We try to quickly (even if not professionally) repair it ouselves because we already ordered a new one but need some more time until its integrated properly
We have tested for leaks and all connections on the outside seemed to be functional. When we put the helium tube through the liquid nitrogen filler neck however, the pressure increased significantly
We don't know the size of the leak, but I suspect it to be more of a hairline crack. Since the dewar is permanently connected to the camera's casing, we can't take it out and our only access to the inside is via the bottleneck where we usually refill the nitrogen. Just refilling nitrogen does...
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I need to fix a leak on the inside of a liquid nitrogen dewar which acts as the coolant tank for a spectroscopy CCD camera. Due to the design of the camera, I unfortunately can only access the inside of the dewar via its bottleneck. Since the dewar is permanently connected to the camera body...
