# Presentation: 545187

## HINS Schedule of Activities in Meson During FY08

**Bob Webber**
**AD Safety Meeting**
**December 5, 2007**

## Key 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 **

## Big 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**

## Extend 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 **

## HINS Floor Plan in Meson Detector Building

**RF Component Test Facility**

**Ion Source and RFQ Area**

**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**

## Increase 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**

## Cryogenics 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**

## 2.5 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???**

## RT 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 **

## Meson 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**

## Conclusion

**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**

## END

**The End**
**Backup slides follow**

## Test 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.

- Tom Nicol slide
- Sept. 27, 2007

## Multiple 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!**

## HINS 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)**

## Broad 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?**