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Overview of the HINS RD Program in the Context
of Project X
Bob Webber Instrumentation Department
Meeting February 20, 2008
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Definitions

• Proton Driver
• Generic name for past 15 years for new, higher
  intensity machines and schemes to replace present
  Linac and Booster
• Both linac and synchrotron options have been
  considered
• Most recently, the name for an 8 GeV
  superconducting ILC-like H- linac that fell out
  of favor relative to ILC
• High Intensity Neutrino Source HINS
• A DOE approved and funded avenue to pursue
  advanced low energy linac technologies (ala
  Proton Driver front-end design) as well as
  e-cloud, H- injection, and other small scale RD
  activities in the name of neutrino science
• Project X
• A proposal, publicly promoted by Fermilab
  Directorate, to simultaneously provide 2 MW of
  protons for neutrinos at 120 GeV and 200kW of
  protons for experiments at 8 GeV
• Includes 8 GeV linac with beam current and pulse
  length parameters aligned with those of the ILC
• Includes upgrades to RR, MI, and NUMI target
  system

3
Project X Layout
120 GeV fast extraction spill 1.5 x 1014
protons/1.4 sec 2 MW
New 8 GeV extraction 1 second x 2.25 x 1014
protons/1.4 sec 200 kW
Recycler 3 linac pulses/fill
Main Injector 1.4 sec cycle
New 8 GeV H- Linac 9mA x 1 msec x 5 Hz
New Stripping Foil
Single turn transfer _at_ 8 GeV
0.4-8 GeV ILC Style Linac
0.4 GeV Front End Linac
Project X Overview - McGinnis
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The Project X Plan

• It is anticipated that the Project X RD Program
  will be undertaken as a national project with
  international participation
• Fermilab does not have the personnel resources to
  undertake the Project X RD Program, or a
  follow-on construction project, on its own
• the intention is to organize and execute the
  RD Program via a multi-institutional
  collaboration, drawing significant participation
  from outside of Fermilab
• The goal is to give collaborators complete and
  contained sub-projects, meaning they hold
  responsibility for design, engineering,
  estimating, and potentially construction if/when
  Project X proceeds
• A very readable and comprehensive overview of
  current Project X thinking is offered in Steve
  Holmes 1/31/08 talk to the P5 Committee
  http//www.fnal.gov/directorate/program_planning/P
  5/P5_Jan2008/Talks/Holmes_PX.pdf
• A detailed 4-year Project X RD plan has been
  developed and can be found at http//projectx.fnal
  .gov/RnDplan/index.html

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Project X Time Line Goals

• 2008 Develop design and engineering concepts
• Form Project X RD Collaboration
• Achieve CD-0 approval
• 2009 Initiate work on a Conceptual Design
  Report
• Start RD on technical components, in
  coordination with the ILC, SRF, and HINS programs
• Continue accelerator physics and engineering
  design
• Initiate project documentation
• 2010 Finish Conceptual Design Report
• Achieve CD-1 approval
• Continue RD initiate industrialization
  activities
• Form collaboration to undertake project
  construction
• Continue project documentation
• 2011 Develop preliminary design and Technical
  Design Report
• Establish project baseline
• Achieve CD2/3a approval
• Initiate long lead (cryomodule) procurements
• 2012 Begin 4 year construction project

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The Beams of the Linacs
full un-chopped 3 msec pulse at
klystron-limited 20 mA
ILC bunch intensity is 2E10 (electrons)
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The Linac Beam Time Structure
1 msec Linac beam pulse 4 msec full scale
Linac beam chopped for 700 nsec RR Abort Gap 40
µsec full scale
Linac 325 MHz beam chopped for RR RF 3-5 linac
bunches per 53 MHz RR RF cycle 100 nsec full
scale
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HINS Transverse Beam Parameters at 15 mA
Room Temp Linac
First SSR1 Cryomodule
MEBT
10 6 2 mm
100 RMS
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HINS Longitudinal Beam Parameters at 15 mA
RMS Bunch Length at 45 mA mm
RMS Bunch Length
Scale??
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HINS Floor Plan in Meson Detector Building
ILC HTC Cave
HINS Cavity Test Cave
RF Component Test Facility
Klystron and Modulator Area
60 MeV Linac Cave
Existing CC2 Cave
Ion Source and RFQ Area
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HINS RT Section Layout
MEBT
RFQ
Ion Source
dimensions are mm
Start of first SSR1 Cryostat
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HINS SSR Section Layout
SSR1 Cryomodule 2
SSR1 Cryomodule 1 9 solenoids/9 cavities
dimensions are mm
SSR2 Cryomodule 1 6 solenoids/11 cavities
SSR1 Cryomodule 2
HINS includes two SSR1 Cryomodules and one SSR2
Cryomodule
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HINS Status

• 2.5 MW, 325 MHz HINS klystron is operational
• HINS RF Component Test Facility is operational
• Room temperature cavity conditioning is in
  progress
• Four cavities on hand, remaining 12 on order
• Ion Source and RFQ Area is fenced and outfitted
  with utilities
• Proton ion source to move to MDB in March
• RFQ delivery expected in May?
• Superconducting solenoids are on order and
  cryostat procurement is beginning completed
  assemblies will begin to appear late Summer 2008
• Cryostat for testing individual SC cavities is
  being fabricated and will appear in Fall 2008

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HINS Beam Staging

• 2.5 MeV operation
• Short temporary diagnostic/transport line and
  dump after RFQ
• Incomplete conceptual design of diagnostic line
  exists
• Dump is assembled
• RFQ delivery and RF conditioning is still
  critical path
• Present goal for 2.5 MeV beam is mid-summer this
  year
• gt2.5 MeV and lt10 MeV operation ??
• Might operate MEBT plus first four? RT cavities
  with beam
• Test RF distribution and RF high power vector
  modulator control
• Not before early 2009 limited by enclosure
  construction, MEBT buncher cavity construction,
  LLRF development, and focusing solenoid
  production
• Full 10 MeV Room Temperature section operation
• Late Summer 2009? Solenoid production and
  cryogenics system are critical path
• 20 MeV operation with first SSR1 cryomodule
• Summer 2010? SSR1 cavities, cryomodule and
  solenoids are needed
• Full 60 MeV operation
• Late 2011?

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2.5 MeV Transport Line Concept
dimensions are inches
Aluminum coil beam absorber goes here
RFQ is here
Need just one current monitor
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Instrumentation Work Needed Now

• For 2.5 MeV operation
• Complete diagnostic line plans
• Procure/fabricate components and electronics
• Be ready for 2.5 MeV beam by June this year
• For overall HINS program
• Development of a comprehensive beam diagnostics
  plan
• Someone to coordinate on a 50 time basis for a
  few months would be helpful
• Scope out and document the requirements along
  with the current physical constraints and
  implications
• Begin beamline and electronic hardware
  development
• Develop plans for controls system interface and
  outline software requirements
• For Project X
• Consider ideas to instrument 8 GeV
  superconducting Linac with beam structure
  described earlier
• Important question --- electrons in the high
  energy end of the Linac?

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The end

• Backup slides follow

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Key HINS 2008 Objectives in Meson

• Test first SSR1 superconducting spoke 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

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Pulsed Power Test of First SSR1

• Test Cryostat
• Cryostat design yet to be completed and cryostat
  procured
• Headed by Tom Nicol working with industry
• Cryostat to be installed by AD mechanical and
  cryo techs
• Earliest delivery of cryostat is June 08 (next
  slides)
• Cryogenics for Cryostat
• AD Cryo Dept is working to identify vendor for
  both design and fabrication of cryo transfer line
  and interface equipment
• AD Cryo design resources are saturated
• Earliest delivery of cryo components summer 08
• Cavity
• First cavity fabrication is on-site
• BCP processing is collaborative effort with ANL
  first go in January 08?
• Plan bare cavity CW test in ILC-VTS early in 2008
• Processed/dressed cavity is expected to be
  available before test cryostat facility
• Cavity Power Coupler
• Non-adjustable coupler design is nearly complete
• Estimate first coupler delivery and power tests
  early Fall 2008
• Above efforts are all severely constrained by
  availability of cryogenics engineers and
  mechanical engineers with cryogenic component
  experience

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Test cryostat and SSR cryomodule resources

• Test cryostat and cryomodule design
• T. Nicol, S. Meredith, T. Page for HTS leads.
• Power coupler design
• T. Nicol, T. Khabiboulline, S. Meredith.
• Cryostat assembly
• T. Nicol, Technicians TBD.
• MDB installation
• TD and AD/Cryo.
• Potential future resources
• T. Page
• G. Lanfranco
• D. Arnold
• L. Simmons

Tom Nicol slide Sept. 27, 2007
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Test cryostat status

• Vacuum vessel
• Order placed September 19. Quoted delivery 16
  weeks.
• Vendor just ordered material Dec 1. Expect
  delivery no sooner than March 1.
• Magnetic shield
• Plan to soul source design and fabrication to
  Amuneal for 38,000. Estimated delivery 12
  weeks.
• Vendor has sole source. No word on delivery.
• Thermal shield and MLI
• Design in process. Detailed design estimated
  November 1.
• Detailed design complete and being reviewed. Not
  on order.
• Support post
• Design complete release by October 1. Estimated
  delivery 8 weeks. In-house assembly required.
• Fabrication of parts complete for first three
  units. Will build in-house as time is available.
• Internal piping
• Conceptual design only. Detailed design complete
  estimated January 1.
• One meeting with AD-cryo. Detailed design
  probably wont start until after March 1.
• Power coupler
• Version 2 design complete release by October
  15. Estimated delivery 16 weeks.
• Bids due this week. Some design work indicated
  following meeting with AMAC. Expect to re-bid
  with bids due March 1. AMACs schedule is
  similar.
• Final assembly

Tom Nicol slide Sept. 27, 2007 Updates in red
12/6/07
3 month slip in lt3 months
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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.
• Proton source move to MDB expected in late
  January 08
• Untimely loss of Doug Moehs is a blow to H-
  source development, yet to be addressed for both
  HINS and AD ops
• RFQ
• In RF tuning lab at ACCSYS as of Nov. 27 report
• Trip to witness bead pull test is pending for
  mid-December
• Delivery expected late January 08
• RF Power Distribution
• Temporary feed for RFQ is being installed parts
  are on hand
• RF and Rad Safety Issues
• Resuming regular meetings with AD ESH
• 2.5 MeV Beam May Day???

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Multiple Cavity/Vector Modulator Operation

• Proof-of-principle demonstration is FY08
  objective
• RFQ plus one or two RT cavities, not in final
  configuration
• Cavities perhaps not installed in final position
• Makeshift RF distribution components
• 325 MHz 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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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 yet to be completed
  (accelerator shutdown etc.)
• Includes new pump skid and extensive new piping
• Price tag is in the order of 100k
• Installation will have 2 week integrated impact
  on water availability for HINS ILC in MDB
• Work is unlikely to begin before end of February
• Interruptions of water service unlikely before
  March
• Elvin Harms from ILC-HTS group is in the loop

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RT Linac Section Cave in MDB

• Detailed cave design must begin this year
• Must establish scale of major objects to define
  cave size
• Cavity cryostat dimensions and peripherals
• Scale of cryogenic system feedcans and transfer
  lines
• Must develop plan for phased installation and
  operation as higher energy components become
  available
• Must quantify required utilities and cave
  infrastructure
• Must address safety issues
• Egress
• Radiation shielding
• Accessibility for maintenance
• Cost estimates and construction plan must be
  developed
• Design around available concrete shielding blocks
• Are available blocks sufficient? possible major
  cost impact
• Construction could impact other MDB operations

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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?

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Non-MDB 2008 Priorities Requiring Resources

• SSR1 cavity processing (up to 3 beyond first)
  (TD, APC)
• SSR1 helium vessel, tuner, coupler, and
  cryomodule design (TD)
• RT section RF distribution system design and
  procurement (APC)
• Procure and test SC solenoids and cryostats for
  RT section (TD)
• Vector modulator power supply system design (AD)
• SC solenoid power supply system design (AD)
• Procure, dress, RF condition remaining 17 RT
  cavities (TD, APC)