat fabrication at LBNL Continue the modular cavity fabrication EP of the remaining MICE cavities at LBNL Development of the modular cavity testing plan Data analysis of previous 805 MHz testing results MP simulation studies of the MICE cavity and coupler with external magnetic fields and explore other possible solutions Fabrication of two 201 MHz RF couplers for the first MICE cavity in preparation for the testing at MTA Support MTA RF testing programs PO of Be plates for the modular cavity Possible/potential delay in modular cavity fabrication due layoffs and etc.. at SLAC, and plan to meet at SLAC to have further discussions MICE magnets: SS and CC Oversight of the fabrication of RF couplers for MICE prototype cavity August 9, 2013 03 01: Normal Conducting RF Derun Li

5. MICE CC Cryostat Fabrication L2 Monthly Report: NCRF5 Cryostat front-plate with fixtures, gaskets welded on and all holes cut by water-jet machine Cryostat front-plate on a custom made press to flatten the plate before cutting and welding to the U-shape cryostat frame

6. Milestone Status (Progress)Resource Conflicts, Plan Changes and Issues Late Items Summary of Previous MonthQuarterly Plans Upcoming Work (Next Month) Monthly L2 Status Report - WBS: Presenter: Preliminary work toward welding the beam tubes onto the 500MHz cavity has been begun by Research Instruments Discussion with Plasma Coating of Connecticut has been imitated with the goal of eventually demonstrating the process of electroforming Cu onto Nb Continued preparations by Research Instruments toward welding of the 500 MHz SRF cavity Continued studies of electroforming Cu on Nb Simulations studies (with A. Bogacz, JLAB) on 325 MHz SRF cavities with varying beam tube diameters Testing of 500 MHz explosion-bonded cavities expected in late summer. Preparation of Cu on Nb electroformed 1.3GHz cavity by end of FY13 Research Instruments shipment of 500 MHz cavities. August 9, 2013 3.2 – Superconducting RF Don Hartill

7. Milestone Status (Progress)Resource Conflicts, Plan Changes and Issues Late Items Summary of Previous MonthQuarterly Plans Upcoming Work (Next Month) Monthly L2 Status Report - WBS: Presenter: Summary of Previous Month HTS (2212) Program - ). A 6-layer coil of Bi-2212 wound from 32 m Ag/Bi-2212 wire (244.5 turns, ID=33.40 mm, OD=48.1 mm; Length=57.80 mm) was tested at 4.2 K, 12 T. The coil realized >62% of short-sample I c (1 bar standard melt processed coils; leakage /de- densification by gas pressure) it failed mechanically during the test at the outside terminal ; a new coil with similar specifications has been wound and heat treated. HTS Magnets / ReBCO A paper and an oral presentation was made on MT23.The title of the paper was "High Field HTS Solenoid for a Muon Collider – Demonstrations, Challenges and Strategies" Started work on quench protection upgrade." Helical Solenoid (HCC) - A solid model in preparation for technical drawings was prepared; it is being reviewed and modifications will be implemented. Thermo/electro-/mechanical simulations are underway. We may reduce the size of the prototype to make it cheaper, since there is no plan to integrate this prototype with the RF. General Magnet Design- Conceptual design studies of HF Storage Ring magnets have resumed. The list of magnet target parameters for the matching sections, chromaticity correction areas and arc, including magnet apertures, magnetic lengths and nominal fields/gradients, has been generated Rapid Cycling Magnets / Conv – Optimizing the thickness of magnet laminations. The amount of insulation between laminations is fixed. Thinner laminations reduce eddy currents, but also reduce the packing fraction and the maximum magnetic field. Rapid Cycling Magnets / HTS -Presented a paper: “Design, Construction and Test Arrangement of a Fast-Cycling HTS Accelerator Magnet” with J. Blowers, S. Hays and V. Shiltsev at MT-23. Continued fabrication of magnet and power leads cryostat components at VMS Upcoming Work (Next Month) HTS (2212) Program – The second coil will be instrumented with long film heaters, small epoxy heaters, voltage taps, temperature sensors, acoustic emission sensors; its critical current and quench characteristics will be tested at 4.2 K up to 12 T; procurement of a high- isostatic pressure tube furnace HTS Magnets / ReBCO – Continue work on the advanced quench protection system for testing above solenoid at 4K Helical Solenoid (HCC) – Complete the simulation. Complete the model and produce the drawings necessary to start the manufacturing of the support structure General Magnet Design - Next steps are to identify a limited number of magnet types, generate for them magnetic cross-sections and field maps, and provide them for the radiation analysis Rapid Cycling Magnets / Conv – Rapid Cycling Magnets /HTS – Continue work on the splicing of HTS strands to power lead; complete fabrication of cryostat components for magnet and leads ; continue study of HTS- based rapid cycling magnet technology for Muon Accelerators HTS (2212 ) Program – Complete testing of 2 nd coil; procure and install high pressure tube furnance for coil heat treatment HTS Magnets/ReBCO – Complete the integration of the advanced quench protection system for testing solenoid at 4K (Q4). Helical Solenoid (HCC) – Finalize the model, produce drawings, begin manufacturing of support structure components General Magnet Design – Continue support of Collider Ring magnet design Rapid Cycling Magnets – HTS Perform splicing of HTS strands to copper blocks connecting with leads Fabricate cryostats for magnet and leads Continue study of HTS-based rapid cycling magnet technology for Muon Accelerator Write a APC Note on the feasibility of Muon Accelerator with HTS-based rapid-cycling magnet technology Rapid Cycling Magnets – Conv Develop procedure for transposed Cu strands; test and compare to calculations; continue studies to reduce losses [….] August 9, 2013 J. Tompkins Magnets – 03-03

8. Milestone Status (Progress)Resource Conflicts, Plan Changes and Issues Late Items Summary of Previous MonthQuarterly Plans Upcoming Work (Next Month) Monthly L2 Status Report - WBS: Presenter: Ding: Pion-production calculations for 3 GeV proton beam exhibit peculiarities that require clarifcation. Some progress here, but we are not yet ready to use 3-GeV particle production models as the basis for redisgn of the Target System Zhan: Level-set coding for ANSYS-FLUENT modeling of a free jet is nominally complete, but still has bugs hinted by comparison to volume-of-fluid and analytic computations, Extend target system conceptual design up to start of buncher (including chicane in decay/drift region). A big new effort, to continue over several quarters, is to evaluate Target-System options for staging scenarios, with initial emphasis on 3-GeV proton energy, 1-MW power. Reconsider a toroidal-horn option, as well as the (baseline) solenoid- capture option. Must validate particle production at 3 GeV before can proceed with staging studies. August 9 2013 03.04 Targets and Absorbers Kirk McDonald

9. Milestone Status (Progress)Resource Conflicts, Plan Changes and Issues Late Items Summary of Previous MonthQuarterly Plans Upcoming Work (Next Month) Monthly L2 Status Report - WBS: Presenter: 201-MHz vacuum RF: assembly work started 805-MHz vacuum RF: preparations on schedule Infrastructure – slipping: beamline upgrade, RF switch, station- 2 vacuum system Data analysis: HPRF beam test PRL submitted (B. Freemire, K. Yonehara, A. Tollestrup, M. Chung); all-season cavity data under review All-season cavity: disassembly, testing, reassembly (A. Moretti) Modular cavity: transfer frame prepared 201-MHz Single-Cavity Module: coupler fabrication started (A. DeMello); progress on instrumentation (L. Somaschini, D. Peterson, R. Pasquinelli, A. Moretti, P. Lane, P. Snopok); assembly started in Lab-6 (J. Gaynier, R. Pasquinelli) Dielectric-loaded HPRF reassembly, testing (Y. Ding, G. Flanagan, K. Yonehara, A. Moretti) 805-MHz all-season cavity: operation in B>3T? DL-HPRF cavity: retesting without/with dielectric rod Old pillbox cavity: install grid windows 201-MHz Single-Cavity module: instrumentation tests, machine tuner forks, start LLRF measurements Modular cavity: instrumentation and inspection setup Data analysis/publication –magnetic insulation –Be-Cu buttons –HPRF beam test Current program –All-season cavity in magnetic field B > 3T –Dielectric-loaded HPRF Next on the list –Grid windows on pillbox cavity –201-MHz Single-Cavity Module –New 805-MHz modular cavity Other –Beamline commissioning Single-Cavity Module assembly, installation Pillbox with grid windows, all-season cavity high-B run Beamline commissioning Mechanical support for RF program Electrical support for beamline upgrade August 9, 2013 3.5 – MuCool Test Area Yağmur Torun