sika- the taiwan contract cold tas at opal...
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Wen-Hsien Li (李文献)Center for Neutron Beam Applications
(中子束應用研究中心) National Central University (中央大學)
SIKA- the Taiwan contract cold TAS at OPAL
(2009年2月23日AONSA EC meeting)
whli@phy.ncu.edu.tw
National Central UniversityNational Central University
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Official Arrangement bet. Taiwan & Australia․ Signed on June 8, 2005 by TECO & ACIO.․ NSC
(1) Construct a high-performance cold TAS within 4 years.
(2) 4 scientists to operate the cold TAS.(3) Obtain 70% of one instrument time
for NSC related scientists.(~240 days neutron beam time)
(4) Instrument time may be distributed overthe full set of instruments at OPAL reactor.
緣起緣起
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*
Australian Nuclear Science and Technology Organisation (ANSTO)
OPALreactor
GuideHall
The locationThe location
Taiwanteamoffice
位於雪梨西南30公里處,時差2小時,飛行時間9小時
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計畫目標計畫目標
1. Construction:To design & build a high performance cold neutron TAS at OPAL to be commissioning by 2010.(Project leads by NCU)
2. Operation:To run user programs, to operate SIKA. (4 scientists at ANSTO, 50 research projects / year) (From 2010 for 15 years)
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Formosan sika deer
Spin-echo Inelastic K-space Analyzer
Triple-axis spectrometer → Inelastic scattering, analyzing k-space.
Cold TAS : ΔE ~ 0.1 to 1 meV
Spin-echo cold neutron triple-axis spectrometer
Spin-polarized Inelastic K-space AnalyzerUltra-high energy resolution
→ resonance spin echo techniqueWith RSET : ΔE ~ 1 to 100 μeV (optional)
SIKA projectSIKA project
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HRPD高解析度中子繞射儀
TOF DCS飛逝時間散射儀
Reflectometer反射儀
Residual stress
HIPD高強度
中子繞射儀
SANS小角度散射儀
Quasi-LaueDiffractometer
Thermal-TAS熱三軸散射儀
Cold-TAS冷三軸散射儀
SIKA locationSIKA location At the OPAL reactor face, receiving CG4
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SIKASIKA--The cold neutron tripleThe cold neutron triple--axis spectrometer at ANSTOaxis spectrometer at ANSTO
Virtual source
Collimator
DF Mono.
2θ=30。~135。
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Operation areaOperation area
Sika: 45 m2
Taipan: 27 m2
Dance floor : GraniteGrade 0, precession < 10μm1650 × 1095 × 120 mm3
Interlock Cabinet
Motion Control Cabinet
DAE Cabinet
Dance Floor
Perimeter wall
45 m2
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Spectrometer design
奈米物性實驗室
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Beam port CG4Size of beam at reactor face 50 x 200 mm2 (W x H)Take-off angular range 2ΘM 30o ≤ 2ΘM ≤ 120o
Monochromator crystals HOPG, η = 24’, double focusing, Si(111)
Monochromator dimensions 220 x 340 mm2 (Width x Height)Useful wavelength range 1.74 Å ≤ λ ≤ 5.8 Å (PG 002)Correspond. wave-vector range 3.6 Å-1 ≤ ki ≤ 1.0 Å-1 (PG 002)Correspond. incident energy range 2.4 meV ≤ Ei ≤ 27 meV (PG 002)Virtual source aperture 0 ≤ W ≤ 65 mm ; H = 220 mmDistances- cold source – monochromator- reactor face – monochromator- virtual source – monochromator- monochromator – sample
6715 mm2300 mm2100 mm 2100 mm
Collimators- α1 (pre-monochromator) - α2 (post-monochromator)
20’, 40’, 60’, open 20’, 40’, 60’, open
Incident beam filters- Be cooled (10 cm) Ei < 5 meV- PG (8 cm) Ei = 13.7 & 14.7 meV- Sapphire (8 cm) Ei > 15 meV
Higher order suppression Higher order suppressionFast neutron suppression
2.4 meV ≤ Ei ≤ 31 meV(Si 111)
SIKA primary spectrometer specificationSIKA primary spectrometer specification
Monochromator:Double focusing
PG and Si
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165.1
mm
162m
m
456m
m
210.9
mm1139.57mm
209.95mm
100m
m
200
mm
50mm
4.05mm
1401mm
1419mm
20 0 m m
50mm
138m
m
253
mm
68mm
19.2mm
Sour
ce
Beam TubeExit Port
4413.99mm Central to Reactor Face
2824.05mm Supermirror Guide, Top, Buttom, and Side M=32mm
2100mm
2100mm
Monochromator11×11 slabs
Slab size = 20×20 mm2Gap between slab = 0.5 mm
2ΘM
348
mm
225mm
Sample
Reactor Face
136m
m
259m
m
80mm250mm
VirtualSource
SecondaryShutter
Sapphirefilter inside
Collimators
900mm
1200mm
80 × 240 × 100 mm(L × H × W )
300mm
1070mm
730mm
250mm
250mm
600m
m
250mm
240m
m
Reactor core
Shielding drum
Reactor face
Double focusingPG/Si monochromator
SIKA primary spectrometerSIKA primary spectrometer
Collimator
Monochromator to sample : 2.1 m
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Si mono雙向聚焦單色晶體
PG mono雙向聚焦單色晶體
Be, PG, Sapphire
filters過濾晶體
Neutron beam中子束
Collimators準直器
Beam shutter束線開關
Components inside the drum Components inside the drum
Side view
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Shielding drum assembly videoShielding drum assembly video
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• By AZ-System• 20 × 22 mm2 HOPG• 11 × 11 crystals• Double focusing
SIKA SIKA monochromatormonochromator
• By AZ-System• 17 × 210 × 10 mm3 Si• 13 crystals• Double focusing
HOPG(002)Si(111)
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• Manufacture in TaiwanShielding drumShielding drum
January 2009 at鼎貿
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SIKA sample stageSIKA sample stageWill go for
Huber tables
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13 HOPG analyzer +1 PSD bank
SIKA secondary spectrometerSIKA secondary spectrometer
1 single detector + 1 diffraction PSD
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SIKA secondary spectrometerSIKA secondary spectrometerAssembly:
Similar to that of BT-7, NIST but with electronics are placed at the
bottom
Electronics
2.1m
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The team & timeline
奈米物性實驗室
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Peter VorderwischConsultant
Chun-Chuen YangInstr. Scientist
Eno ImamovicDesigner
Chun-Ming WuInstr. Scientist
Geoff DuranceMCNP Consultant
Tzu-Neng ChanElectronics
The SIKA teamThe SIKA team
Wen-Hsien LiProject Leader
Jen-Chih PengSpect. control
Hui-Chia SuData analysis
Chin-Wei WangPhD. Student
Yi-Hsuan HungSecretary
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Task Name2006 2007 2008 2009 2010
Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3
SIKA Project PhasePRIMARY Spectrometer
Conceptual DesignMcStas (Performance, Optimization)MCNP SourceMCNP ShieldingConceptual Design Drawings
Engineering DesignCollimator change, Input opticsShielding
ProcurementMonochromator (PG & Si)Collimators, Input opticsSample ModuleShieldingElectronic ComponentsDance Floor (ANSTO)
SECONDARY SpectrometerConceptual DesignEngineering DesignProcurement
INSTALLATIONMonochromator ShieldingMechanical PartsElectrical PartsIT Systems
COMMISSIONINGOPERATION
t
SIKASIKA--timelinetimeline
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SIKAA cold-neutron triple-axisspectrometer at ANSTO
SIKA project timelineSIKA project timeline
Conceptual design
Engineering design
Manufacture & procure
Assemble & install
Commissioning
Primary Secondary
2009200820072006 2010
SecondaryPrimary
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Welcome to visitNCU Center for Neutron Beam Application
Physics DepartmentNational Central University, Taiwan
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