Building MACS

Goals of the MACS projectFunding and time lineTechnical overviewPossible IDG contributionsProcess for IDG involvement in MACS

MACS: A versatile probe of dynamic processes in condensed matter

Maximize instrumental efficiencyWorlds most intense monochromatic cold neutron beamMaximize solid angle and efficiency of detection systemTaylor energy band probed to scientific problem

Minimize instrumental background From fast neutronsFrom non-sample scattering

User-Friendly instrumentReliable hardwareStreamline experimental processReliable software for planning, execution, and analysis

JHU 10/19/01

MACS Timeline1993 Discussions about the possibility of a “sub-thermal” TAS on

NG01994 Analytical calculations show efficacy of double focusing at NG01995 Initiate JHU/NIST project to develop conceptual design1998 Top level specification for monochromator completed1998 JHU/NIST project starts to develop Monochromator2000 Christoph Brocker starts engineering design2001 NIST-NSF-JHU agreement to fund MACS2001 MACS double focusing monochromator completed2001 MPP in place for entire project2001 Assistant engineer on board to help Christoph Brocker2002 Detector system prototype testing2004 MACS Post doctoral fellow to start2005 July: MACS complete and assembled at NIST2006 January: MACS User program starts 2006 August: MACS project complete

JHU 10/19/01

MACS Funding

Year 1 Year 2 Year 3 Year 4 Year 5 Cumulative NIST NSF J HUPersonnelTotal Personnel Costs 76,085 78,691 81,388 152,929 158,180 547,273 206,450 233,511 107,312 NIST Personnel contribution - - 21,437 90,937 94,076 206,450 NSF Personnel contribution 56,073 57,979 38,514 39,804 41,140 233,511 J HU Personnel contribution 20,012 20,712 21,437 22,187 22,964 107,312 Materials and Manufacturing Total 656,000 869,000 937,000 506,000 80,000 3,048,000 1,581,511 1,366,489 100,000 NIST contrib. to materials & manufacturing240,406 455,312 503,847 365,804 16,140 1,581,510 J HU contrib. to materials & manufacturing. 20,000 20,000 20,000 20,000 20,000 100,000 NSF contrib. To materials & manufacturing395,594 393,688 413,153 120,196 43,860 1,366,490 J HU 63.5% F&A on J HU and NSF contribs.263,902 262,692 275,052 89,024 40,551 931,221 931,221 Other Direct Costs - Design Services 300,000 350,000 193,039 140,000 82,000 1,065,039 1,065,039 Assembly and Install. Serv. 50,000 165,000 232,000 447,000 447,000 MACS Completion Cost 1,295,987 1,560,383 1,536,479 1,052,953 592,731 6,038,533 3,300,000 1,600,000 1,138,533 Prior investments in MACS J HU/NIST Monochr. project 320,934 215,943 104,991 Monochromator parts 193,000 193,000 PG crystals 53,550 53,550 Design 7/00-6/01 120,000 120,000 Total MACS Cost 6,726,017 3,882,493 1,600,000 1,243,524

JHU 10/19/01

Spending profile by category

-200,000400,000600,000800,000

1,000,0001,200,0001,400,000

$

1 2 3 4 5

Year

MACS Spending Profile

Assembly+Installation

Design Services

Materials andManufacturing Total

Personnel Cost

JHU 10/19/01

NCNR Liquid Hydrogen cold source

MACS Beam

New cold source to be installed in 2001 will double flux

K 45

/n/cm 108.4 213

effT

s

Overview of MACS

Design by C. Brocker, C. Wrenn, and M. Murbach

JHU 10/19/01

Monte Carlo Simulation of MACS

Y. Qiu and C. Broholm to be published (2000)

JHU 10/19/01

Multiplexing crystal analyzer system

Design by C. Brocker

One of twenty channels

BeO filterBeO filter

Be filterBe filter

PG filterPG filterCollimator 2Collimator 2

Collimator 1Collimator 1

8o vertically focusingAnalyzer crystals

8o vertically focusingAnalyzer crystals

“TAS” detector“TAS” detector

Energy integratingDetector

Energy integratingDetector

Design by C. Brocker

JHU 10/19/01

Considerations for IDG involvement

Match to IDG expertiseMatch to resources availableSimple and well defined and interfacesSimilarities to monochromator project:

Top level documentationCollaboration with Brand, Brocker, and BroholmTesting and documentation

Different from monochromator project:Funding in placeMostly direct payments from NSF grant

JHU 10/19/01

Possible IDG tasks

Cryogenic filter assembly for incident beamCryogenic filter assembly for detector systemMonochromator translation stageCollimator exchanger for detection systemDouble crystal spectrometer systemNeutron beam imaging systemAttenuator exchange systemBeam line slitsEntire detection systemInstrument control Software development

JHU 10/19/01

Process for IDG involvementIDG learns about possible sub projectsIDG selects likely project(s)Brocker, Broholm, and Brand develop top level

specificationIDG presents good faith estimate of time and price Broholm approves proposal in consultation with NISTIDG designs builds and tests with monthly technical and

financial status reporting.Monthly payment from JHU accountDemonstrate hardware, documentation, and test results at

JHUShip equipment to NISTConsult during installation process