f

HINS Schedule of Activities in Meson During FY08

Bob WebberAD Safety MeetingDecember 5, 2007

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fKey HINS 2008 Objectives in Meson

• Test first SSR1 cavity at full pulsed power

• Achieve 2.5 MeV beam from RFQ• Demonstrate controlled operation of

multiple 325 MHz normal conducting cavities with vector modulators

• Upgrade LCW system• Design and possibly begin

construction of RT linac section shielding cave in MDB

3

fBig Picture -- HINS in Meson

• We continue to pursue the scope of activities described in “HINS R&D Overview” dated 1/16/2007 (Beams Doc #2616)– RF power has been available from 325 MHz Klystron and

Modulator system power since early April 2007– RF Component Test Facility was commissioned in early May

2007– First room temperature cavity was tested in 325 MHz Cavity

Test Cave in September 2007 – Ion Source and RFQ Area is now being outfitted with utilities

• 2008 activities are expected to:– Increase available RF duty factor tenfold and extend RF

power distribution system– Install cryogenic equipment and test cryostat in 325 MHz

Cavity Test Cave– Test superconducting spoke cavity in cave– Commission Ion Source and RFQ Area equipment– Operate 2.5 MeV beam– Establish design and possibly begin construction of front

end of the 65 MeV Linac Cave – Upgrade Meson LCW system

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fExtend RF Power Distribution System

• “Ultimately” is next week !– Present load is to be removed– RF transmission line will be extended with 6” coax– 250 kW !!! termination will be connected– New/updated documentation required???– Line will be power tested – no x-ray hazard– In preparation for temporary (6 mo.) RF distribution to RFQ

2.5 MWKlystron

Load

Circulator

Waveguide Switch

Load

2.5 MW ultimately to RFQ and Linac Cave

Load

to RF Component Test Area

Cage

10 db Waveguide

Coupler

Load

Load 10 db Coax Coupler

25 kW

to Cavity Test Cave

250 kW

2.5 MW

Coax Switch

Waveguide Shutter

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RF Component Test Facility

Ion Source and RFQ Area 150 ft.

HINS Cavity Test Cave

60 MeV Linac Cave

Klystron and Modulator Area

Existing CC2 Cave

ILC HTC Cave

HINS Floor Plan in Meson Detector Building

RF Extension

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fIncrease RF Duty Factor Tenfold

• New charging supply for 325 MHz klystron modulator will be ready for commissioning early 2008– Commissioning plan will be written and

executed– “Modulator” and “RF Distribution

System” LOTO procedures will need to be updated

– X-ray levels at klystron collector must be checked as klystron average power is increased to maximum

– Except for LOTO, no changes expected in RF system operating procedures

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fCryogenics and SC Cavity Testing

• Test Cryostat - earliest delivery is ~April ‘08

• Cryogenics Distribution - earliest delivery is summer‘08

• Superconducting cavity testing in cave - cavity likely available before cryostat and cryogenics – testing unlikely before September ‘08

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f2.5 MeV Beam from RFQ• Infrastructure

– Caged area for ion source and RFQ at the HINS location is now being outfitted with utilities

• Ion Source– Loma Linda type proton source (with upgraded support

systems) has been recently operated in MS6 by Henryk Piekarz et al.

– Untimely loss of Doug Moehs is a blow to H- source development yet to be addressed (for HINS and AD ops)

– Proton source move to MDB expected in late January ‘08• RFQ

– In RF tuning lab at ACCSYS as of Nov. 27 report– Trip to witness bead pull test pending for mid-December– Delivery expected late January ‘08

• RF Power Distribution– Distribution to service RFQ alone is being installed; parts

in hand• RF and Rad Safety Issues

– Resuming regular meetings with AD ES&H • 2.5 MeV Beam – May Day???

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fRT Linac Section Cave in MDB • Design efforts must begin this year

– Understand scale of major objects to define enclosure size• Cavity cryostat dimensions and peripherals• Scale of cryogenic system feedcans and transfer

lines– Understand installation/operation phasing for

increasing linac energy– Quantify required utilities and cave infrastructure– Address safety issues

• Egress• Shielding• Accessibility for maintenance

• Construction could have major impact on other MDB operations

• Cost estimates and implementation plan must be developed– Concrete shielding blocks available on site may not

fulfill needs

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fMeson LCW System Upgrade

• Meson LCW system is incapable to provide HINS required flow

• AD Mechanical Dept. Fluids Group is finalizing details of upgrade plan – Finalization of design is slow (accelerator

shutdown etc.)– Includes new pump skid and extensive new piping– Price tag is in the order of $100k

• Implementation will have ~2 week integrated impact on water availability for ILC efforts in MDB– Work is unlikely to begin before end of February– Interruptions of water service unlikely before

March– Elvin Harms has been kept in the loop from HTS

group

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fConclusion

• We need continued communication with and guidance from AD ES&H– To assure safe development and

operation of the facility– To foresee and forestall last minute

procedural or approval glitches– To continue the HINS R&D at a pace

expected by the Directorate with eyes to possible Project X

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fEND

• The End• Backup slides follow

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Test cryostat statusTest cryostat status Vacuum vessel

Order placed September 19. Quoted delivery 16 weeks.

Magnetic shield Plan to soul source design and fabrication to Amuneal

for ~$38,000. Estimated delivery 12 weeks.

Thermal shield and MLI Design in process. Detailed design estimated

November 1.

Support post Design complete – release by October 1. Estimated

delivery 8 weeks. In-house assembly required.

Internal piping Conceptual design only. Detailed design complete

estimated January 1.

Power coupler Version 2 design complete – release by October 15.

Estimated delivery 16 weeks.

Final assembly Earliest delivery to MDB ~ March 15, 2008. Vacuum

vessel, shields, piping, etc. No cavity or coupler. Assumes TD technician availability.

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fMultiple Cavity/Vector Modulator Operation

• Proof-of-principle demonstration is FY’08 objective– RFQ plus one or two RT cavities, not in final configuration– Cavities perhaps not installed in final position– Makeshift RF distribution components

• Vector Modulators– 75 kW phase shifters have been demonstrated– 75 kW modulator is being tested to understand coupling

between amplitude and phase modulation– 500 kW modulator (for RFQ) testing on hold

• Commercial hybrid coupler failed, replacement on order• Ferrite phase shifters OK so far• Awaiting high power circulator delivery (customs

paperwork)• Vector Modulator Bias Power Supplies

– AD EE Dept. has provided one pair of supplies for initial testing

– They appear committed to continue work on this project• Low Level RF Controls

– Yet to identify resources to focus on these issues– This will be the critical path!

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fHINS Meson Priorities for FY08

• Design, fab and install HINS spoke cavity test cryostat (TD, AD)– Installation to begin August? Limited by completion of design and fabrication severly

constrained by number of cryogenics engineers and mechanical engineers with cryogenic compoent expericne!!!

• Design, fab and install cryogenics for test cryostat (AD, TD, APC)– Installation to begin in Procure design and fabrication services

• Install and commission Ion Source and RFQ (APC, AD, PPD)

• Process and power test first SSR1 cavity (and up to 3 more now on order) HINS test cryostat (TD, APC)– Cavity processing– Coupler testing

• SSR1 helium vessel, tuner, coupler, and cryomodule design (TD)

• Continue vector modulator development and testing (APC, AD)• RT section RF distribution system design and procurement

(APC)

• Vector modulator power supply system (AD) • SC solenoid power supply system design (AD)• Procure, dress, RF condition remaining 17 RT cavities (TD, APC)

• Meson LCW system upgrade (AD, APC) • Design and begin construction of RT linac shielding cave (AD,

PPD)• Procure and test SC solenoids and cryostats for RT section (TD)

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fBroad Impact Meson Questions

• What is to be the disposition of the present CC2 Cave?– We are now installing HINS ion source and RFQ

infrastructure north of cave– Per Jay Theilacker, design and installation of

HINS Linac cryogenics is considerably simpler and less expensive if CC2 cave was dismantled to allow a straight shot for cryo transfer lines into HINS Linac cave

• HINS Linac is expected to require the full capability of Meson Cryo plant (in 2010?)– How will this be compatible with other planned

MDB activities?– What are those planned activities?