HINS R&D Program Status for 11/15/2006

AD Accelerator Physics Department Meeting

2Fermilab

HINS R&D Program Objectives

To construct and test key components of the low-energy Linac concept and integrate into a

demonstration accelerator in Meson Detector Building

• Install and commission 2.5 MW, 325 MHz klystron system• Equip and operate a 325 MHz high power RF component test

facility• Fabricate, install, and operate a test stand for 325 MHz RT

cavities and a test cryostat for 325 MHz SC spoke cavities• Assemble ion source and RFQ providing a 2.5 MeV beam source• Assemble the 10 MeV RT Linac, operate with beam, and verify

performance• Install 325 MHz SC spoke resonator cryomodules and operate

with beam up to 90 MeV

This all adds up to building a first-of-its-kind superconducting 90 MeV H- linac

3Fermilab

Meson Building Floor Plan

90 MeV Linac

Klystron and Modulator Area

RF Component Test Facility

Cavity Test Cave

200 ft.Ion Source and RFQ Area

4Fermilab

Reminder of 2006 Goals and Schedule original dates from May ‘06 (red May/August updates) green as of 11/1/06

• Short “mock” Linac cave section available– May 2006 (nothing yet modeled or installed)

• Klystron modulator completion – July 2006 (late July) (late September) (late October) (begin modulator

testing in November 2006, not ready for klystron before December)

• 325 MHz RF power system commissioning– July 2006 (early August) (early October) (November) (mid-December)

• 325 MHz component testing in RF test area– Starting August 2006 (delayed due to Modulator) (mid-December)

• 325 MHz RT cavity power testing in cavity test cave– September 2006 (delayed due to Modulator) (mid-January 2007)

• Superconducting cavity test cryostat installation– October 2006 (Spring ‘07) (Summer ‘07) (late summer 2007)

• Ion Source installation in Meson– November 2006 (January ‘07) (CC2 shows no sign of going away!!)

5Fermilab

Reminder of 2007 Goals and Schedule original dates from May ‘06 (red May/August updates) green as of 11/1/06

• RFQ (now in procurement) delivery and power testing– January 2007 (~6 months from June 30, 2006 order date) (~6 months

from Sept. 14, 2006 review date) (later than May 2007)• Production quantity RT cavity and coupler delivery & testing

– Starting February 2007 (May 2007)• 2.5 MeV beam tests

– Beginning February 2007 (April 2007) (June 2007?) (CC2 shows no sign of going away!!)

• First SC spoke resonator power tests in test cryostat– April 2007 (Fall 2007 ? )

• Linac cave construction and utilities installation– May 2007 (October 2007)

• Demonstration of multiple Room Temperature cavity RF distribution and independent amplitude & phase control– July 2007 (FY08)

• Beam accelerated through first ‘N’ RT cavities– September 2007 (optimistic) (FY08)

6Fermilab

Meson Schedule 2008original dates from May ‘06 (red May/August updates) green as of 11/1/06

• Full 10 MeV RT linac installed– April 2008 (October 2008)

• R&D beam operations at 10 MeV– Starting May 2008 (January 2009)

• First SC spoke resonator cryomodule installation– October 2008

• Tests of RT + SC cavity RF distribution and independent amplitude & phase control– November 2008

• Beam through first SC spoke cryomodule– December 2008 (optimistic)

7Fermilab

Meson Building Floor Plan Revised

8Fermilab

Cavity Test Cave Layout

9Fermilab

Meson Status November 15, 2006

• Klystron modulator in place as of this week!!• Power and water distribution for klystron, RF

component test area and cavity test cave complete• Klystron cooling water connected and circulating• Pulse transformer and klystron cathode oil tanks filled• Waveguide installed to RF component test area• RF component test shielding cage 80% complete• Safety interlock boxes and chassis’ installed• Timing system and computers for controls are installed• Working with AD ES&H to define and write necessary

safety documentation• 50 KeV proton ion source operating in MS-6

10Fermilab

Accelerator Division Manpower Status

• Many people are interested – weekly AD HINS meeting typically draws up to 15 people

• ES&H interlocks group has been particularly responsive and productive

• It is a problem that this program is essentially no one’s priority assignment

• Lack of committed resources makes credible scheduling very difficult

• Resources in particular demand are:

– HL & LL RF Engineers– Radiation safety experts – Mechanical and electronic techs

• September AD Manpower utilized• Note that 44%, 6 FTE, went to

modulator which is near completion

• October AD Manpower was 15.34 FTE• Note that 37%, 5.8 FTE, went to

modulator, which is near completion

11Fermilab

Near Term Goals

• Commission modulator into dummy load• Replace questionable snubbers in output switch• Pulse klystron to verify RF operation and

assure acceptable X-ray levels• Begin high power phase shifter and circulator

testing in component test area• Power test and condition first Room

Temperature accelerating cavity in test cave• Continue ion source testing in MS-6

12Fermilab

Modulator Switch Cabinet

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Modulator Switch Cabinet

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Klystron and Waveguide

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Modulator in Place

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Modulator in Place

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RF Component Test Area Cage

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RF Component Test Cage

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A 10 db 325MHz Waveguide Coupler

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Electronics Installed

Klystron solenoid power

supplies

Klystron and modulator interlocks

Control system timing

cratePersonnel

safety interlocks

21Fermilab

Status of RT CH-01

Gennady Romanov

22Fermilab

First RT CH Cavity in Production

End wall assemblies ready to be End wall assemblies ready to be brazed. brazed.

Copper spokes rough machined and Copper spokes rough machined and annealed; waiting to be finished.annealed; waiting to be finished.

Body wall roughed in and annealed.Body wall roughed in and annealed.

Cavity in concept.Cavity in concept.

23Fermilab

RT CH-01 after brazing at California Brazing

Arrived to HI-TECH Manufacturing

The spokes, SS tubes and cooling tube have been brazed. The fixtures holding the cooling tube in place during brazing are still on the cavity.

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RT CH-01 after welding of SS flanges at HI-TECH

A day before shipping to Fermilab

25Fermilab

RT CH-01 in the RF lab in IB4

The end-walls are not completed – there are no flanges on the beam pipes. Coupler port is justcovered with blank flange. The cold models oftuners are installed.

Length 60 mm (nominal 40 mm)Diameter 20 mm

26Fermilab

RF parameters of RT CH-01 before final welding of the end-walls (RF measurements are done by Timergali)

Accelerating field distribution along axis

0

0.2

0.4

0.6

0.8

1

1.2

2 4 6 8 10 12 14 16 18 20

Distance along axis, mm

Ez/

Ezm

ax

Exp.

Sim.

F= 324.25 MHzat 20.5 C° and humidity of 46%without tuners and powercoupler.

Q = 9140 ( 9260 simulated)

The higher modes are 436.12,503.17 and 604.02 MHz

Relative field amplitude in thecenters of gaps: 0.463 0.984 1.0 0.471

Distance between centersof gaps in mm: 34.963 0.66334.235 or -0.06534.427 0.127

deviation from nominal. It looks like the spokes are spaced normally,but the end-walls are a little bit apart.

27Fermilab

Tuning range of the tuners

Tuning curve (both tuners move together)

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

0 10 20 30 40 50 60 70 80

Protrusion, mm

Fre

qu

en

cy

ch

an

ge

, MH

z 40 mm nominal stroke

1.2 MHz as predicted

The tuners were moved together.

28Fermilab

Conclusion

• RF parameters meet design requirements.• Tuning range of the mechanical tuners is as expected.• The final welding of the end-walls can be done.• Additional visual inspection should be done before shipping the cavity back to HI-TECH • Cold measurements of complete cavity, Vacuum and high-power tests are next.

29Fermilab

Dear Santa Claus

We have been real good sometimes this year.

Please bring us 325 MHz RF power for Christmas.

The HINS Family