JOINT INSTITUTE FOR NUCLEAR RESEARCH FRANK LABORATORY OF NEUTRON PHYSICS V. Shvetsov Summer practice. JINR, Dubna, July 14 2011

JOINT INSTITUTE FOR NUCLEAR JOINT INSTITUTE FOR NUCLEAR RESEARCH RESEARCH

FRANK LABORATORY OF NEUTRON FRANK LABORATORY OF NEUTRON PHYSICSPHYSICS

V. ShvetsovV. Shvetsov

www.jinr.ruwww.jinr.ru flnp.jinr.ruflnp.jinr.ruSummer practice. JINR, Dubna, July 14 2011Summer practice. JINR, Dubna, July 14 2011

Summer practice. JINR, Dubna, July 14 2011Summer practice. JINR, Dubna, July 14 2011

JINRJINR

VietnamPoland Romania USSR

Albania Bulgaria

Hungary

China

Mongolia

Czechoslovakia

GDR D.P.R.Korea

The agreement on the establishment of JINR The agreement on the establishment of JINR was signed on 26 March 1956 in Moscowwas signed on 26 March 1956 in Moscow



JINR basic facilitiesJINR basic facilities

Upgraded Nuclotron-M (2009)

+NICA (2013-2014)

second phase 2009

New reactor IBR-2M

2010IREN-I2008

DRIBs

JINR networks, including GRID technology

Participating in LHC, RHIC, TEVATRON… In future: FAIR, ILC …

FAIR

II.

Telecommunication channels:10 Gbps – July 2008, 40 Gbps – 2010,100 Gbps by the year 2015


EDUCATIONAL PROGRAMME

More than 300 students and postgraduates from Member States

are trained at the UC

A vitally important task is attracting of young people from all the Member States to science

JINR is a school of excellence for the Member States!

MSUMSU MIPTMIPT MEPIMEPIChairs: MIREAMIREA othersothers

JINR UNIVERSITY CENTRE

“Dubna” International University

The UC offers graduate programmes in the fields of:

Elementary Particle Physics Nuclear Physics Theoretical Physics Condensed Matter Physics Technical Physics Radiobiology

DIAS - THDubna International Advanced School

on Theoretical Physics

http://thsun1.jinr.ru/


FLNPFLNP

И.М.ФранкФ.Л.Шапиро

Д.И.Блохинцев

IBR ideaIBR idea Idea (1955) – D.I.Blokhintsev

Theory (1956) – I.I.Bondarenko, Yu.Ya.Stavisski

IBR theory was further developed by Shabalin, Govorkov, Asaoka, Larrimore, Blaeser, Schwalm, Kozik.


IBRIBR-30: -30: Reactivity modulatorReactivity modulator

But “Dragon” type of reactors could work only in a regime of single neutron pulses (1 pulse in several minutes or even hours). To increase the efficiency of the source for scientific research the possibility to produce many short pulses per second was required. And this option was realised in IBR type reactors.


1 – main modulator (235U disk), 2 – auxiliary modulator (235U disk), 3 – auxiliary modulator (tungsten rod), 4 – two stationary parts of the active core with reflectors, 5 – motor drive, 1а, 2а, 3а – schematic representation of gear machine (in reality gears are used, not belts as shown in the figure)

Instead of Instead of “tickling the dragon's tail”“tickling the dragon's tail”, Blokhintsev characterised the , Blokhintsev characterised the principle of IBR operation as principle of IBR operation as - «- «teasing tiger in a cage 50 times per secondteasing tiger in a cage 50 times per second». ».

IBRIBR-30-30 1969-20011969-2001

However, the neutron pulse width of about 50 μs appeared to be too long for

many nuclear physics experiments.

Could this fact become an advantage for experiments in other fields rather than

nuclear physics?

The first IBR was then upgraded into IBR-30 having the average power of The first IBR was then upgraded into IBR-30 having the average power of about 25 kWabout 25 kW


Pulsed boosterPulsed boosterIBRIBR + + electron cyclotronelectron cyclotron ( (I.M.Matora and S.P.Kapitsa, I.M.Matora and S.P.Kapitsa, 1965)1965)

1. Electron energy, MeV – 302. Peak current, mA – 60 803. Electron pulse width, μs – 1 34. Repetition rate, 1/s – 505. Mean reactor power

(ε = -5 103), W – 1000

Neutron pulse width was reduced considerably!


IBR-2MIBR-2M


IBR-2M on the world sceneIBR-2M on the world scene

C:\??? ?????????\neutron_source\ibr-2\IBR-2.exe


Neutron propertiesNeutron properties

AtomAtom

1010-8-8 cm cm

1010-1

3-1

3 cm

cm



fastfast

10- 12

10- 7

10- 1

107

Neutron energy, eV

10- 3

Temperature, K 10

1 10

3 10

- 3

UCNUCN thermalthermal

coldcold resonanceresonance

Summer practice. JINR, Dubna, July 14 2011Summer practice. JINR, Dubna, July 14 20110 .7 1 .0 1 .3 1 .6 1 .9 2 .2 2 .5

d , Å

Y 1 2 3 -C u /F eH ig h reso lu tio n0 .1 %

Y 1 2 3 -C u /F eL o w reso lu tio n1 %

cufe-h l


Time of Flight (TOF) techniqueTime of Flight (TOF) technique

2

310227.5

st

mLeVEn

2222

L

dL

t

dt

E

E

n

n

232108.2 nn E

mL

sdteVE

Detector

Flight path L, mSource

Collimator

Sample

dt

21

mod 6.1 nEsdt


FLNP ScienceFLNP Science

• Two directionsTwo directions::

– Neutron nuclear physics;Neutron nuclear physics;

– Condensed matter physics;Condensed matter physics;

• Basic facilitiesBasic facilities::

– IBR-2M;IBR-2M;

– IREN;IREN;


IBR-2M modernizationIBR-2M modernization

Reactor vessel Reactor vessel assemblingassembling

20092009 гг..


IBR-2M IBR-2M modernizationmodernization

Fuel cassettes Fuel cassettes imitators at the imitators at the

reactor vesselreactor vessel

20092009 гг..



New equipment for the New equipment for the automation and safety control automation and safety control systemsystem

20102010 гг..



Operator workplaceOperator workplace

20102010 гг..



IBR-2M buildingIBR-2M building, , October October 20102010


First power stage First power stage



•Physics of Nanosystems

•Structure and Dynamics of Functional Materials

•Complex Liquids and Polymers

•Molecular Biology and Pharmacology

•Structure of rocks and minerals

•Engineering Diagnostics

Fe(3-5 нм)

Сr(1-2 нм)


0.01 0.1 0.01 0.1

To=350 oC

To=800 oC

To=350 oC

95GeO2-5Eu

2O

3

To=800 oC

q, Å-1

94,9GeO2-5Eu2O3-0,1Ag

Nanosystem GeO2-Eu2O3-Ag: Luminescence control by nanoclusters formation

0 50 100 1500.0

3.0x10-4

6.0x10-4

9.0x10-4

1.2x10-3

1.5x10-3

94,9GeO2-5Eu2O3

-0,1Ag

95GeO2-5Eu

2O

3

Тo=550 0С

r, Å p(

r), a

rb.u

nits

Decrease of the nanoclusters size in about 2 times

AgAg dopingdoping

An increase in the intensity of luminescence excitation lines An increase in the intensity of luminescence excitation lines 77FF00 55LL66 ( (~395 nm) and ~395 nm) and 77FF00 55HH66 ( (~318 nm~318 nm) of Eu) of Eu3+3+

Spectra of luminescence excitation of Eu3+ ions in 95,0GeO2-5Eu2O3 (1) and 94,9GeO2-5Eu2O3-0,1Ag (2) SANS curves at different annealing temperatures

Cluster size distribution functions

A.V.Belushkin et al., Adv. Nat. Sci.: Nanosci. Nanotechnol. (2010)


20 30 40 50 60 70 80 90

1000

2000

3000

4000

36 38 40 42

2 (deg.)

Inte

nsity

(ar

b. u

nits

)

2 (deg.)

0 GPa

3.9 GPa

10 GPa

M-1

M-2

O

NaCl

(a)10 GPa

3.9 GPa

Pnma

C2/c

P21/c

C2/c

0 GPaM-1

M-2

O

(b)

abc

d(3z2-r2)

d(3x2-r2)

d(3y2-r2)

Structure and magnetic properties of multiferroic BiMnO3 in wide range of thermodynamic parameters (temperature, pressure)

Crystal structure of BiMnO3 at ambient conditions

Neutron diffraction patterns of BiMnO3 at elevated pressures

Magnetic and orbital order in high pressure phase of BiMnO3

D.P.Kozlenko et al., Phys. Rev. B (2010)


Analysis on magnetic properties, morphology and structure of ferrihydrite particles produced in vivo by Klebsiella oxytoca bacteria.

Structural and magnetic investigations of biogenic ferrihydrite nanoparticles

SEM images of two samples containing ferrihydrite nanoparticles obtained by means of two different methods; sample Fe12 (a) and sample Fe34 (b).

b)a)

SAXS data from biogenic ferrihydrite (F12) dispersion sample. The parameters obtained from this fit are the cylinder radius R; and height L

M. Balasoiu, et al., Romanian Journal of Physics Vol.55, Issues 7-8, 2010

Magnetization curves of Fe12 and Fe34 powders at different temperature experimental values T= 4.2K (1); 12K (2); 22K (3) and 33K (4). Lines represent the results of the calculations

The micrograph of a Klebsiella oxytoca bacterium in a 15th day culture.

48.7 0.21R 21 0.41L Ǻ Ǻ

Rod particle model 55.8 0.33gR Ǻ

SANS data from biogenic ferrihydrite (F12) dispersion sample.


Localization of End Groups in Dendrimers by SANS and SAXSLocalization of End Groups in Dendrimers by SANS and SAXS

Theoretical investigation of density distribution

Experimental results by SANS and SAXSBy SANS By SAXS


Steel 40Х4G18F(Fe0.748Mn0.179V0.013Cr0.042C0.018)

Heat treatment Reinforcednanoparticls

VC, nm

Hardness HB,Kgf/mm2

Microstrain,10-4

Quenching - 221 4.08

Quenching+aging 600oC, 12h

35 313 5.44

Quenching+aging 700oC, 12h

910 282 14.45

The lattice parameter dependence for 40Х4G18F steel vs. annealing time at two temperatures:600оС и 700оС.

Comparison of neutron diffraction patterns for 40Х4G18F steel samples aged at 600оС и 700оС.

Formation of nanoparticles on quenching


IREN sourceIREN source

Electron accelerator Electron accelerator driven neutron sourcedriven neutron source


Electron linac as neutron sourceElectron linac as neutron sourceElectron linac as gamma sourceElectron linac as gamma source

ee--

Heavy metal targetHeavy metal target

Gamma quanta distribution in case Gamma quanta distribution in case of 3 mm W converterof 3 mm W converter

First stage: First stage: Bremsstrahlung Bremsstrahlung gamma gamma production within production within heavy targetheavy target


Electron linac as gamma sourceElectron linac as gamma source


Electron linac as neutron sourceElectron linac as neutron sourceSecond stage: Second stage: gamma gamma interaction with interaction with target nuclei and target nuclei and neutrons neutrons productionproduction

nn

nn nn

nn

nn

nn


IREN arrangementIREN arrangement

n-beamschannels

e-guide

Nonmultiplyingtarget

Modulator

Acc. sectionS-band buncher

Electron gun

Target hall

Acc. 1-stlevel

0

5 m

Acc.2-ndlevel

Th2129klystron

Magneticspectrometer


C1 ( 16 coils)

КС1

КС2

помещение 128

Axes of the neutron beams

АС

Buncher

МЛ2

Q4

Q5

Q6

Q7

K4

Q8

Q9

MS

Q1/КЗ

КГ

КИЭМЛ1

Electron guide

Accelerating

Q2

Q3

Section

Target axis

Electron Gun

+7.50

+9.50

+15.62



Nuclear Physics with Neutrons - FundamentalNuclear Physics with Neutrons - Fundamentaland Applied Investigationsand Applied Investigations

(theme (theme 03-4-1036-2001/201003-4-1036-2001/2010))

• Experiments at IREN;Experiments at IREN;

• Neutron properties;Neutron properties;

• Experiments with ultracold Experiments with ultracold neutrons in ILL;neutrons in ILL;

• Violations of fundamental Violations of fundamental symmetries in in neutron-nucleus symmetries in in neutron-nucleus interactions;interactions;

• Investigations of properties of Investigations of properties of atomic nuclei;atomic nuclei;

• Applied research;Applied research;

0 2 4 6 8 10 120

200

400

600

800

1000

1200 Pulse 7. 31MJ Pulse 8. 30MJ Pulse 9. 23MJ Pulse 10. 14MJ Pulse 11. 31MJ Pulse 12. 16MJ Pulse 13. 25MJ

Lines - Maxwell: L=11.572 m, V=2200 m/s

n-n scattering 2008Total spectrum of 10 channels

De

tect

or

cou

nt

rate

, n

/ms

t,ms


Experiments at IRENExperiments at IREN

Element \Sample S-1 S-2

Os 21.0 6.5 19.5 5.5

Ir 13.7 3.9 13.0 3.9

Pt 13.0 3.9 14.3 3.9

Au 0.059 0.018 0.017 0.006

Ru 4.3 1.3 3.9 1.3

Analysis of the boron content in ceramics by neutron transmission

at IREN

Analysis of the Platinum group elements content in the geological

sample by Neutron Resonance Capture Analysis

IREN operation time 470 hoursIREN operation time 470 hours


Experiments with ultracold Experiments with ultracold neutrons in ILLneutrons in ILL

2007 -2009.

g n 3

n

m a1 1.8 2.1 10

m g

UCN Scheduled beam time for the test of Scheduled beam time for the test of new spectrometernew spectrometer

27 October – 17 December 201027 October – 17 December 2010

Estimated precision Estimated precision 1010-4-4 will be reached will be reached

probably during 2011 probably during 2011


Neutron and gamma detectors for Neutron and gamma detectors for spacecraftsspacecrafts

Gamma SensorGamma Sensor

HENDHEND

2001 Mars Odyssey2001 Mars Odyssey

NSNS



Energy, MeV

10-9 10-8 10-7 10-6 10-5 10-4 10-3 10-2 10-1 100 101 102

N(E

), n

eu

tro

ns/

(cm

2∙ M

eV)

10-4

10-3

10-2

10-1

100

101

102

103

104

105

106

ground without waterground + 50 % uniformly dispersed watertop water layer 20 cm water layer 20 cm lies 1 m beneath the surface

Resonance Resonance T

herm

alT

herm

al

Albedo neutron spectra at a height of 400 km normalized to 1 n/cm2 neutron flux from Mars surface covered with CO2 layer 15 g/cm2 (calculated by MCNP4C)


NSNSHENDHEND

COCO2 2 SEASONAL VARIATIONSSEASONAL VARIATIONS

(3 earth year ~ 1.5 martian year)(3 earth year ~ 1.5 martian year)



Calibration of the Lunar Calibration of the Lunar Exploration Neutron Detector Exploration Neutron Detector

(LEND) (LEND)


Sector of NAA is involved in biotechnological studied in collaboration with the Institute of Physics, Tbilisi, Georgia, providing analytical investigations. In 2010 a paper “MICROBIAL SYNTHESIS OF SILVER NANOPARTICLES” has been prepared to be submitted to international journal NANO RESEARCH (http://www.thenanoresearch.com/).

Visualization of nanoparticles of silver produced by bacteria Streptomyces glaucus 71 MD was performed by Scanning Electron Microscope (SEM) in the Institute of Crystallography in Moscow. Quantitative assessment of nanoparticles is planned for the beginning of 2011 at the reactor IBR-2M.

http://www.thenanoresearch.com/


MethodicMethodic

• Neutron spectrometers;Neutron spectrometers;

– Detectors;Detectors;

– Sample environment;Sample environment;

– Hardware & software; Hardware & software;

• Cryogenics;Cryogenics;

• Network and computing;Network and computing;


Schematical layout of the PSD 3He gas detector of DN-6

Development of 32-section “Ring” 3He detector Development of 32-section “Ring” 3He detector of thermal neutrons of thermal neutrons

The technical documentation for fabrication of the 3He detector system was prepared and one separate module of the detector section has been tested


Test module Test module in assembly Amplitude spectrum

In order to estimate influence of border effects and to measure parameters of the detector signals a test module have been created. Module imitates a section of the 32-sections detector. It separated on 6 independent elements. Signals received from each element separately.

Development of 32-section “Ring” 3He detector Development of 32-section “Ring” 3He detector

of thermal neutronsof thermal neutrons


Electronics & computingElectronics & computing • The development of new unified electronic blocks for

acquisition and accumulation of raw data on the REFLEX, EPSILON, HRFD and DN-6 diffractometers has been started. These diffractometers will employ different detector systems with unified hardware electronic blocks:

- helium neutron counters, - scintillate plates,- ring-shaped multisection MWPC-based detector. - In 2010 the first version of multicounter DAQ block

(for 16 detector elements) was developed.


Electronics & computingElectronics & computing

• Work is underway on enhancement of the software package Sonix+ to automate adjusting/positioning processes of the spectrometer.

• Modernization and repair of electronic equipment and preparation of spectrometers to the reactor start-up is performing in according with plan.

• In the summer 2010 one intellectual multilevel network router of WS-3560 series was purchased.

This router can operate in different configurations of Fast Ethernet and Gigabit Ethernet and provide high level of accessibility, scalability, safety and control. A limited set of communication modules for this router was purchased as well. Now all equipment prepared for testing and installation in one of the IBR-2M experimental halls.


Current state Current state of beam 7, IBR-2Mof beam 7, IBR-2M

New head part for neutron guides of beam 7- neutron splitter has been assembled

Concrete pillar has been reconstructed

Top view 1

Epsilon

SKAT

Corridor for the guides

Diffractometer "Epsilon"

Diffractometer "SKAT"

Pillar

AC drives

22 kW for the background chopper 2.2 kW for the λ-choppers

Background chopper and λ-chopper

Background- and Background- and λλ-chopper system for beam 7-chopper system for beam 7


Development of software for Monte Carlo Simulations (VITESS) of neutron spectrometers and simulations

VITESS Graphical user interface

The main goal to achieve when upgrading or building a new neutron scattering instruments at the IBR-2M pulsed reactor is to increase the neutron flux and the resolution of the spectrometer (or to achieve Qmin = 0.003 - 0.0007 Å-1 for wavelength range and l = 3 - 15 Å respectively) and to give possibilities to use the significant sample sizes up to 4x4 cm if necessary. The value Qmax considers to be 0.5-1 Å-1: but it depends from the outer sizes of PSD detector or additionally installed detectors.

The realized and developing projects are:

1) Instruments of IBR-2M reactor and European Spallation Source2) Neutron transport: conventional, convergent, parabolic and elliptic neutron guides3) High Resolution Crystal Spectrometers (incl. Backscattering)4) Small Angle Neutron Scattering Diffractometers5) Neutron Spin Echo (incl. NRSE – resonance spin echo)6) TOF Spectrometers7) Powder Diffractometers8) Reflectometers (GRAINS reflectomreter)9) Neutron Spin Echo spectrometers with rotating or gradient magnetic fields10) Neutron refraction lenses and focusing SANS diffractometers11) Drabkin resonator

Current activity: a concept for the modernization of a SANS instrument at the IBR-2M reactor:


GRAINS spectrometer (10th beam of the IBR-2M)

All VITESS modules for GRAINS simulations were successfully developed and tested. First results (including analytical approach) are obtained and now is in press

Complex of moderators of the IBR-2M reactorComplex of moderators of the IBR-2M reactor

1.1. Main moveable reflector, Main moveable reflector, 2.2. Auxiliary moveable reflector, Auxiliary moveable reflector, 3.3. Fuel assembly, Fuel assembly, 4.4. Stationary reflector,Stationary reflector,

5.5. Cold moderators, Cold moderators, 6. Emergency system, 6. Emergency system, 7.7. Water moderators,Water moderators,8.8. Control rods; Roman Control rods; Roman

characters mark numbers of characters mark numbers of extracted neutron beams)extracted neutron beams)

Solid mesitylene as a material for cold moderatorsSolid mesitylene as a material for cold moderators

Tm = 227 K

mesitylenemesitylene mm-xylene-xylene

Tm = 225 K

Mixture with m-xylene or Mixture with m-xylene or pseudocumene is of glassy pseudocumene is of glassy structure, and has good neutron structure, and has good neutron thermalization property. thermalization property.

Solid beads of the frozen mixture Solid beads of the frozen mixture of mesitylene and m-xyleneof mesitylene and m-xylene

Principal scheme of the IBR-2M Principal scheme of the IBR-2M moderator systemmoderator system

1. Cold moderator

2. Charging pipeline

3. Charging device

4. Helium refrigerator

5. Heat exchanger

6. Helium blower

7. Primary helium loop

8.

9.

Secondary helium loop

Used mesitylene receiver

1

2

3

4

5

6

7

9

8

HeHe

The full scaled model of the conveying path and The full scaled model of the conveying path and technological system of the IBR-2M cryogenic moderatortechnological system of the IBR-2M cryogenic moderator

1

2

3

5

4

1 – camera-imitator of cryogenic moderator, 2 –heat exchanger with helium blower, 3 - cryogenic pipelines from\to refrigerator, 4 – charging device, 5 – transport cryogenic pipeline

5

1

2

4

3

Chamber-imitator of cold moderator with triple glass Chamber-imitator of cold moderator with triple glass windowwindow

Fulfillment of the chamber-imitator of cold moderator Fulfillment of the chamber-imitator of cold moderator by mesitylene beads (views through the windows)by mesitylene beads (views through the windows)

Complete loading of the chamber (18 cm x 18 cm x 4 cm) by beads. Temperature inside is ~50K(1 l of volume of cryogenic moderator is ~ 27 000 of beads )

View through the windows into the chamber


Neutron detectorsNeutron detectors

Neutron monitor with Neutron monitor with Li coated cathodeLi coated cathode 2D PSD with delay 2D PSD with delay

line readoutline readout


2D monitor PSD 100x100 2D monitor PSD 100x100 mm2mm2

Direct neutron beam monitorDirect neutron beam monitor

Designed and constructed for FRM-2 Designed and constructed for FRM-2

(Germany)(Germany)

Parameter Value

Sensitive area 100 x 100 mm2

x 4 mmy 4 mm

Sensitivity for thermal neutrons

10-3 – 10-6

Range of neutron wavelength

0.4 Å – 12 Å

Input beam weakening >5%

Count rate 1 – 100 kHz

Readout Delay lines

Position resolution (FWHM)


IBR-2 measurementsIBR-2 measurements

Spectra of the Spectra of the 22D monitorD monitor, , measuredmeasured at IBRat IBR-2-2 reactor reactor

Profile of the channelProfile of the channel №10 №10

MaskMask ( (CdCd))Profile of the channel Profile of the channel №6№6bb

Profile of the channelProfile of the channel №10 №10 with mask with mask



Profile of the IBR-2 channel Profile of the IBR-2 channel №7№7aa

Profile of the channelProfile of the channel №7 №7aa

Size of the beam50x160 мм 2 ± 4 mm 2

Average intensity ≈ 1,8 * 106 n/sm2*sec.

Sum on Y-axisSum on Y-axis


1D PSD 200x80 mm1D PSD 200x80 mm22

Multi-purpose instrument Multi-purpose instrument

for neutron scattering for neutron scattering

measurementsmeasurements

Parameter Value

Sensitive area 200 x 80 mm2

Position resolution (FWHM)

x 1,8 mm

Sensitivity for thermal neutrons

60%


0.4 Å – 12

Channel nonlinearity >5%

Count rate 1 – 100 kHz

Readout Delay lines



Diffraction spectraDiffraction spectra of theof the (La(La0.10.1PrPr0.90.9))0.70.7CaCa0.30.3MnMn0.30.3 sample, measured at the channel sample, measured at the channel

№5№5. At low temperatures it separated at FM-metallic and AFM-CO-insulating . At low temperatures it separated at FM-metallic and AFM-CO-insulating

mesoscopic phases.mesoscopic phases.

Spectrum of theSpectrum of the MMgO/(4.7nm)Fe/(4.7nm)V]10/[(1ML)Fe/(1ML)V]17/(36.5nm)V/(2nm)PdgO/(4.7nm)Fe/(4.7nm)V]10/[(1ML)Fe/(1ML)V]17/(36.5nm)V/(2nm)Pd multilayer multilayer

sample measured at the refletometer REFLEX (channel sample measured at the refletometer REFLEX (channel №9№9))

T=10T=10˚K˚KT=290T=290˚K˚K


2D 2D PSDPSD 222525xx222525 mm mm22

Parameter Value

Active area 225 x 225 mm2

x 2 mmy 2 mm

Efficiency 50%


0.4 Å – 12 Å

Channel nonlinearity <20%

Count rate 1MHz

Readout Delay line

Coordinate resolution (FWHM)

DevelopedDeveloped in frame of MinPromNauk grant in frame of MinPromNauk grant №02.452.11.7044 №02.452.11.7044 fromfrom 12.04.06 12.04.06

Testing are startedTesting are started


ElectronicsElectronics

Scheme of the electronicsScheme of the electronics

CrateCrate NIM with analog electronicsNIM with analog electronicsPre-amplifiersPre-amplifiers


PCI-DAQPCI-DAQ boardboard

PCI DAQ boardPCI DAQ board

Two main operating modes are provided: histogram (on-line sorting of data and building of spectra) and "list" (accumulation of raw data with subsequent off-line processing). In the regime of the accumulation of histograms the effectiveness of the DAQ system is 105 event/s, and in the raw data mode effectiveness is up to 8•105 event/s.

Created in cooperation with HMI, Berlin. It comprises 8-channel TDC of F1 type (Acam), FIFOs of different types, CPLD, FPGA, 256 Mbyte histogram memory and DSP TMS 320C6711. The DAQ board has a PCI-interface and is installed directly in the case of PC.


New PCI-DAQNew PCI-DAQ boardboard

Projected PCI-DAQ boardProjected PCI-DAQ board

A new DAQ board has been designed for 1D and 2D MWPC detectors with delay line data readout. This board contains the NIM-TTL signal level converter; 8-channel integrated time-digital converter (TDC-GPX); programmed logic matrix (FPGA) comprising about 6К of logic elements; 1Gbyte histogram memory, which makes it possible to accumulate three-dimensional spectra of size of up to 512×512×1024 of 32-digit words, and high-speed interface with an optical communication link to a personal computer. Logic and time simulation of work of the board has been performed using the Quartus II package. As a result, it has been demonstrated that the rate of data reception, filtration and accumulation in the board runs as high as 2 million events/s. Real registration rate (taking into account data transfer and recording into a computer) is no less than 1 million events/s.Now a new board is in the pilot production stage.


SoftwareSoftware

SSoftware complex based on SONIX+oftware complex based on SONIX+

• integrated inintegrated in SONIX+ systemSONIX+ system

• allows fully automates experimentallows fully automates experiment

• based on thebased on the Python script Python script

languagelanguage

SSoftware complex based on ROOToftware complex based on ROOT

• real-time data observationreal-time data observation

• currently used for detectors testing currently used for detectors testing

and in BER-II reactor (together with and in BER-II reactor (together with

CAERESS)CAERESS)

• based on the ROOT librarybased on the ROOT library


Thank you for Thank you for your attentionyour attention

Documents

JOINT INSTITUTE FOR NUCLEAR RESEARCH FRANK LABORATORY OF NEUTRON PHYSICS V. Shvetsov Summer practice. JINR, Dubna, July 14 2011