Long-life cryogenic thermometry in particle accelerators and other demanding applications

A review of some research on the long-term stability of platinum and carbon thermometers under the working conditions of superconducting magnets for accelerators, as a function of magnetic fields, irradiation, cyclical cooling and heating, and vibration, is conducted. Results with TVO carbon-ceramic thermometers are presented for an 18-year period. The technology for training and selecting stable thermometers that are capable of ensuring precise measurements of temperature in the 1.6-350 K range during 10-15 years in the harsh working conditions of accelerator and other installations is offered. Some recommendations for reducing the influence of the thermometer production process, thermometer mounting, and places of attachment on the accuracy of cryogenic thermometers are given.