74-6 Environmental
several design revisions over the past two decades, beginning as a cylindrical detector to simplify charge
co
llection
ch
aracteristics
an
d
re
cently
ch
anging
to a tw
o-detector
sp
herical
sh
ell
sy
stem
. Pr
opane
is
us
ed
as a l
l
ga
s
at ve
ry
lo
w
pr
essure
to em
ulate
th
e
ra
diation
e
ects
in
side
of a mi
cron-scale
vo
lume
to
ap
proximate
a si
ngle
t
issue
c
ell
.
In th
e
ca
se
of th
e
TE
PC,
li
neal
en
ergy
(y) is ca
lculated
fo
r
ea
ch
ev
ent
by di
viding
de
posited
en
ergy
ov
er
th
e
me
an
cho
rd
le
ngth
. De
tector
re
sponse
ca
librations
ar
e
us
ed
to co
rrelate
th
e
me
asured
li
neal
en
ergy
wi
th
pa
rticle
LE
T
an
d,
th
rough
pr
evious
re
search
[5
7],
de
termine
th
e
ra
diation
qu
ality
(Q) or RB
E
fo
r
n
al
calculation of dose equivalent (H). e occurrence of interactions ...