Recent Posts

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Cameca / Re: Setting dead times on Cameca SX50/SX100/SXFive
« Last post by John Donovan on May 04, 2021, 08:59:20 AM »
The deadtime correction expression is an infinite factorial of which only the first factorial term is generally utilized.  This is because deadtime is a statistical event and the single factorial term is generally good enough at relatively moderate count rates.  The expression #2 just utilizes a 2nd factorial term in this infinite series for better handling of extremely high count rates.  It is not intended to deal with other electronic non-linearities.
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Cameca / Re: Setting dead times on Cameca SX50/SX100/SXFive
« Last post by sem-geologist on May 04, 2021, 02:01:54 AM »
Thank You for the formula.
I put it into the simulation and find that it is not satisfactory, the problem is that it merges two separate processes into one. Counting piled-up peaks as single peak is not depending from the dead time, but from count rate alone. I am coming up with some improved formula. Unfortunately, I find it works rather only on SXFive (or SX100 with new WDS board), as unfortunately I found out that SX100 (old electronics) counting electronics have paralysable behavior (flats out at about 250kcps (raw, not-dead-time-corrected)). I am trying to understand the process to make the equation universal.
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JEOL / Re: System maintenance/fix-it tips and tricks
« Last post by Probe321 on April 30, 2021, 09:58:29 AM »
Hi everybody,

This is a question about JEOL software behaviour.

So on the USGS Denver 8530F microprobe I could freely move around both the PC-SEM software window and the PC-EPMA window anywhere I wanted to on any of the screens connected to that computer. On my current setup (an I think some setups at Oz Unis) the PC-SEM Software is freely movable. The PC-EPMA side, however, opens up on a monitor when starting the JEOL software, locks itself into place, and becomes completely immovable. The Title Bar with the Max, Min, and X buttons is completely missing. The only way to get this window to relocate is to close the JEOL software completely, turn off the monitor that the PC-EPMA software decides to open itself on, then restart the software. This has the effect of opening the PC-EPMA software on a different screen but it still is locked and immoveable on the new monitor.

Does anyone have any idea how to get the PC-EPMA title bar back and to allow the window to be moved?

Thanks!
David

Change the resolution on the monitor(s) using the video card software.  The NETL 8530F plus is using an Nvidia video card and to get the display to show the JEOL software correctly resolution has to be set through the Nvidia software. Microsoft Remote Desktop does not allow you to change resolutions. 

For the frozen epma software I suspect you are using Microsoft Remote Desktop.  Try logging off the computer and reconnecting and logging back in.  In my case the EPMA window is now movable.  If the software is up and running and you reconnect the EPMA window is locked to the left side of the screen. Using a VNC program such as VNC connect ($) lets you change monitor resolution and the EPMA window moves. At NETL I remote to a workstation and then use VNC connect viewer to connect to the Microprobe and Probe for EPMA. I have not found anything I cannot adjust when using the VNC connection.
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JEOL / Re: System maintenance/fix-it tips and tricks
« Last post by DavidAdams on April 28, 2021, 04:10:55 PM »
Our PC-EPMA version says 1.13.0.0, PC-SEM 3.0.1.20, not sure how that translates to 17 (overall version number?). The PC-EPMA window seems around 1280x1050 in size under Win7, so even if I can move it it only just fits when using the small setting for the taskbar at the bottom, not with the normal full size taskbar. We're still on Win7 but as far as I remember my colleague from UMelb was saying that their's became unmovable after a JEOL software upgrade, not upgrade to Win10.


The second number in your PC-EPMA version is the "Version" in JEOL speak. So in your case you're running "Version" 13.  I'm not sure why Heather's version 17 allows for the window to be moved and my version 17 is immovable.

Moving the task bar around it is a good test. I'll try that as soon as Sergiy is done in the lab this week.

Hi, I have that problem too and in my opinion, it is just related to the display resolution (and poor programming).

If I run the display resolution at 1920x1080 I have the problem that PC-EPMA is unmoveable (Monitor is 4K, but the lower resolution displays the PC-SEM/EPMA windows nice and large). If I choose a higher display resolution, I can move PC-EPMA just fine as both windows are displayed smaller.


That's really interesting behaviour. I have one 4k screen too and when the PC-EPMA window decides to move to that one after a software reset, changing the resolution doesn't do anything.  The PC-EPMA window just gets larger or smaller but is still locked in the upper left corner of the monitor
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For those who missed my presentation at the (virtual) Athens EPMA workshop 2021 earlier this month, here is a link to my Quantitative WDS X-ray Mapping talk:

https://epmalab.uoregon.edu/posters/Quantitative_Mapping_EPMA_Donovan_2021_v1.pptx

It was an excellent workshop, well organized and very well attended.
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DTSA II / Re: Pre-Release Versions of DTSA-II
« Last post by jrminter on April 26, 2021, 02:27:22 PM »
Thank you. These work as expected on MacOS and Win10.
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DTSA II / Re: Pre-Release Versions of DTSA-II
« Last post by NicholasRitchie on April 26, 2021, 04:50:20 AM »
The DTSA-II pre-release version has been updated with:
  • The bulk Monte Carlo has been enhanced with tabulated values for the radial extent of emission.
  • A bug (regression) parsing the Glass Database data has been resolved.

https://drive.google.com/file/d/17YAXRYkQ9vAQ509AwP5eZagdGfShX-dE/view?usp=sharing
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DTSA II / Re: Fractional emission distances from the probe in DTSA-II?
« Last post by pvonlant on April 26, 2021, 02:39:43 AM »
Great! Thanks for your quick reply! It is exactly what I was thinking about. From a visual point of view, it corresponds very well with the feeling I got from qualitative maps in which phase boundaries are supposedly vertical. When compared to the curves generated by Casino 2.5, I was (visually) thinking the 50.0% radial distances to be even a bit shorter (i.e. closer to the beam axis), but science has spoken! My background in maths is very limited, but I guess that it highly depends on what we consider DMax to be (99.999% or 99.99999999999% makes a sizable difference here I think). Thanks again for your help. If you get positive feedbacks from other users, I would definitively integrate the "Radial Distances" to the next official release of DTSA-II.
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For JEOL 8230/8530/iSP100/iHP200F EPMA users:

We recently added a new flag in the [hardware] section of the probewin.ini file that will cause the software to issue an "unfreeze" command to the JEOL software after both point and image acquisitions.  This prevents the user from having to constantly click the "Unfreeze" button in the JEOL software.

To obtain this new feature and turn it on, simply update Probe for EPMA using the Help menu, and then edit this flag in the probewin.ini file [hardware] section as shown here:

[hardware]
JEOLUnfreezeAfterFlag=1

The new flag will appear at the end of the section after the updated software has run.
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JEOL / Re: System maintenance/fix-it tips and tricks
« Last post by Karsten Goemann on April 23, 2021, 06:49:49 PM »
We have 1920x1080 on our monitor and the window is not fixed. I actually swap the PC-SEM and -EPMA window positions around as that works better for me with our overall screen layout, so having PC-EPMA locked would be quite annoying.

Our PC-EPMA version says 1.13.0.0, PC-SEM 3.0.1.20, not sure how that translates to 17 (overall version number?). The PC-EPMA window seems around 1280x1050 in size under Win7, so even if I can move it it only just fits when using the small setting for the taskbar at the bottom, not with the normal full size taskbar. We're still on Win7 but as far as I remember my colleague from UMelb was saying that their's became unmovable after a JEOL software upgrade, not upgrade to Win10.

If you have a Windows taskbar at the bottom of that screen, does the fixed position of the PC-EPMA window change if you move the taskbar say to the left screen edge or turn it off for that screen?
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