We have developed a 16-element, 97GHz, lownoise Transition Edge Sensor (TES) module that can be packed easily into large-format polarimetric imaging arrays. The technology was developed originally for the lowfrequency instrument of the CLOVER experiment, which was aimed at searching for the signature of primordial gravitational waves in the polarisation state of the Cosmic Microwave Background Radiation. Each module contains 16 slotline and microstrip-coupled TES bolometers, allowing eight polarimetric pixels with external waveguide OMTs, along with time-domain multiplexed SQUID readout. Here we describe the design of the modules, and explain how they were realised in practice, detailing some of the technology developed along the way. Performance was measured by following two parallel paths: (i) detailed characterisation of individual detectors using an exceedingly well understood, fully modelled, analogue SQUID readout system, and (ii) simultaneous measurements of the entire module using CLOVER's multichannel readout electronics. We describe the results of measurements on one of the modules, with an emphasis on uniformity of performance, and we assess the effect of non-uniformity on the operation of a complete array. Although the technology was developed in the context of CLOVER, the work has consequences for many instruments including future space telescopes such as BPol.
Performance of a microstrip-coupled TES imaging module for CMB polarimetry / Audley, M. D.; Glowacka, D.; Goldie, D. J.; Tsaneva, V.; Withington, S.; Piccirillo, L.; Pisano, G.; Grimes, P.; Yassin, G.; Ade, P. A. R.; North, C.; Irwin, K. D.; Halpern, M.. - (2010), pp. 55-63. (Intervento presentato al convegno 21st International Symposium on Space Terahertz Technology 2010, ISSTT 2010 tenutosi a Oxford, gbr).
Performance of a microstrip-coupled TES imaging module for CMB polarimetry
Pisano G.;
2010
Abstract
We have developed a 16-element, 97GHz, lownoise Transition Edge Sensor (TES) module that can be packed easily into large-format polarimetric imaging arrays. The technology was developed originally for the lowfrequency instrument of the CLOVER experiment, which was aimed at searching for the signature of primordial gravitational waves in the polarisation state of the Cosmic Microwave Background Radiation. Each module contains 16 slotline and microstrip-coupled TES bolometers, allowing eight polarimetric pixels with external waveguide OMTs, along with time-domain multiplexed SQUID readout. Here we describe the design of the modules, and explain how they were realised in practice, detailing some of the technology developed along the way. Performance was measured by following two parallel paths: (i) detailed characterisation of individual detectors using an exceedingly well understood, fully modelled, analogue SQUID readout system, and (ii) simultaneous measurements of the entire module using CLOVER's multichannel readout electronics. We describe the results of measurements on one of the modules, with an emphasis on uniformity of performance, and we assess the effect of non-uniformity on the operation of a complete array. Although the technology was developed in the context of CLOVER, the work has consequences for many instruments including future space telescopes such as BPol.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
