Twnss 1-jsg-yano
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The Taiwan Neutron Sika Project, led by Dr. Shin-ichiro Yano and the NSRRC Neutron Group, emphasizes its capabilities in neutron scattering with the Sika triple-axis spectrometer. With significant international collaboration, the project focuses on providing research opportunities in Asia-Oceania and aims to become a top-class facility for materials science research. The document details operational phases, research statistics, and the various scientific instruments available for user programs since 2015.
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![J1 = 0.050 meV
J2 = 0.143 meV
D = 0.163 meV
? Aluminum (Al) phonon dispersion
0.05 0.10 0.15 0.20 0.25 0.30
0
2
4
6
8
10
12
h (A-1
)
e(meV)
? MnF2 magnon dispersion
? hq = 16*s*J2{(1+)2-2}1/2
? s = 5/2, z1(nearest)=2, z2(next
nearest) = 8,
= [D+8*s*J1sin2(1/2*qz*c)]/16*s*J2
= cos2(1/2*qz*a)
Ineslastic neutron scattering](https://image.slidesharecdn.com/twnss-1-jsg-yano-151107001001-lva1-app6892/85/Twnss-1-jsg-yano-17-320.jpg)
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Twnss 1-jsg-yano
- 1. Taiwan SIKA project NSRRC, Neutron Group, SIKA instrument scientist Dr. Shin-ichiro Yano. Get your SIKA USB and Be part of it!!
- 2. W Taiwan neutron SIKA project Who we are What we can do How you can use us
- 3. W Taiwan neutron SIKA project Who we are What we can do What you can use us NSRRC neutron Group
- 4. We are stationed at ANSTO, Bragg institute, Sydney Australia NSRRC neutron group
- 5. ? Jason Gardner vGroup Leader (оT) ? SIKA: ǿ (Dr. Chun-Ming Wu) ? Powder Diffraction: M (Dr. Chin-Wei Wang) ? Soft matter scientist: (Dr. Che-Yi Chu) ? Hard matter scientist: ʸҰһ (Dr. Shin-ichiro Yano) vInstrument Scientists (оT) ? ־ ( Hanz Peng) văxع̎ Engineer http://nsrrc.com/neutron/ Our people
- 7. W Taiwan neutron SIKA project Who we are What we can do What you can use us NSRRC neutron Group Neutron scattering SIKA
- 8. Triple axis spectrometer SIKA The SIKAs dance floor consist of 34 solid granite tiles. The instrument could be used for both thermal cold neutron TAS. The best energy resolution of 0.0275 meV (FWHM) is provided at Ei= 2.6 meV
- 9. Agreement signed off between ANSTO and NCU. 2005 2014 Final assembled SIKA Design phase Construction phase Commissioning phase 2009 2012 2013 Operation First inelastic result 2015 NSRRC User Office Opens Taiwan neutron SIKA project First Program Advisory Committee
- 10. The cold triple axis spectrometer SIKA We are currently working hard to get background down to be a world top class cold triple axis spectrometer Located at ANSTO-Bragg institute J1 = 0.050 meV J2 = 0.143 meV D = 0.163 meV MnF2
- 11. Cold Triple axis in the world LTAS, C11 (stopped, JRR3M) CTAS (under commission, HANARO) SIKA (User program since 2015 July) CHINA (construction, CARR) PANDA (Germany FRM-II) IN14 (Frence ILL) SIKA will be very important 1. Only one Cold TAS starts user program in Asia-Oceania area soon 2. Neutron flux at sample position is (will be) good MACS, SPINS (NIST,NCNR) CTAX (HIFR,ORNL)
- 12. Neutron communities (Potential Users) Asia-Oseania Neutron Scattering Association (the 2nd Conference took place in Sydney, Australia in 2015.) CNSS JSNS TWNSS KNBUA ANBUS(Australia) ? A number of users from Taiwan ? Contribution to Asia- Oceania area
- 13. Some Statistics (Principal Investigators) 2015-2 cycle 110 days requested 2016-1cycle 119 days requested (now in program) (under review) Japan 10 % China 35 % Australia 15 %NSRRC 27 % NCU 13 % Australia 29 % China 23 % NSRRC 17 % Tamkang DongHwa 19 % Hong Kong 8 % Jpn 4% Approved 50 days => demand/supply = 2.2
- 14. Taiwan has 150 days of beam time for internal use Our beam time Soft matter Thin film Condensed matter Diffraction Condensed matter physics inelastic scattering ~20 days ~30 days~100 days Membranes 38 40 0.4 0.6 0.8 (001) ??? 0.313 (71) (110) ??? 0.252 (65) Intensities(counts/monitor) Temperature (K) 0 100 200 300 400 500 600 700 800 35 36 37 38 39 40 41 42 Lix C54 LiC12 Discharge Phase - Charge Phase - Relaxation Phase 2Theta(deg) LiC6 Minutes 0.05 0.10 0.15 0.20 0.25 0.30 0 2 4 6 8 10 12 h (A-1 ) e(meV) Al Phonon MnF2 Magnon NiS2 Critical scattering Li Battery Lipid Lamella
- 15. Code Name Description Temp- range AVM-1 12T asym., vertical field magnet 12 Tesla vertical field re-condensing magnet: 0.5T/min; it can accommodate dilution fridge. 1.5K - 300K CF-1 Cryofurnace, bottom loader Standard bottom loader for SIKA can reach 750K with high T insert; Can be used with electric field equipment. 8K - 750K CF-3 Cryofurnace, bottom loader Pooled bottom loader for general use can reach 750K with the high T insert 5K- 750K CF-4 Cryocooler, bottom loader Bottom loader can be used with electric field equipment or with 8T vertical field cryomagnet. 5K - 300K CF-7 Top loading, cryofurnace Top Loading AS Scientific Cryofurnace, it can reach 750K with full rang sample stick. 4K to 450K CF-9 Top loading, cryofurnace Top Loading cryostat, it can be used with 8T vertical field cryomagnet. 2K to 300K DL-1 Dilution fridge Dilution fridge can be used drop the minimum temperature to 0.05K 0.05K OC-1 Orange Cryostat LHe wet cryostat 1.5K - 300K OS-1 He-3 one-shot fridge Helium 3 cooled one shot fridge to be used with the orange cryostat OC-1 0.5K for 8 hrs Sample Environment (ANSTO) But, it is probably better we have our own cryostat!!
- 16. 28 29 30 31 0 1 2 3 4 (001) ????????????? (110) ????????????? Intensities(counts/monitor) Temperature (K) Diffraction on NiS2 1 2 3 4 (0.5 0.5 0.5) 0 1 2 3 4 (100) (011) Intensity(counts/monitor) 25 30 35 40 45 5 10 15 20 (111) (200) Temperature (K) Background M2 M2 M2 M1 BG Nuclear ? M2 phase only @(0.5 0.5 0.5) with = 0.223(29) @(1 1 1) with = 0.219(54) @(2 0 0) with = 0.227(37) 38 40 0.4 0.6 0.8 (001) ??? 0.313 (71) (110) ??? 0.252 (65) Intensities(counts/monitor) Temperature (K) M1 M2 28 29 30 31 0 1 2 3 4 (0.5 0.5 0.5) ????????????? Intensity(counts/monitor) Temperature (K) 28 29 30 31 5 10 15 20 (111) with ????????????? (200)with ????????????? M. Matsuura et al. PRB 68 094409 (2003) M1 = 0.306(3) M2 = 0.220(10) ? M1 + M2 phase k = 0 0 0 @(1 0 0) = 0.313(71) @(0 1 1) = 0.252(65) k = 0.5 0.5 0.5 @(1 0 0) with = 0.194(53) @(0 1 1) with = 0.246(50)
- 17. J1 = 0.050 meV J2 = 0.143 meV D = 0.163 meV ? Aluminum (Al) phonon dispersion 0.05 0.10 0.15 0.20 0.25 0.30 0 2 4 6 8 10 12 h (A-1 ) e(meV) ? MnF2 magnon dispersion ? hq = 16*s*J2{(1+)2-2}1/2 ? s = 5/2, z1(nearest)=2, z2(next nearest) = 8, = [D+8*s*J1sin2(1/2*qz*c)]/16*s*J2 = cos2(1/2*qz*a) Ineslastic neutron scattering
- 18. SAXS Pattern Lipid Lamella Structure On SIKA
- 19. W Taiwan neutron SIKA project Who we are What we can do What you can use us NSRRC neutron Group Neutron scattering NSRRC proposal system
- 20. Beam time application You can also consult with our group for your proposal Neutron facilities J-PARC, ISIS, ORNL, ILL, ANSTO, and so on We have practice round for proposals
- 21. Bragg institute
- 22. Excitation Workshop at NCKU, 2014 SIKA 1st International User Program May 2015 Thank you for your attention!!
Editor's Notes
- #15: Dont mention that the reactor runs for 300 The user program is 250 days/year. Taiwan gets 70 % of that on SIKA People will ask about swapping this for other beam time, we want to but ANSTO management is not in favour at the moment.
- #16: Can mention that it would be great if SIKA could have its own. Better use, better understanding and better background. If they ask, this costs 6M NT$
- #19: What is needed here is HIGH-Q data up to 2A-1. That means our background needs to be better
- #22: Taiwan has no office
- #23: SIKA in the 2015-2 ANSTO call ~120 days requested. About 50 days given away, so 2* demand NEED more taiwanese users interested in INELASTIC NEUTRON SCATTERING Sika can help with diffraction studies, but we cant do crystallography. Only d-spacing and order parameter type measurements Mention that we are working hard to reduce the background and improve the detector system that was very noisy and slow