Development and application of electron linear accelerator of CIAE

YU Guo-long

(13718666180@163.com)

China Institute of Atomic Energy

IAEA International Conference on Applications of Radiation Science and Technology

(ICARST)Vienna, Austria, 24–28 April 2017

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1. Introduction

2. Non-destructive Testing (NDT) Electron linac

3. Irradiation linac

4. Our plan

Content

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China Institute of Atomic Energy

1. Introduction

China experimental fast reactor HI-13 tandem accelerator 100MeV proton cyclotron

Founded in Beijing in 1950

Has 3000 staff, 700 researchers

With facilities of reactors, accelerators,

radiochemistry and experimental

instruments

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reactor –based BNCT

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Security Inspection Products and Applications

1. Introduction

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Since 1958, more than 50 accelerators were developed and successfully applied to various field.

China's first electron linear

irradiation accelerator

China’s first 6MeV electron linear

accelerator for customs inspections

China's first 10MeV/15kW

electron irradiation acceleratorChina's first self-shielding electron

beam sterilization accelerator

China's first S band NDT

electron linear accelerator

China's first C band NDT

electron linear accelerator

China's first L band electron

linear accelerator

The first X band electron linear

accelerator for customs container

inspections

Medical cyclotron

1. Introduction

2MeV electron irradiating linac10MeV high power electron irradiating linac

NDT electron linac

Industrial electron accelerators developed by CIAE in past 5 years

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1. Introduction

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• The X-ray generated by the linac, with the characteristics of high energy, high penetration, high dose rate and small focus spot size, can be used as radiation source for

‐ Industrial NDT radiography

‐ radiation real-time imaging

‐ computed tomography scan (i.e. industrial CT)

‐ customs security inspection

‐ etc.

• The NDT linac are widely applied to non-destructive testing of ‐ iron and steel castings

‐ solid propellant rocket motor

‐ pressure vessel

‐ large boiler

‐ large shell

‐ etc.

2. NDT Electron linac

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Aviation Spaceflight Fire work weapons

Nuclear power Petrochemical industry

High speed railway Motor-engine

Air separation

NDT linac

2. NDT Electron linac

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NDT linac system Modulator

Cooling Unit

Cables

X-ray Head and

Multi--dimensional

Motion System

Water Tubes

Control system

2. NDT Electron linac

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NDT linac Products Family

Model No.

specification

NoteX-ray beam energy

MeV

Max X-ray dose rate

cGy/min

GT-2/200 2 200 Single energy type

GT-2D/200 1 or 2 200 Dual-energy type

GT-4/500 4 500 Single energy type

GT-4D/500 2 or 4 500 Dual-energy type

GT-6/1000 6 1000 Single energy type

GT-6D/1000 4 or 6 1000 Dual-energy type

GT-9/3000 9 3000 Single energy type

GT-9D/3000 6 or 9 3000 Dual-energy type

GT-12/5000 12 5000 Single energy type

GT-12D/5000 9 or 12 5000 Dual-energy type

GT-15/12000 15 12000 Single energy type,

GT-15D/12000 12 or 15 12000 Dual-energy type

2. NDT Electron linac

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An example of application

2. NDT Electron linac

A7

A6

A5

A12

A14

B11

B10

B9

B12

B13

C11C12

C13

C10

C9

D12

D13

D14

D15

D11C8

E8E9

E10

E11

E7 F5

F6

F7

G4G5

H22

H21

H20

H19H1

8

H17

H16

H15

H14

H13

I16

I15

I14

I13

I12

I11

I10

I9

5

16

17

18

19

20

21

33

32

34

31

30 48

49

50

47

45

63

64

66

626

160

92

93

94

74

73

75

80

95

96

979

1

112

113

111

110

109

108

107

A13

A4

A11

7

6

67

76

51

81

D9

D10

H12

44

46

65

90

Ir192

Co60

LIN

AC4-6

ME

V

A AH6~H17 H26

H23

C1~C14

D1~D16

E1~E12

F1~F8

G1~G6

I1~I16

Ir192透照区（不小于105mm）

H1~H5

H18~H22

A1~A14

B1~B14

Ir192 Co 60 LINAC 4-6MEV

H24

H25

Ir192透

照区（不小于

120m

m）

不小于60mm

为避免厚度差影

响，贴附补偿泥

H27

H27为Ir192源透照

胶片

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2. NDT Electron linac

Performance of the dual energy model

• Max Energy: 6MeV

• Penetrability: 50mm~280mm equivalent steel

• Work mode: 4MeV, 6MeV and alternate

• Max X-ray dose rate: 1000cGy/min@1m

• Pulse width: 0.5μs~5μs adjustable

• focal spot size: <2mm

• Pulse to pulse reliability: ±1%

Take GT-6D/1000 for instance:

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2. NDT Electron linac

Oct 2014, the PROPOSAL was publicized and promoted in the IEC

TC45 meeting in Las Vegas

Dec 8 2014, the NP was voted and approved.

Feb~ Apr 2015, the WD was finished and submitted to circulate and

solicit amend advise

Jul~ Aug 2015, the CD was built and improved based on the improved

WD

At IEC/TC 45 Plenary and WGs Meeting held in Gyeongju, Korea

from March 03~12, 2016, The CD was consulted and formed to CDV

In September 2016, CDV was approved in favor of 93.3%

In February 2017, FDIS passed the voteInte

rnational sta

ndard

IEC 62976 Ed.1 Industrial non-destructive testing equipment

– Electron linear accelerator

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3. Irradiation linac

• August 2002, self-shielding electron beam device base

on 2MeV electron linac was built for killing virus and

germs (including anthrax germ or spres) in mails after

911.

Energy: 2MeV Beam Power: 1kW Ability: 5000~10 000 mails/day

• The first self-shielding accelerator in China!

Mail irradiation system

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Energy: 2MeV

Beam (average): 500uA

Beam average power: 1kW

Scan width: 500mm

• Self – shielded electronic accelerator for medical hydrogel production

Online continuous operation !

Antipyretic gel

3. Irradiation linac

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• December 2007, 10MeV / 15kW irradiation accelerator

demonstration project of China was officially completed

and put into operation.

3. Irradiation linac

10MeV high-power electronic irradiation accelerator

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• Electron beam energy: 10MeV

• Beam power: average 20KW adjustable

• Scan width: > 800mm(400mm from titanium

window )

• Scanning frequency 5 ~ 20Hz continuously

adjustable

• Transmission chain width: 800mm

• Unit length Delivery weight: ≤80kg / m

• Beam under the transmission speed : 30 ~

300mm / s

• 10MeV / 20kW Accelerator

3. Irradiation linac

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yellow :Acceleration tube inlet Microwave forward

waveform

pink : Accelerated tube inlet Microwave reverse

waveform

cyan : Accelerated tube outlet Microwave forward

waveform

blue: Accelerated tube output Pulse beam

waveform

yellow : Klystron pulse high voltage

waveform,

blue : klystron pulse current waveform

pink : electron gun pulse high voltage

waveform

Accelerator working status

3. Irradiation linac

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Key indicators test

Scan direction dose distribution Transmission direction dose distribution

The most probable energy

The maximum electron beam

3. Irradiation linac

20Control room Cargo storage area

Loading and unloading cargo area

• Successful case: Pet food irradiation

http://www.gambolpet.com/

3. Irradiation linac

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The accelerator can provides a high performance electron beam

reference radiation field for calibration and identification of radiation

dosimeters.

It can also be used for anti-radiation reinforcement and performance

studies of semiconductor and microelectronic devices.

Electron beam energy: 6MeV,8MeV,10MeV and 12MeV.

Beam power: beam average power 1 ~ 6.5kW adjustable.

Repetition frequency: 50 ~ 350Hz.

Upright export scanning width: 600 ~ 800 mm (400mm from

titanium window).

• Multi - energy electron beam linear accelerator

3. Irradiation linac

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Preset energy

MeV

Beam intensity

mA

Beam power

kw

6 920 5.52

8 785 6.28

10 620 6.2

12 430 5.16

Test results

• Multi - energy electron beam linear accelerator

3. Irradiation linac

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4. Our plan

0

50

100

150

200

250

2007 2010 2017 2020

EB P

OW

ER

YEAR

The power plan of EB machine in CIAE

X-band electron NDT linac

Higher power Irradiation accelerator

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Thank you for your attention!