Some of those Digital sensor are only rated up to 35kV x ray radiation, is there any reason. What would be the problems for such a sensor will there be degradation of the sensor matrix, the electronics of it can be shielded quite easily. but cant imagine why they would break if you use them with 90kV x rays. Do you know anything about that. Something like a C9732DK. Thanks
That's a great question! These sensors rely on a fluorescent screen to convert x-ray photons to light. Light is then converted by the photodiodes to an electrical current that is amplified (and later converted to a digital number by an ADC). What determines the "max kV" the sensor can take is this fluorescent screen (among other factors). The C9732DK is optimized to 17keV, meaning that above that the detector starts to saturate. Although the photodiodes can take the 90kV, at that voltage you may not be able to see anything, as the screen will be completely "white". In other words, the sensor will be saturated. This sensor is designed to image low density samples, like plants and seeds. I think we have one of these sensors in the shop, would you like to see one taken apart?
Oh ok, i would have thought that maybe the fluorescent will degrade with the higher energies. And that maybe the CMOS and Diodes may take damage from that. But would not reducing the intensity of the beam help to prevent saturation. Cool you have such a sensor they are really hard to get and expensive ;), would be interesting if possible. Thank you for your response, i really enjoy what you do, not many companies do that!
@@heinrichhein2605 Absolutely! We also have a sensor that takes higher radiation, I'll see if we can open that one as well to show you a side-by-side comparison. Keep watching, and let me know what else would you like to see. And keep hacking (safely, of course)!
Amazing, yes that would be cool maybe we can see a difference. For example the shielding for the electronics etc. Maybe you can show the effect on the image of using a "wrong" kVe wave length with adjusting the intensity. Yes safety is important with that stuff!
Some of those Digital sensor are only rated up to 35kV x ray radiation, is there any reason. What would be the problems for such a sensor will there be degradation of the sensor matrix, the electronics of it can be shielded quite easily. but cant imagine why they would break if you use them with 90kV x rays. Do you know anything about that. Something like a C9732DK. Thanks
That's a great question! These sensors rely on a fluorescent screen to convert x-ray photons to light. Light is then converted by the photodiodes to an electrical current that is amplified (and later converted to a digital number by an ADC). What determines the "max kV" the sensor can take is this fluorescent screen (among other factors). The C9732DK is optimized to 17keV, meaning that above that the detector starts to saturate. Although the photodiodes can take the 90kV, at that voltage you may not be able to see anything, as the screen will be completely "white". In other words, the sensor will be saturated. This sensor is designed to image low density samples, like plants and seeds. I think we have one of these sensors in the shop, would you like to see one taken apart?
Oh ok, i would have thought that maybe the fluorescent will degrade with the higher energies. And that maybe the CMOS and Diodes may take damage from that. But would not reducing the intensity of the beam help to prevent saturation. Cool you have such a sensor they are really hard to get and expensive ;), would be interesting if possible. Thank you for your response, i really enjoy what you do, not many companies do that!
@@heinrichhein2605 Absolutely! We also have a sensor that takes higher radiation, I'll see if we can open that one as well to show you a side-by-side comparison. Keep watching, and let me know what else would you like to see. And keep hacking (safely, of course)!
Amazing, yes that would be cool maybe we can see a difference. For example the shielding for the electronics etc. Maybe you can show the effect on the image of using a "wrong" kVe wave length with adjusting the intensity. Yes safety is important with that stuff!