Thank you for the sensors information, in the web does not appear, perhaps such sensors are not standard and I have to send them an email.
I have not information at the sensor datasheet about saturating current, it may be due they are usually used at lot less illumination
I also have seen BaF2 scintillator, it performance may be good and it is not hygroscopic and can be irradiated up to 10^5 Gray
