1.These detectors have an absorber which is readout by two or more sensors.
2.The limiting factors in making very large singlepixel arrays are the difficulties in readout and the complexity of wiring in the focal plane.
3.For STJs, RFSETs may provide multiplexing.
4.Any sensor multiplexing adds to the total number of pixels one can instrument. These two techniques compliment each other and both will be required to achieve the largest arrays.
5.Statistical studies of thousands of faint objects are preferred over studying a small amount of bright ones.
6.Increasing the absorber area will increase the collection area at the expense of some degradation of energy resolution, but may introduce position dependance in the pulse shapes.
7.One way to increase the count rate (and decrease the integration time needed to analyze a sample) is to place a focusing optic between the sample and the cryogenic spectrometer.
The various.
8.noise terms from the junctions and readouts that affect the achievable energy resolution are discussed elsewhere.
9.Their
research effort is focussed on trying to develop a 200 nm thick, 1.25 mm long Mo absorber as a strong candidate for a DROID for use in the proposed XEUS X-ray astronomy mission.
10.albeit over a limited region of their 200*100 um2 absorber.
11.and their simulations indicate they could achieve a resolution of 23.9 eV at 6 keV.
12.Position-sensitive microcalorimeters operate in a similar fashion to their STJ counterparts.
13.The absorber is a material with a long mean-free pathfor phonons. High-purity germanium, silicon and sapphire crystals are used.
14.It is important in these detectors to have efficient electron–hole pair recombination to minimize this problem.
15.The University of Leicester is working on a onedimensional thermal detector with an Iridium TES at each end of a gold-bismuth absorber.
16.The have recently obtained X-ray data and expect results soon.
17.Our goal is to increase the focal plane of the Constellation-X mission by producing a hybrid detector with a central singlepixel array, surrounded by PoSTs.
18.Alternatively, we could skip the x–y readout and have 20*20 two-dimensional imaging arrays each read out by 4 channels.
19.Of course trade-offs between count rate, energy resolution,and field of view will have to be made for each case.