GOTTHARD: a Gain Optimizing microsTrip sysTem witH Analog ReaDout
GOTTHARD is a 1D detector system based on the principle of charge integration with automatic gain switching capability. The goal of the project is to provide a 1D detector that can sustain the instantaneous many-photon deposition typical of the forthcoming XFEL machines retaining at the same time the same data quality of a single photon counting detector. Due to some unique features like the high frame rate (40kHz continuous and up to 1MHz in bursts) the low noise and the spectral information availability the detector opens new possibilities in syncrotron source applications.
The module architecture
The detector module is composed from 10 readout ASIC (Application Specific Integrated Circuit) wire bonded to a single silicon sensor with a 4mm x 8mm sensitive area for a total of 1280 channels at 50 um pitch. A complete readout chain, from the high speed ADCs to the Gbit link for the data download, is also integrated on the board. The control of the detector is performed via an ethernet linkt to the onboard Blackfin-based Linux system. High voltage for the sensor and all powers are locally generated from a common 5V input supply.
Results and Specifications
- XES/XAS with energy dispersive optics
- powder diffraction
- beam dignostics: shot to shot spectral information with energy dispersive optics, beam position and intensity monitor
- pump-probe experiments with up to 1MHz repetition rate
- diffraction experiments at very high photon rates
- high resolution applications (a smaller pitch sensor is used)
|GOTTHARD 1.0, 50 um|
|GOTTHARD 1.0, 25 um|
*Please refer the latest installation section for instructions on the latest software package.
Palutke S, Gerken NC, Mertens K, Klumpp S, Mozzanica A, Schmitt B, et al.
Spectrometer for shot-to-shot photon energy characterization in the multi-bunch mode of the free electron laser at Hamburg
Review of Scientific Instruments. 2015; 86(11): 113107 (9 pp.). https://doi.org/10.1063/1.4936293
Pradervand C, Bednarzik M, Schmitt B, Mozzanica A, Schulze-Briese C
A CVD diamond based X-ray beam profile sensor combined with the Gotthard charge integrating readout
Presented at: 11th International conference on synchrotron radiation instrumentation (SRI2012); July 9-13, 2012; Lyon, France.
Bergamaschi A, Dinapoli R, Henrich B, Johnson I, Mozzanica A, Shi X, et al.
Beyond single photon counting X-ray detectors
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2011; 628(1): 238. https://doi.org/10.1016/j.nima.2010.06.326
Mozzanica A, Bergamaschi A, Dinapoli R, Graafsma H, Henrich B, Kraft P, et al.
A single photon resolution integrating chip for microstrip detectors
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2011; 633(SUPPL. 1): S29-S32. https://doi.org/10.1016/j.nima.2010.06.112
|Dr. Aldo Mozzanica||
|Dr. Jiaguo Zhang||