The SEM is working at 1kV, but does not work for HT > 1kV. FEI engineers are informed and service call placed. Waiting for FEI service tomorrow.
Magellan SEM down in the afternoon of 2/21/2013 and up on 2/25/2013
//Month: February 2013
//CM-20 TEM is down on 2/6/2013 and up on 3/8/2013
//The TEM maintenance started from the condenser aperture on Feb 6. FEI engineer opened the whole TEM column and replaced the old aligning tube with a new one. Meanwhile, he found that the beam deflector had a crack, an aging problem. Besides other parts, FEI shipped a new deflector to UCI last week, but it was for Tecnai TEM instead of for our CM-20 TEM. Because FEI stopped producing CM-20 TEM for many years, no new deflector was found for our TEM. Last week, a used one was finally shipped to our lab. After installing the deflector, pumping the TEM down and conditioning the HT, the electron beam was seen on this Monday. However, the service engineer could not get the TEM up to a good working condition on Monday and Tuesday. Today (Wed), FEI service manager visited us and found that the used deflector did not work properly. He is contacting the related people in FEI to find a solution for us. He is treating this as an emergency, but he does not know when this issue can be solved. He will keep me posted. When I have news about it, I will put it in comments. Sorry for the inconvenience caused by the downtime of this TEM.