PIP Update Aug 15 th 2012. Agenda Summary Update – Current Activities Dennis Barak / Kiyomi Seiya - High-Power Ferrite Testing Ryan Crawford - Linac and.

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Presentation transcript:

PIP Update Aug 15 th 2012

Agenda Summary Update – Current Activities Dennis Barak / Kiyomi Seiya - High-Power Ferrite Testing Ryan Crawford - Linac and Booster Transformers Salah Chaurize/ Vladimir Sidorov- L13 Absorber

Update General Info Current Work – Booster RF cavity 5 – Tuners installed then removed due to spacing issues….. Aug 10 Log Entry – Linac Transformer – Slides – Booster Transformer – Could we order another one? – LCW – Work continues still on schedule? – RFQ – beam tests continue finishing up – meeting today to set schedule – REPORT for High Power – Preparing for submission/Meeting today to review – High Power Ferrite Testing - Progress - – Booster Absorber – Progress – see slides – Linac Modulator – Testing at 7 for DTI continuing – any comments – Modulator – SLAC / Continental will be here next week to present their plans – Booster Modulators – Aug. schedule says we should see half of Mods completed? – Cogging – working on hardware/frontend/code – Booster penetrations will be filled again soon – all cables pulled (SS) ? – RLS – Elmie Comments Shutdown - comments (Fernanda, Todd, Mary) PIP PMG August 2 nd – Went well – a lot of details – TOPICPresenterTimeDescription – Introduction/ManagementPellico20 MinutesHistory, goals and guidelines – LinacFernanda20 MinutesLinac (tasks, milestones/goals) – BoosterKeith20 MinutesBooster (tasks, milestones/ goals) – RLS/Project ControlsElmie15 MinutesRLS schedule – base line/update(s) – Budget ConstraintsBob15 MinutesBudget and targeted goals issu es

Upcoming Schedule/Events Linac HLRF meeting today to review JS report – Next Week will try to meet with management to present RFQ Injector looks to be ready – Meeting today to summarize recent studies – Approve Installation – Discuss near term plans Linac Modulator – Vendors visit next week to discuss their plans PIP Quarterly report over due – Turn in on Friday? Linac Transformer installation schedule completed

FY12 Budget (~84% of FY) Look at Task funds – make sure you as managers know what the balance is!! Ferrites Booster 2 nd Transformer Vacuum Components Klystron

Last week No bias current Resonant Frequency: MHz Forward power: 5.04 kW Reverse power: 729 W Cavity voltage: V (p-p) Q = 64.6 at ~5 kW No high loss effect observed John Reid, Kiyomi Seiya, and Dennis Barak

Plan of attack Try another Toshiba core (these are the lossiest cores that we have) Make high power measurements of the fixture without any cores inserted – Including Q Introduce a bias current and make high power measurements Try a new core? John Reid, Kiyomi Seiya, Dennis Barak

TOS 0979 core No bias current The high loss effect was not observed even with 6.57 kW of forward power. Q measurements – Q = 67.4 at about 5 kW (SG set to +7.1 dBm) – Q = 87.5 at lower power (SG set to 0 dBm) – Very similar to the other Toshiba core (TOS 9070) John Reid, Kiyomi Seiya, Dennis Barak

Measurements of unloaded structure Forward power: 4 kW Reverse power: 389 W Resonant frequency: MHz Cavity voltage: V Q measurements – Q = 669 (SG set to +7.1 dBm) – Q = (SG set to 0 dBm) – Q did not change too drastically compared to the loaded structure John Reid, Kiyomi Seiya, Dennis Barak

Try biasing the core Slowly increased the bias current while finding the resonant frequency with each change in bias current The high loss effect was observed with a bias current of 1500 A TOS 0979 core Forward power: kW Reverse power: 328 W Cavity pickup voltage: – 6.2 V before high loss effect – About 5 V after high loss effect John Reid, Kiyomi Seiya, Dennis Barak

High loss effect – cavity pickup John Reid, Kiyomi Seiya, Dennis Barak

Follow-on burst John Reid, Kiyomi Seiya, Dennis Barak

High loss at maximum bias current? Bias current: 10,000 A Forward power: 4.22 kW Reverse power: 243 W Cavity pickup voltage: V (p-p) SG setting: +9 dBm Q: 655 No high loss effect John Reid, Kiyomi Seiya, Dennis Barak

Next steps Compare these measurements to older data Place a stackpole core inside the structure and make the same measurements Try a new core Continue to characterize our measurements Possible issue: – The return bus bar was getting hot at 10,000 A. – The current was dropping by about 5 A every single pulse while components were warming up. Testing of new ferrites will start once we understand the results that we are getting John Reid, Kiyomi Seiya, Dennis Barak