European XFEL Seminar

KALYPSO: linear array detector with continuous MHz read-out rates

by Dr. Christopher Gerth (DESY)

Wednesday, November 14, 2018 from to (Europe/Berlin)
at European XFEL ( XHQ / E1.173 )
Campus Schenefeld
 Description KALYPSO: linear array detector with continuous MHz read-out rates The linear array detector KALYPSO [1] has been developed for the measurement of 1-dimensional spectral or spatial distributions with continuous read-out at MHz frame rates for electron bunch or photon pulse diagnostics. The detector system is a collaborative effort between the Karlsruhe Institute of Technology (KIT), Paul Scherrer Institute (PSI), University of Lodz, and DESY. The current front-end version comprises a Si strip sensor with 256 pixels of 50 µm pitch and two GOTTHARD [2] ASICs from PSI. An FPGA-based carrier board has been developed which connects the KALYPSO detector to the back-end electronics in MTCA.4 standard. For photon pulse synchronous read-out, the clock and trigger signals from the timing system, i.e. X2Timer, are used at the European XFEL and FLASH. The detector system has been integrated into the DOOCS control and DAQ system for control and data storage, respectively. KALYPSO has been installed at the variable line spacing (VLS) grating spectrometer [3] at FLASH1 to record the single-shot resolved spectra of the FEL pulses at 1 MHz read-out rate. In addition, results from electro-optical diagnostics obtained at the European XFEL and ANKA will be presented. A short outlook on the next version of KALYPSO will be given. [1] L. Rota et al., KALYPSO: Linear array detector for high-repetition rate and real-time beam diagnostics, Nucl. Instrum. Methods Phys. Res. A (2018) https://doi.org/10.1016/j.nima.2018.10.093 [2] A. Mozzanica et al., The Gotthard charge integrating readout detector: design and characterization, JINST 7 (2012) C01019. [3] G. Brenner et al., First results from the online variable line spacing grating spectrometer at FLASH, Nucl. Instrum. Methods Phys. Res. A (2011) 635, 99–103.  Organised by Dr. Naresh Gandhi Kujala