36m sans batan (smarter) – indonesia “improvement the neutron intensity by focusing optics”...

36m SANS BATAN (SMARTer) – INDONESIA

“Improvement The Neutron Intensity By Focusing Optics”

Edy Giri Rachman Putra*, Epung Saepul Bahrum, Bharoto, Eddy Santoso

Neutron Scattering Laboratory – BATAN, Kawasan Puspiptek Serpong, Tangerang 15314, Indonesia

Neutron Scattering Laboratory

National Nuclear Energy Agency of Indonesia (BATAN)

Layout of the presentation

• Introduction• The instrument• The performance• The future programs



Neutron NewsVol. 17, issue 4October/November/December 2006Neutron Scattering Facilities in Serpong – Part 1



Neutron NewsVol. 18, issue 1January/February/March 2007Neutron Scattering Facilities in Serpong – Part 2



The Reactor – GA Siwabessy

Descriptive parameters of RSG – GAS

Power : 30MW (Thermal)Peak Thermal Neutron Flux : 2.5 x 1014 cm-2 s-1

CoreActive core volume (dm3) : 180Active core height (cm) : 60Loading (Kg 235U) : 8.675Number of fuel elements : 40Number of control elements : 8Fuel type : U3SiAl - MTR235U enriched (%) : 19.75235U density (g cm-3) : 2.96Moderator / coolant : H2O



Reactor Operation Schedule 2006

Reactor Operation Schedule 2007



~ 170 days operation/year

Neutron Scattering Laboratory - BATAN

Neutron beam instruments

(DN1-M) RSM : Diffractometer for Residual Stress Measurement(DN2) FCD/TD : Four Circle Diffractometer/Texture Diffractometer(SN1) TAS : Triple Axis Spectrometer(RN1) NRF : Neutron Radiography Facility(DN3) HRPD : High Resolution Powder Diffractometer(SN2) SMARTer : Small-Angle Neutron Scattering Spectrometer(SN3) HRSANS : High-Resolution Small-Angle Neutron Scattering Spectrometer



SMARTer

Low Angle Diffractometer LADI

Macromolecules Neutron DiffractometerMaNDi

Low Q Diffractometer LQD

AUstralia SANS AUSANS

A new 40m Australia SANS QUOKKA

MalaYsia SANS MYSANS

A Liquid And Disordered Materials Diffractometer ALADDIN

Small Angle Neutron Diffractometer SANDI

SANS-University of Tokyo SANS-U

SANS-JAEA SANS-J

A new 40m HANARO SANS ?36 meter Small-Angle Neutron Scattering Spectrometer - BATAN



1992 : Commissioned1992 – 1996 : Testing, setting up & calibration > wavelength, resolution*1996 – 1997 : Pre-amp & 2D-detector problems (Prof. Mortensen – RISØ)1997 : IAEA Expert Mission Workshop > Porasil sample

Dr. P.S. Goyal (BARC) Dr. A. Wiendenmann (HMI)

1998 – 2003 : Calibration > AgBE, Porasil, Polymers Setting up > pinhole, collimator, etc.

2003 – 2005 : Off > computer problem & TDC

Start from here by Edy Giri Rachman Putra

2005 – : Optimizing, calibration, alignment > AgBE, porasil, polymers, etc.

A new controlling & acquisition system A new instrument setting

Improving the performance

The time line of SMARTer



Sample environmentMagnetic permanentLow and high temperature furnaceStretching/drawing frame**Shear cell*Stop-flow cell*

Upgrading & improving the performance

Control systemWindows menu

Live on data collecting

• A new controlling & data collecting system• Pinhole & collimation alignment• A new sample changer system• A small furnace/heater for liquid sample• A new beam stop system• A new sample to detector distance• Wavelength calibration• Q-calibration• High temperature experiment < 100 C• Magnetic field experiment• Low & high temperature experiment*



Specifications



Instrumental parameters of SMARTer (36m SANS BATAN)

Beam port and neutron guide : S5 (radial), NG1Incident wavelength : 0.3 – 0.6 nm (VS = 3500 – 7000 rpm)Wavelength resolution : / ~ 10% - 20%Q-range : 0.02 < Q < 6 nm-1

Max. flux at sample position : 4 x 106 neutron/cm s(at = 0.32 and 22.5 MW)Beam size : min. 5mm in diameterSample to detector distance : 1.3m L 18mSample environment : open air atmosphere

small furnace/heater up to 150 °CData acquisition : OS LinuxControlling system : Windows 98

Speed (rpm)

Experimental Wavelength

Theoretical Wavelength

FWHM(Q)

Q/Q(%)

3500 5.66 Å 5.83 Å 0.114 10.8

4000 4.92 Å 5.10 Å 0.127 11.9

4500 4.35 Å 4.53 Å 0.133 12.4

5000 3.90 Å 4.08 Å 0.145 13.5

5500 3.52 Å 3.71 Å 0.155 14.3

6000 3.22 Å 3.40 Å 0.172 15.9

6500 3.02 Å 3.14 Å 0.186 17.5

7000 2.74 Å 2.92 Å 0.203 18.9

Performance

2D pattern from AgBE at = 3.22 Å



J. Appl. Cryst. 2007, 40, s447 - s452

Inter-laboratory comparison



E. Giri Rachman Putra, et al., J. Appl. Cryst. 2007, 40, s447 - s452




Sample-to-detector distance : 18mCollimation length : 18mWavelength (resolution) : 5.66 Å (11%)Pinhole settings : 666555Source aperture : 30 mm (dia)Sample aperture : 10 mm (dia)Beam stop : 50 mm (dia)Sample thickness : 1 mmSample transmission : 93%Collecting time : 2hrs



Experiment on Solid State Polymer Sample

Block copolymer PS-PEP




Experiment on Porous Materials

The best resolution

L1 = 18mL2 = 4m, 8m, 18mPinhole setting = 666555 (30, 30, 30, 20, 20, 20 mm in diameter)Collecting time = 1hr

Experiment on CuNiFe Magnetic Sample

0 kOe 420 kOe 840 kOe 10,000 kOe

H



Polymer solutions (F88 Pluronics)Tem

pera

ture

Temperature dependence



0.1

2

4

68

1

2

4

68

10

2

4

68

100

Inte

nsi

ty (

rela

tive

)

0.012 3 4 5 6 7 8 9

0.12 3

Q (1/Å)

KCl 1.5M KCl 1.2M KCl 1.0M KCl 0.8M KCl 0.6M KCl 0.4M KCl 0.2M KCl 0.1M KCl 0.05M theoretical

Salt

con

cen

trati

on

Polymer solutions (F88 Pluronics)

Salt concentration dependence



Porous silicaQ-calibration

1997Neutron Scattering LaboratoryNational Nuclear Energy Agency (BATAN)

SANS BATAN HMI



3

2

1

0

-1

-2

log

I

-2.5 -2.0 -1.5 -1.0 -0.5 0.0log Q

2005

HMI

Neutron Scattering LaboratoryNational Nuclear Energy Agency (BATAN)

SANS BATAN




3

2

1

0

-1

-2

log

I

-2.5 -2.0 -1.5 -1.0 -0.5

log Q

Porasil CPG-10-75Data was taken usingSMARTer

-3.8

2006

HMISANS BATAN




(late 2006)

HMI

Neutron Scattering LaboratoryNational Nuclear Energy Agency (BATAN)

3

2

1

0

-1

-2

log

I

-2.5 -2.0 -1.5 -1.0 -0.5log Q

Porasil CPG-10-75Data was taken using SMARTer11 December 2006

SANS BATAN




Problems at SMARTer



• Reactor run at 15MW• Neutron flux > getting lower• No preset count measurement• Intensity in relative scale• Low flux at low q-range

• Modify the beam stopper & rubber cover.• Test a new monitor detector & pre-amp.• Build a new system for preset count exp. (hard & software)!• Make a new sample aperture.• Modify the live on data acquisition program.• Modify the data reduction program.• Make a new system for 6 sample changers with temp. control (software).• Build a new sample exchanger.• Do some experiments to optimize the SMARTer!• Flux measurements!• Local, regional & international network (CRP, TC, etc)

Dr. Kohlbrecher’s (IAEA expert mission – December 2006) recommendation;



Things to do (future works)



Thank you for your attention!

36m sans batan (smarter) – indonesia “improvement the neutron intensity by focusing optics”...

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