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4hv.org :: Forums :: High Voltage
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Fabi
Fri Aug 19 2011, 08:44AM Print
Fabi Registered Member #3510 Joined: Mon Dec 13 2010, 08:31AM
Location: western germany
Posts: 19
Hi,

I got my x-ray tube (D-064r). I just made some pictures. I will upload them in the next time.
I Drive the Tube at the moment with two antiparallel ignition coils. The problem is: I get AC and I'd like to have DC to drive the tube.


The next thing is to capture the picture. I don't want to photograph them. I directly want to have them in the sensor. So It's losless.
I tested it with a normal CIS-Scanner. But the image is too noisy to use it... So I need an x-ray image sensor or anything similar...
I would prefer a line sensor line which is about 10-20cm long...
and I want to trigger the tube in synchron to the line sensor by a PC or µC.

Why a linesensor?

I want to place the object on a rotating plate, which is driven by a 96 step stepper-motor with a 1:10 gear.

Here is the process:

I place the "to x-ray-object" on the plate and "press "scan"" or something like that.

The computer/µC triggers the tube and the sensor synchronously.
After that the motor goes one step and the same: (The computer/µC triggers the tube and the sensor at the same time.)
this 960 times until the object rotated 360°.
So now I have about 960 lines/pictures every from a different angle.

Now comes the software-part. I just program the analysis part, when the other things (trigger, HV, etc work correctly)

If you have any ideas to one of those points, I'm grateful for any suggestions...


Hope you could understand me...

greets from Germany

Fabian
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Proud Mary
Fri Aug 19 2011, 09:41AM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
What sort of radiological protection equipment and instruments have you got, Fabian?
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Fabi
Fri Aug 19 2011, 09:55AM
Fabi Registered Member #3510 Joined: Mon Dec 13 2010, 08:31AM
Location: western germany
Posts: 19
Hi,

I have a digital dosimeter (Grif-1) and an analog geiger counter (SV-500).

The setup is in the basement of my house.

The walls are solid steel-beton. I made measures all around and everywhere are normal values. (exept my basement, when the x-raytube is on)

I have some lead-panels around the setup, which are grounded they have two tasks: shield the X-rays and shield the HV-field.

The average value is 17 CPM. When the device is on, the value does'nt change even not directly behind the door...

This is very accetable.

I've calibrated the devices last month.


Fabian

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