Presentation on theme: "ILC Waveguide Production Industrialization Study Marc Ross AWLC14 May 15, 2014 Fermilab."— Presentation transcript:
ILC Waveguide Production Industrialization Study Marc Ross AWLC14 May 15, 2014 Fermilab
For low power RDR-like option, one klystron powers 1 ½ “rf units” or 4 ½ cryomodules. RF UNIT: 3 cryomodules (26 cavities) 6 windows (assuming ~2 MW capability) from 10 MW klystron variable power divider, pressurizable, 0-100%, phase stable pressure window variable H-hybrid, non-press., limited range 5 MW load Local Power Distribution System (LPDS) 9 cavities 4 cavities quad 4 cavities WR770 run original layout new layout Beam current lowered, 1/3 of klystrons eliminated
isolator w/ pickups bellows phase shifter cavity coupler variable power divider variable H-hybrids WR650 waveguide load loads pressure window POWER FLOW Detailed View of 13-cavity LPDS Unit Power to each ½ cryomodule is fully adjustable via VPD’s without affecting phases. Unused power can be dumped to the end load. Each cavity feed line has a phase shifter, isolator w/ bi-directional coupler, and flex guide NOTE: Variable H-hybrids will change phase as well as amplitude. Adjust this U-bend length to allow phase shifter range to compensate maximum amplitude variation.
Feeding 3 Stations with 2 Klystrons WR770 used for long runs. Extra 2 3 port network needed at klystron.
3-dB hybrid phase shifter C. Nantista Simplified 2 3 Waveguide Circuit Eliminates: 2 variable hybrids 3 loads 1 directional coupler Adds: 1 T Controls: 4 signals, 3 knobs 1 signal, 1 knob Also, allows power of far feed to be varied, rather than that of one of the local feeds. E-plane T E-bends from top: HE ps from below: HEHH E ~120’ WR770 Bend Counts Gallery:E - 6 H - 4 To LPDS*:E - 9 H – 3 * including E-jog E -15 H - 7
Standard Wavegide and Waveguide Components straight sections E-plane and H-plane bends T-splitters and magic Ts folded magic T Need pressurizable and non-pressurizable versions, for stress relief in upper waveguide runs and at cavities. semi-flex waveguides
Isolator and Loads Newer model includes forward and reflected pick-ups, eliminating the need for a separate bi-directional coupler (reflectometer)*. S.P.A. Ferrite, Ltd. (Russia) water cooled (2 types) P pk P av 2 MW10 kW 5 MW100 kW * But costed as separate components
SLAC Air-to-Air Pressure Window High power tested up to 3 MW, 1 ms. Ceramic Plug Pressure Window Bi-Directional Couplers (Reflectometers) May be largely eliminated by use of isolators with built-in pick-ups.
KEK Variable H-Hybrid (Power Divider) Variable H-hybrid geometry, sample field pattern and in-line port design modification. Moving the two suspended conductors in and out perturbs the relative phase between the two modes supported in the interior section while retaining match, resulting in a varying power split at the output ports. Sergey Kazakov
U-Bend Phase Shifter C. Nantista = 2 U-bend phase shifters + 2 folded magic-Ts SLAC Variable Power Divider (VPD) simulation field plot
Three kinds of parts: 1.Catalog items (cost basis from Mega/Furukawa; LC=0.95) (modification may be required for pressurization) 2.Loads / Circulators (cost basis SPA Ferrite – St. Petersburg; same LC) 3.SLAC / KEK in-house designs with integrated electro- mechanical actuator; based on WR650 hardware (cost basis from first article; same LC) TDR cost distribution for the above three kinds: 27% 29% 44% (including K-PDS) Industrial Study: 31% 28% 41% 14 ILC PDS: 2013.07.09 ILC - TB HLRF PDS Study (M. Ross)
The goal of this study is to investigate, quantify and develop an optimized technical scheme and production plan for the ILC HLRF-PDS. The plan should assume production of (25, 50, 100%) of the total Main Linac HLRF-PDS, over the course of 6 years with an additional 2 years allowed beforehand for facility development and proof, if needed. The study should study the best means of sharing the responsibility between industry and laboratories, and specify sub-assemblies that are prime candidates for subcontracting or further manufacturing optimization based on the quantities involved. The results of this study will include plant layouts, time planning for equipment and labor, work flow diagrams, and costs for the industrial components of plan estimated at 2013 prices and rates. Differences from current practice should be specified and supported, and opportunities for R&D to further increase the manufacturability noted. Industrial Cost Study of Americas Region Power Distribution Manufacturing for the ILC
Four possible Contract Options: – Line Item 1 – Full Production / Full System – Line Item 2 – Full, one Half and one Quarter Production / Full System – Line Item 3 – Full Production / Standard Components Only – Line Item 4 –Full, one Half and one Quarter Production/ Standard Components Only Will negotiate with contractor for cost / schedule. Hope for 2013.12 delivery. Limited resources: Plan for Marx Study too 17 Cost Study Options (after 2011 / 2012 TDR) 2013.07.09 ILC - TB HLRF PDS Study (M. Ross)
– Plant equipment requirements, including building, technical equipment, and layout of equipment in building. Costs, in 2013 dollars, to create such a facility, and time required to build, prepare, and prove the plant is ready for production. – A production plan, including labor and machine hours required. – Identification of the top 3 throughput bottlenecks in the plant, and the remedy for each. – Analysis of alternatives for each production step, and identification of the top 3 alternatives which should be pursued with R&D to have the greatest economic effect on the producton. Specific Report items (1):
– Identification of components or subcomponents that are prime candidates for subcontracting, including description of existing companies that could fulfill such roles or a description of an industry where such subcontracting should be pursued. – Identification of production process requirements or component tolerances which are particularly burdensome economically, and possible remedies for such. – Identification of the practices that are best suited to be conducted by a hub Laboratory, the reasoning for the choice, and a description of the technical criteria that would define such a handoff. Specific Report items (2)
Top 3 Processes: Machining Welding Testing (to be shared with hub – lab)
Development to be considered Integration of special components – Electromechanical devices, typ. SLAC / KEK designs Extrusion Casting Testing automation May provide 20 to 30% cost reduction
Summary Industrialization study of ‘non-high-tech’ components (PDS) completed March 2014 – US PDS industry is based in small-business Substantial cost-reduction (~1% of ILC total) practical with nominal R&D investment