Gatan K2 Summit - Dose-Rate Monitor; Shutter Delay Setup; Figure 1-33. Current Dose Rate on Camera; Figure 1-34. Current Dose Rate and Total Dose Accumulated on the Specimen Per Image

31
Shutt
e
Contr
a
above
is. De
a
Dos
e
The d
o
fi
g
ur
e
After
a
magni
fi
g
ur
e
Dose
c
“kno
w
e
r Delay
S
A shu
t
when
t
dose
fr
In the
Sum
m
beam.
fi
g
ur
e
K2 Summit
a
st suffers ab
o
30 in Count
e
a
ling with se
t
e
-Rate Mo
n
o
se rate moni
t
e
1-33. Curr
e
a
pixel size c
a
fication is k
n
e
1-34. Curr
e
c
alibrations a
r
w
s” the micro
s
S
etup
t
ter delay ca
n
t
he beam has
fr
actionation
m
K2 Direct D
m
it camera to
w
This setting
a
e
1-35. Pre-
D
and K2 Base
o
ve 20 count
s
e
d mode, so i
f
t
ting the per
p
n
itor
t
or displays
e
e
nt dose rat
e
a
libration ha
s
own, the tota
e
nt dose rat
e
r
e on a pe
r
-k
V
s
cope kV, th
e
n
be specified
reached a de
m
ode to chec
k
etection > K
w
ait before c
o
a
pplies to all
D
ose Dela
y
s
Direct
D
etect
i
s
/sensor pixe
l
f
you’re near
p
ixel dose rat
e
e
-
/pix/s when
e
on camera
s
been done,
o
l dose is disp
e
and total d
o
V
basis. That
e
calibration i
to only start
i
sired level or
k
the beam le
2
Setup win
d
o
llecting dat
a
acquisition
m
s
ettin
g
i
on Camera
U
l/
sec. Due to
e
30 you have
n
e
is a commo
n
no pixel size
o
r when TE
M
layed in ter
m
o
se accumu
l
is, if the ca
m
s correct for
t
image acqui
s
r
the sample
h
e
vel and reco
m
d
ow you can
s
a
and after th
e
m
odes.
U
ser's Guid
e
e
vent crowdi
n
n
o idea how
h
n
point of co
n
calibration i
s
M
communica
t
m
s of electron
s
lated on the
m
era is appro
p
t
hat kV.
s
ition after a
d
h
as settled. S
u
m
mend a del
a
s
pecify a pre
-
e
specimen h
a
n
g, counts sa
t
h
igh the bea
m
n
fusion for n
e
s
in place.
t
ion is active
s
/specimen a
r
specimen p
e
p
riately linke
d
d
elay, for exa
u
mmit syste
m
a
y based on i
t
-
dose delay f
o
a
s been expo
s
t
urate just
m
really
e
w users.
so that
r
ea (Å2).
er ima
ge
d
and
mple,
m
s can use
t
.
o
r the K2
s
ed to the