Overview of the ARCS Project Plan: The View at One Year

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Overview of the ARCS Project PlanThe View at
One Year
ARCS IDT Meeting Lujan Center, LANL
September 30, 2002

• Doug Abernathy
• ARCS Instrument Scientist

SNS Instrument Systems
Argonne/Oak Ridge
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ARCS -- The Project -- Key People and Places
Brent Fultz -- Caltech (project leader,
coordinator, aligner of personnel) Doug
Abernathy -- Caltech and Argonne (hardware
project manager) Michael Aivazis -- Caltech
(software project manager) Hardware Engineering
Argonne (Robb Williams) Hardware Construction
-- Oak Ridge Software -- Caltech
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ARCS -- The Project -- Management
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Bifurcation of ARCS

• Full instrument had no contingency funds
• Canadian CFI program prompted interest in a
• second high-energy chopper instrument
• International class facility should have a
  general
• purpose and a magnetism instrument

Presently
CNCS (Eilt50 meV) 2 resolution 140o at 3 m
SEQUOIA 1 resolution 60o at 5.5 m
ARCS 2 resolution 140o at 3 m
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a wide Angular-Range Chopper
Spectrometer
Intended for study of atomic-scale dynamics in
the thermal and epithermal range with single
crystal capability.
Moderator decoupled poisoned water Beam
line 18 Source-sample 13.6 m Sample-detector 3.0m
IDT headed by Brent Fultz Scientist Doug
Abernathy

• Lattice dynamics
• Entropy and the effects of vibrational modes on
  stability and phase transitions of solids
• Excitations in disordered materials effects of
  nanoscale features on vibrational entropy and
  thermodynamic stability
• Equations of state from measurements of the
  phonon density of states as a function of
  temperature and pressure
• Phonons in correlated-electron materials
  coupling of lattice and electronic degrees of
  freedom in high Tc, heavy-fermion and mixed
  valence materials
• Magnetic dynamics
• High temperature superconductivity
• Crystal field spectroscopy
• Low dimensional systems 1D quantum magnets and
  low-dimensional conductors
• Magnetism in actinide materials
• Heavy fermion magnetism and superconductivity
• Metal-insulator transitions in oxides
• Chemical Physics
• Deep inelastic neutron scattering studies of
  hydrogen
• Characterization of novel materials

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ARCS Instrument Overview
Moderator
Shutter
Guides
Choppers
Sample
Detector Array
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DOE Review March 2002

• The ARCS Baseline Review Committee included
  experts in instruments and in project management
  because no previous reviews had been held.
• Important recommendations
• Develop a Project Execution Plan and Memorandum
  of Agreement with SNS to solidify the project
  management structure
• Major instrumental uncertainties need to be
  address
• Operation of detectors in vacuum
• Shielding needed for personnel dose rates and
  backgrounds

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Key dates in schedules as presented 3/02

• Early Late
• Project start 9/01 9/01
• Detector in vacuum decision 9/02 9/02
• Guide procurement 9/02 9/02
• First detector module procurement 8/03 9/05
• Vessel procurement 9/03 10/03
• Target inserts needed 6/04 6/04
• Target Building occupancy date 6/04 6/04
• Start installation 6/04 6/04
• End detector module assembly and
  testing 5/05 7/06
• SNS project early completion 12/05 12/05
• End installation 1/06 8/06
• Project end 9/06 9/06

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SEQUOIA a proposal for high-resolution
Principal Investigator Steve Nagler Instrument
Scientist Garrett Granroth Early identification
should allow much better optimization of design
for ARCS
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Costs

• Methods for cost reporting and tracking of the
  baseline schedule are being developed at Argonne
  with SNS personnel
• Preliminary costs through August 2002 for the
  instrument effort
• Caltech Hardware for prototype testing
• Costs 89,600
• Commitments 23,900
• Oak Ridge Personnel (instrument scientist
  shielding calculations)
• Costs 176,300
• Argonne Personnel (engineer designer
  technician)
• Costs 307,200
• Current budget through August
• Materials 90,700 Actual - 113,500
• Work 444,900 Actual - 483,500