Post by yhbyhb4433 on Oct 17, 2018 10:33:56 GMT -5
Hello, I have a question about the design of probe arm thermal anchor in my TTP6 system (from Desert Cryotronics). It's an old system but it seems the newer Lakeshore system is using the same design. The probe arm is a copper beam anchored to both radiation shield and the sample stage. However, this method seems to increase the heat load because it needs to cool the whole probe arm. It also increase the settling time for each temperature because the measurement won't be high quality if the probe arm is still expanding/contracting. An alternative way is to cool down only the probe, not the probe arm. In other words, I can take off the anchors to radiation shield, add a thermal insulator under the probe, and anchor the copper braids directly on the probe (where the screws sit). There may be some modifications needed, but I'm curious if the concept is correct. Essentially, if we don't cool the probe arm at all, but only cool the probe itself, which is isolated from the probe arm because it sits on a thermal insulator, does this reduce the heat load and get a better probe tip temperature?
Post by Lake Shore Jeff M on Oct 18, 2018 7:15:00 GMT -5
I have discussed your question with my applications engineer and due to the complexity of your question, answering it in the forum will be very difficult, therefore, they have asked me to obtain your email address so please send this request to [email protected] and I will have our applications engineer contact you directly. Please be sure to include your contact information including your full name, company, address and contact telephone number.