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Re
s
pon
s
e of a diamond detector
s
andwich to 14 sp>MeV neutron
s
详细信息
查看全文
作者:
M. O
s
ipenko<
s
up>a
s
up><
s
up>
;
s
up><
s
up>o
s
ipenko@ge.infn.it" cla
ss
="auth_mail" title="E-mail the corre
s
ponding author
s
up>
;
M. Ripani<
s
up>a
s
up>
;
G. Ricco<
s
up>a
s
up>
;
B. Caiffi<
s
up>a
s
up>
;
F. Pompili<
s
up>b
s
up>
;
M. Pillon<
s
up>b
s
up>
;
G. Verona-Rinati<
s
up>c
s
up>
;
R. Cardarelli<
s
up>d
s
up>
关键词:
Fu
s
ion diagno
s
tic
s
;
Fa
s
t neutron
;
Diamond detector
刊名:Nuclear In
s
trument
s
and Method
s
in Phy
s
ic
s
Re
s
earch Section A: Accelerator
s
, Spectrometer
s
, Detector
s
and A
ss
ociated Equipment
出版年:2016
出版时间:1 May 2016
年:2016
卷:817
期:Complete
页码:19-25
全文大小:631 K
文摘
In thi
s
paper we pre
s
ent the mea
s
urement of the re
s
pon
s
e of 50 μm thin diamond detector
s
to 14 MeV neutron
s
. Such neutron
s
are produced in fu
s
ion reactor
s
and are of particular intere
s
t for ITER neutron diagno
s
tic
s
. Among
s
emiconductor detector
s
diamond ha
s
propertie
s
mo
s
t appropriate for har
s
h radiation and temperature condition
s
of a fu
s
ion reactor. However, 300&nda
s
h;500 μm thick diamond detector
s
s
uffer
s
ignificant radiation damage already at neutron fluence
s
of the order of 10<
s
up>14
s
up> n/cm<
s
up>2
s
up>. It i
s
expected that a 50 μm thick diamond will with
s
tand a fluence of <
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10
16
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n
/
sup>
cm
2
sup>
s
pan>
s
pan>
s
pan>. We te
s
ted two 50 μm thick
s
ingle cry
s
tal CVD diamond
s
,
s
tacked to form a “
s
andwich” detector for coincidence mea
s
urement
s
. The coincidence between two diamond
s
allow
s
to
s
uppre
ss
background and increa
s
e detection efficiency. The detector mea
s
ured the conver
s
ion of 14 MeV neutron
s
, impinging on one diamond, into
α
particle
s
which were detected in the
s
econd diamond in coincidence with nuclear recoil. For <
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rc="/
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script>
style="vertical-align:bottom" width="74" alt="View the MathML
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ource" title="View the MathML
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rc="http://origin-ar
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-cdn.com/content/image/1-
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script>
<
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pan cla
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multi
s
cript
s
>
C
script
s
>
script
s
>
12
multi
s
cript
s
>
(
n
,
α
)
multi
s
cript
s
>
Be
script
s
>
script
s
>
9
multi
s
cript
s
>
s
pan>
s
pan>
s
pan> reaction the total energy depo
s
ited in the detector give
s
acce
ss
to the initial neutron energy value. The mea
s
ured 14 MeV neutron detection
s
en
s
itivity through thi
s
reaction by a detector of an effective area 3&time
s
;3 mm<
s
up>2
s
up> wa
s
<
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pan id="mml
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i0010" cla
ss
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rc"><
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pan cla
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mu
latext
s
tixSupport mathImg" data-mathURL="/
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cience?_ob=MathURL&_method=retrieve&_eid=1-
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2.0-S0168900216001583&_mathId=
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i0010.gif&_u
s
er=111111111&_pii=S0168900216001583&_rdoc=1&_i
ss
n=01689002&md5=ac6fb889da7d1f4315f4f4178f69ab4d" title="Click to view the MathML
s
ource">5&time
s
;10<
s
up>&minu
s
;7
s
up>
s
pan><
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pan cla
ss
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5
&time
s
;
sup>
10
&minu
s
;
7
sup>
s
pan>
s
pan>
s
pan> count
s
cm<
s
up>2
s
up>/n. Thi
s
value i
s
in good agreement with Geant4
s
i
mu
lation
s
. The energy re
s
olution of the detector wa
s
found to be 870 keV FWHM, but according to Geant4
s
i
mu
lation
s
only about 160 keV FWHM were intrin
s
ic.
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