Development and application of electron linear accelerator of CIAE
YU Guo-long
China Institute of Atomic Energy
IAEA International Conference on Applications of Radiation Science and Technology
(ICARST)Vienna, Austria, 24–28 April 2017
1
1. Introduction
2. Non-destructive Testing (NDT) Electron linac
3. Irradiation linac
4. Our plan
Content
2
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
3
reactor –based BNCT
5
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
6
1. Introduction
7
• 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
8
Aviation Spaceflight Fire work weapons
Nuclear power Petrochemical industry
High speed railway Motor-engine
Air separation
NDT linac
2. NDT Electron linac
9
NDT linac system Modulator
Cooling Unit
Cables
X-ray Head and
Multi--dimensional
Motion System
Water Tubes
Control system
2. NDT Electron linac
10
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
11
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
12
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:
13
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
14
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
15
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
16
• 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
17
• 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
18
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
19
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
21
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
22
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
23
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
Top Related