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Calorimetric low temperature detectors for low-energetic heavy ions and their application in accelerator mass spectrometry
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10.1063/1.3213622
/content/aip/journal/rsi/80/10/10.1063/1.3213622
http://aip.metastore.ingenta.com/content/aip/journal/rsi/80/10/10.1063/1.3213622

Figures

Image of FIG. 1.
FIG. 1.

Schematic principle of particle detection with a calorimetric low temperature detector (discussion see text).

Image of FIG. 2.
FIG. 2.

The setup of a calorimetric detector with a superconducting aluminum TES is schematically displayed (discussion see text).

Image of FIG. 3.
FIG. 3.

A typical characteristic of a TES thermistor: is the transition temperature and represents the width of the transition.

Image of FIG. 4.
FIG. 4.

Schematic view of the experimental setup: the pumped bath cryostat was connected directly to the beamline of the VERA facility. For the systematic investigations the 0°-beamline was used. The AMS measurements were performed at the 20°-beamline (for details see text).

Image of FIG. 5.
FIG. 5.

(a) Preamplifier signal and (b) energy spectrum for ions at obtained with the aluminum TES calorimeter. The relative energy resolution achieved was (Ref. 13 and 14).

Image of FIG. 6.
FIG. 6.

Energy spectra for ions at taken under identical experimental conditions with (a) the aluminum TES calorimeter and (b) the silicon surface barrier detector. The relative energy resolution achieved was for the calorimetric and for the silicon detector, respectively.

Image of FIG. 7.
FIG. 7.

Summary of a systematic study of the detector performance for various ions and energies: Relative energy resolution obtained for various ions in an energy range of . The solid line represents a fit to the data (for discussion see text and Refs. 13 and 14).

Image of FIG. 8.
FIG. 8.

Summary of a systematic study of the detector performance for various ions and energies: Linearity of energy response obtained for various ions in an energy range of for (a) the calorimetric detector and (b) for a conventional silicon surface detector. The solid lines represent fits to the data. The inlay shows the point at in an enlarged scale (Refs. 13 and 14).

Image of FIG. 9.
FIG. 9.

Simulation of background situation under the assumption of Gaussian line shapes situation for the AMS experiment. The ratio of to is assumed to be 10:1, the energy resolution to be (Refs. 13 and 17).

Image of FIG. 10.
FIG. 10.

Energy spectrum for the AMS measurement of the isotope ratio in the samples (a) Vienna-KkU and (b) Joachimsthal 2.

Image of FIG. 11.
FIG. 11.

Energy spectrum for the AMS measurement of the isotope ratio in the sample prepared from Bad Gastein spring water.

Image of FIG. 12.
FIG. 12.

Examples for several different transition curves for different detectors are shown. All detectors were produced on one single sapphire wafer in one production run.

Image of FIG. 13.
FIG. 13.

Design of a prototype array consisting of detector pixels. Each column of two pixels is mounted individually. The inlay shows one single pixel with the new design with the gold heater (Refs. 20–22).

Image of FIG. 14.
FIG. 14.

Spectra obtained with direct-beam irradiation with ions of energy MeV the detectors (a) D001-1 and (b) D001-2. The relative energy resolutions obtained were for D001-1 and for D001-2, respectively.

Tables

Generic image for table
Table I.

Results of the measurements of the isotope ratio to establish a material standard (Vienna-KkU and Joachimsthal 2) and to improve the sensitivity (Bad Gastein). The systematic error results from the determination of the transmission.

Generic image for table
Table II.

Performance of the prototype array under irradiation with heavy ions. The notation 1 and 2 in the detector names refer to two pixels in the same column, i.e., on the same ceramic carrier. In average, a relative energy resolution of was obtained (Refs. 21 and 22).

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/content/aip/journal/rsi/80/10/10.1063/1.3213622
2009-10-26
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Calorimetric low temperature detectors for low-energetic heavy ions and their application in accelerator mass spectrometry
http://aip.metastore.ingenta.com/content/aip/journal/rsi/80/10/10.1063/1.3213622
10.1063/1.3213622
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