SPA multiple images

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Details

Name	SPA multiple images
Permalink	https://serialemscripts.nexperion.net/script/25
Category	Single Particle
Language	SerialEM Scripting
Description	Shoot multiple images around the hole edge. The macro does not return Record images due to the EarlyReturnNextShot option being set to 0!
Author	Wim Hagen

Version History

Version 1.0 (June 01, 2017; 815 download(s); SerialEM version ≥ < 3.5)

Version 1.0

Download

Upload date	June 01, 2017
Download count	815
SerialEM version ≥	< 3.5

MacroName SPAK2fast
# SPA macro for Krios/Quantum/K2
# Buffer P is expected to have refference hole image from Low Dose View
# Wim Hagen, EMBL Heidelberg 20170309
# Credits to Chen Xu & Henning Stahlberg group

####### SETTINGS #######

maxholeshift        = 100   # max beam/image shift after hole centering in nanometers

NumberShots       = 6	        # Number of shots in one hole
IS_RAD 	             = 0.75     # Radius of off-center ImageShift displacement

driftcrit                 = 2	# A/sec
driftinterval        = 5        # seconds
drifttimes 	        = 10	# max no of drift measurements

TD_low              = -0.75      # low defocus microns
TD_high             = -3	# high defocus microns
delta                    = 0.25   # defocus step microns

####### END SETTINGS #######

SuppressReports

ReportClock 
ticks = $RepVal1

####### Align to hole #######

MoveToNavItem

Echo ===> Running align to hole ...

GoToLowDoseArea V

V
AlignTo P
ReportAlignShift
Echo hole shift 1 $RepVal5 $RepVal6
holeshift = sqrt $RepVal5 * $RepVal5 + $RepVal6 * $RepVal6

if $holeshift > $maxholeshift
   ResetImageShift
   V
   AlignTo P
   ReportAlignShift
   Echo hole shift 2 $RepVal5 $RepVal6
endif

MoveStage -0.025 -0.025

ReportClock
holecenteringticks = ($repVal1 - $ticks)

####### Focus #######

GoToLowDoseArea F

bigstep = $TD_low - $TD_high
ReportTargetDefocus TD

if $TD > $TD_low
   diff = $TD - $TD_low
   IncTargetDefocus -$diff
 elseif $TD > $TD_high 
   IncTargetDefocus -$delta
 else
   IncTargetDefocus $bigstep
endif

ReportTargetDefocus DefocusTarget
echo Target defocus = $DefocusTarget

CallFunction WaitForRefilling
Echo ===> autofocus ...
G

ReportClock
focusticks = ($repVal1 - $ticks)

####### Drift #######

Echo ===> Running Drift ...
GoToLowDoseArea T
Delay 2 sec
CallFunction WaitForRefilling

ReportClock
time1 = $RepVal1

T
Delay $driftinterval
Loop $drifttimes index
   ReportClock time2
   T
   AlignTo B
   ReportAlignShift
   dx = $reportedValue3 # in nm
   dy = $reportedValue4 # in nm
   dist = sqrt $dx * $dx + $dy * $dy
   elapsedtime = $time2 - $time1
   time1 = $time2 
   rate = 10 * ( $dist / $elapsedtime  )
   echo Rate = $rate A/sec
   echo ----------------
   
   If $rate < $driftcrit
      echo Drift is $Rate A/s after shot $index      
      break
    Elseif  $index < $drifttimes
      Delay $driftinterval
    Else
      echo Drift never got below $driftcrit : Skipping ...
      break   
   Endif
EndLoop

ReportDefocus actualdefocus
echo actual defocus = $actualdefocus

ReportClock
driftticks = ($repVal1 - $ticks)

####### Acquire images #######

GoToLowDoseArea R
delay 3 sec
ReportImageShift
isux = $RepVal1
isuy = $RepVal2

Loop $NumberShots icount
   IS_ANGLE = ( $icount - 1 ) * 360 / $NumberShots
   IS_X = $IS_RAD * sin ( $IS_ANGLE )
   IS_Y = $IS_RAD * cos ( $IS_ANGLE )
   ImageShiftByMicrons $IS_X $IS_Y
   CallFunction WaitForRefilling
   EarlyReturnNextShot 0
   R
   SetImageShift $isux $isuy
endloop

ResetImageShift

# timing
ReportClock
recordticks = ($repVal1 - $ticks)
holetime = $holecenteringticks
focustime = $focusticks - $holecenteringticks
drifttime = $driftticks - $focusticks
recordtime = $recordticks - $driftticks
echo timing $holetime $focustime $drifttime $recordtime $recordticks seconds

Echo ===> Done ...
Echo ====================================================

Function WaitForRefilling
   
   Loop 10
      AreDewarsFilling
      If $repVal1 == 1
         echo LN2 is Refilling
       Else
         Break   
      Endif   
      Delay 1 min
   EndLoop
   
endfunction

Related Scripts

The following scripts provide a similar or related functionality, but are not required to run this script:

Documentation

Setup Low Dose.
Buffer P should contain a Low Dose View hole image.
Adjust settings.
Add acquisition points in Navigator.
Acquire At Points.

License

This code can be shared and adapted under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License (https://creativecommons.org/licenses/by-nc-sa/4.0/)