Infrastructure Development of Single Cell Testing Capability at A0 Facility

Instrumentation for localized superconducting cavity diagnostics

“…Cornell University, one of the early adopters of this technology, has used a single-cell T-mapping system since the mid-1980s [11][12][13] and has recently implemented a large multi-cell T-mapping system [14,15]. Today many research facilities are equipped with sophisticated T-mapping systems and the number of users is expected to continue growing: Los Alamos National Lab has a 9-cell T-mapping system [16], Thomas Jefferson National Accelerator Facility has single-cell and two-cell T-mapping systems [17,18], Fermi National Accelerator Laboratory has a singlecell T-mapping system [19], and KEK (Kō Enerugī Kasokuki Kenkyū Kikō, the high energy accelerator research organization in Japan) maintains a 9-cell flexible T-mapping system [20,21] and a rotating T-mapping system [22,23].…”

“…Typical temperature sensors are resistive temperature detectors built from either a carbon resistor (56 or 100 Ω, 1/8 W, Allen-Bradley) [11][12][13][14][15][16][17][18][19] or a ruthenium oxide (RuO 2 ) resistor [20,21]. Figure 1(a) shows a schematic of a carbon resistor based sensor.…”