Progress on Nuclear data Measurements in China · Progress on Nuclear data Measurements in China...

Progress on Nuclear data

Measurements in China

Xichao Ruan

WPEC-2018, May 14-18, 2018, Paris, France

China Nuclear Data Center

China Institute of Atomic Energy

Progress of ND measurements in the following

institutes are collected

China Institute of Atomic Energy Xichao Ruan

xichao_ruan@126.com

Highlights in 2017 1. (n,2n) measurement with HeSAN 2. Nuclear data benchmark experiments 3. Progress of CSNS Back-n

1. (n,2n) measurement with HeSAN

HeSAN (氦-3): He-3 SphericAl Neutron Detector Array

110 He-3 counters uniformly distributed in a spherical PE

moderator

• Insensitive to gamma rays

• Detection efficiency

acceptable (~33% for 252Cf

source)

• Spherical design makes the

efficiency more

independent on energy

5

shielding Accelerato

r roo

m d-T source

d beam

Experimental setup：

Neutron beam

HeSAN Beam dump

collimator

6

First measurement on 93Nb(n,2n) shows HeSAN work well

2. Nuclear data benchmark experiment

头部

32.6°

屏蔽网

倍加器大厅

配电

室

实验大厅

偏转磁铁

11000

6860

8400

55004500

6500

墙厚250

11400

11200

6250

2500

2400

800*8004140

2000 样品探测器

Measure the neutron leakage spectrum from slab samples for different angles with a 14 MeV d-T neutron source

D-T neutron

source

Slab

sample

neutron

detector

The collimator system

D-T neutron

source

Slab

sample

neutron

detector

238U+C combined slab sample

5cm U+10cm C样品结果

Iron samples with different size

不同厚度铁样品60°，120°泄漏中子飞行时间谱实验结果和模拟结果比较

1. The beam line construction finished in July, 2017 2. First proton beam on target in Aug., 2017. 3. Commissioning experiments:

1) beam test (flux, beam profile, backgrounds) finished in Mar. 2018. 2) capture cross section measurement with C6D6 detector (Tm-169) finished in April, 2018. 3) fission cross section measurement with a parallal ionization chamber (U-236) finished in May, 2018. 4) 6li(n, ) reaction cross section measurement underway.

3. Progress of CSNS Back-n

Beam line for ND

measurement

The back-streaming neutron beam of CSNS

Hall 1

(n,lcp)

Hall 2

(n,f) and (n,)

Layout of the back streaming neutron beamline

Spallation target Proton beam

Neutron beam

The CSNS Back-n

15

Neutron beam characteristics

Energy range: eV to 100 MeV Flux: ~8105/cm2/s (10 kW, 60 beam spot) Beam spot: 30，60，9090 mm

16

First experiment on 169Tm(n,g) reaction finished in April,2018

Au

Tm

Peking University

Prof. Guohui Zhang

ghzhang@pku.edu.cn

56,54Fe(n, α)53,51Cr Cross Sections in the MeV Region

• (n,) reaction cross section measurement in the 5.0-11.0 MeV region

for 54Fe and 56Fe

4 8 12 16 200

10

20

30

40

50

60

56Fe(n, )53Cr

(a)

ENDF/B-VII.1

JEFF-3.3

JENDL-4.0

BROND-3.1

ROSFOND-2010

CENDL-3.1

JEFF-3.1/A

JEF-2.2

JENDL-4.0/HE

JENDL/HE-2007

FENDL-3.1c

EAF-2010

TENDL-2015

Talys-1.8

Talys-adjust

Corrected Grimes (1979)

Corrected Paulsen (1981)

Corrected Baba (1994)

Corrected Sterbenz (1994)

Saraf (1991)

Wang (2015)

Present

Cro

ss s

ecti

on

(m

b)

En (MeV)4 8 12 16 20

0

20

40

60

80

100

120 Fan （1985） Bahal (1985)

Greenwood (1987)

Meadows (1987)

Ikeda (1988)

Lu (1989)

Ercan (1991)

Meadows (1991)

Saraf (1991)

Meadows (1991)

Grallert (1993)

Meadows (1993)

Meadows (1996)

Gledenov (1997)

Mannhart (2007)

Wang (2015)

Present

ENDF/B-VII.1

JEFF-3.3

JENDL-4.0

BROND-3.1

ROSFOND-2010

CENDL-3.1

JEFF-3.1/A

IRDFF-1.05

IRDF-2002

IRDF-2002G

JENDL-4.0/HE

JENDL/HE-2007

FENDL-3.1c

EAF-2010

TENDL-2015

Talys-1.8

Talys-adjust

Pollehn (1961)

Chittenden (1961)

Cross (1963)

Salisbury (1965)

Rao (1967)

Singh (1972)

Maslov (1974)

Molla (1977)

Fukuda (1978)

Paulsen (1979)

Artemev （1980）

Cro

ss s

ecti

on (

mb)

En (MeV)

(b)

54Fe(n, )51Cr

A shoulder was observed around

10 MeV, the reason is unknown

2018-5-15

ADS related nuclear data

measurements at IMP,CAS

(2017)

Dr. Zhiqiang Chen

zqchen@impcas.ac.cn

ADS Nuclear Data Laboratory

Institute of Modern Physics,

Chinese Academy of sciences (IMP,CAS)

Nuclear data benchmark experimental setup at CIAE

sample dimension Angle

Polyethylene 10cm*10cm*5cm 60°

Gallium 10cm*10cm*5cm, 10cm*10cm*10cm,

Ø13cm*3.2cm, Ø13cm*6.4cm

60°,120°

Tungsten(block) 10cm×10cm×3.6cm, 10cm×10cm×7.2cm 60°,120°

Tungsten(Granular) 9.8*9.9*7.2cm ,（granular diameter:1mm） 60°

Graphite Φ13*2cm, Φ13*20cm 60°,120°

SiC Φ13*2cm, Φ13*20cm 60°,120°

238U 10cm*10cm*2cm, 60°

238U 10cm*10cm*5cm, 10cm*10cm*11cm 60°,120°

W+U W:10cm*10cm*3.5cm , U: 10cm*10cm*2cm 60°

W+U+C W:10cm*10cm*3.5cm, U: 10cm*10cm*2cm

C: 10cm*10cm*2cm

60°

W+U+C+CH2 W:10cm*10cm*3.5cm , U: 10cm*10cm*2cm

C: 10cm*10cm*2cm, CH2: 10cm*10cm*2cm

60°

U+C U: 10cm*10cm*5cm , C: 10cm*10cm*10cm 60°

U+C+CH2 U: 10cm*10cm*5cm , C: 10cm*10cm*10cm

CH2: 10cm*10cm*10 cm

60°

Benchmark experiments with 14MeV neutron

(collaborated with CIAE)

14MeV n + 238U

10cm*10cm*2cm@60° 10cm*10cm*5cm@60° 10cm*10cm*11cm@60°

10cm*10cm*5cm@120° 10cm*10cm*11cm@120° Evaluated neutron cross sections for 238U

14MeV n + W-U-C-CH2 3.5cm W+ 2cm U@60° 2cm U@60°

3.5cm W+2cm U+ 2cm C + 2cm CH2@60° 3.5cm W+ 2cm U+2cm C @60°

14MeV n + U-C-CH2 5cm U + 10cm C @60° 5cm U @60°

5cm U+ 10cm C+10cm CH2 @60°

2018-5-15

Shanghai Institute of

Applied Physics

Dr. Jingen Chen

chenjg@sinap.ac.cn

15 MeV LINAC driven neutron source

Neutron yield at full power 1011s-1

Energy resolution for thermal neutron <1%

Neutron flux 104 s-1cm-2

Neutron Flight length 6 m

Electron energy 15 MeV

Electron average current 0.1 mA

Electron power of the linac 1500 W

Electron pulse width 3-3000 ns

Total neutron cross

section;

Thermal neutron

scattering;

Activation measurement;

Reactor material boron

equivalent determination;

Neutron spectrum & time-energy calibration

2

0

72.3 [ ][ ]

[ ]

L mE eV

t t s

Preliminary measurement of total Cross

section for Graphite/Be/Th

2018-5-15

Shanghai Institute of Applied Physics

Dr. Hongwei Wang

Wanghongwei@sinap.ac.cn

Shanghai Laser Electron Gamma Source-SLEGS

2008 - 2025

二、线站整体布局 Photonuclear Data Measurement@SSRF/SLEGS

Light Source End station Frant-End

Technical design - Layout

Beamline

(1) Light source: electron, laser, LCS chamber(slanting mode), mirror chamber(back scattering).

(2) Front end: Include Mirror chamber.

(3) Beamline:Collimators, attenuator, energy detector, position detector, flux detector and absorber.

(4) End station: (,n） Neutron detector， (,p/ɑ） Charged particle detector， (,） Gamma detector

As a beamline of SSRF, SLEGS has been formally incorporated into the phase II project of

SSRF. Design of SLEGS has been carried out in 2016 and will be open for users from 2022.

Shanghai Laser Electron Gamma Source

SLEGS Scientific goals:

Photo-nuclear physics:

Nuclear Astrophysics：nuclear reactions which have a critical impact on stellar

evolution and nucleosynthesis of elements

Nuclear structure GDR and NRF, etc.

Research on the anti- radiation properties of aerospace device and

calibration for the X/ detector equiped on aerospace device

Nuclear waste transmutation research and nuclear safety,

Gamma-ray imaging techniques (in particular: isotope imaging technology), etc.

Properties

Energy range： 0.4-20 MeV

Energy resolution ： ~5%

Divergence angle： 0.5mrad(milli-radian)

Flux： (0.2-4.2)×107 phs/s

Thank you for your attention !