PCaPAC2014 - List of Authors (Judin, V.)

Paper	Title	Page
WPO013	Status of the FLUTE Control System	63
WPI03	use link to see paper's listing under its alternate paper code
	S. Marsching, N. Hiller, V. Judin, A.-S. Müller, M.J. Nasse, R. Ruprecht, M. Schuh KIT, Karlsruhe, Germany
	The accelerator test facility FLUTE (Ferninfrarot, Linac- Und Test-Experiment) is being under construction nearby ANKA at the Karlsruhe Institute of Technology (KIT). FLUTE is a linac-based accelerator facility for generating coherent THz radiation. One of the goals of the FLUTE project is the development and fundamental examination of new concepts and technologies for the generation of intensive and ultra-broad-band THz pulses fed by femtosecond electron-bunches. In order to study the various mechanisms influencing the final THz pulses, data-acquisition and storage systems are required that allow for the correlation of beam parameters on a per-pulse basis. In parallel to the construction of the accelerator and the THz beam-line, a modern, EPICS-based control system is being developed. This control system combines well-established techniques (like S7 PLCs, Ethernet, and EPICS) with rather new components (like MicroTCA, Control System Studio, and NoSQL databases) in order to provide a robust, stable system, that meets the performance requirements. We present the design concept behind the FLUTE control system and report on the status of the commissioning process.
	Slides WPO013 [1.313 MB]

FPO002	Picosecond Sampling Electronics for Terahertz Synchrotron Radiation	167
FPI02	use link to see paper's listing under its alternate paper code
	C.M. Caselle, B.M. Balzer, M. Brosi, S.A. Chilingaryan, T. Dritschler, V. Judin, A. Kopmann, A.-S. Müller, L. Petzold, J. Raasch, L. Rota, M. Siegel, N.J. Smale, J.L. Steinmann, M. Vogelgesang, M. Weber, S. Wuensch KIT, Karlsruhe, Germany
	To study the synchrotron terahertz emission superconducting (YBCO) film detectors are used with the intrinsic response time in the order of a few picoseconds. For fast, continuous sampling of the individual THz ultra-short pulses a novel digitizer system has been developed. The system consists of detector, wideband low-noise amplifier, fast pulse digitizer board, back-end readout board. High-end graphic processing units (GPUs) perform real-time data analysis. Four samples with 12 bit are recorded in parallel for each fast pulse with programmable sampling times in the range of 3 to 100 ps. A new bus master DMA engine connected to PCI express endpoint has been developed to ensure a continuous high data throughput of up to 4 GByte/s. This heterogeneous real-time system architecture based on FPGA and GPU has successful been used for on-line pulse reconstruction and evaluations and calculates the peak amplitude of each pulse and the time between consecutive bunches with a picosecond time resolution at ANKA. A Fast Fourier Transform (FFT) is performed on-line for the frequency analysis of the CSR undulations.
	Slides FPO002 [1.153 MB]

Paper

Title

Page

WPO013

Status of the FLUTE Control System

63

WPI03

use link to see paper's listing under its alternate paper code

S. Marsching, N. Hiller, V. Judin, A.-S. Müller, M.J. Nasse, R. Ruprecht, M. Schuh
KIT, Karlsruhe, Germany

The accelerator test facility FLUTE (Ferninfrarot, Linac- Und Test-Experiment) is being under construction nearby ANKA at the Karlsruhe Institute of Technology (KIT). FLUTE is a linac-based accelerator facility for generating coherent THz radiation. One of the goals of the FLUTE project is the development and fundamental examination of new concepts and technologies for the generation of intensive and ultra-broad-band THz pulses fed by femtosecond electron-bunches. In order to study the various mechanisms influencing the final THz pulses, data-acquisition and storage systems are required that allow for the correlation of beam parameters on a per-pulse basis. In parallel to the construction of the accelerator and the THz beam-line, a modern, EPICS-based control system is being developed. This control system combines well-established techniques (like S7 PLCs, Ethernet, and EPICS) with rather new components (like MicroTCA, Control System Studio, and NoSQL databases) in order to provide a robust, stable system, that meets the performance requirements. We present the design concept behind the FLUTE control system and report on the status of the commissioning process.

Slides WPO013 [1.313 MB]

FPO002

Picosecond Sampling Electronics for Terahertz Synchrotron Radiation

167

FPI02

use link to see paper's listing under its alternate paper code

C.M. Caselle, B.M. Balzer, M. Brosi, S.A. Chilingaryan, T. Dritschler, V. Judin, A. Kopmann, A.-S. Müller, L. Petzold, J. Raasch, L. Rota, M. Siegel, N.J. Smale, J.L. Steinmann, M. Vogelgesang, M. Weber, S. Wuensch
KIT, Karlsruhe, Germany

To study the synchrotron terahertz emission superconducting (YBCO) film detectors are used with the intrinsic response time in the order of a few picoseconds. For fast, continuous sampling of the individual THz ultra-short pulses a novel digitizer system has been developed. The system consists of detector, wideband low-noise amplifier, fast pulse digitizer board, back-end readout board. High-end graphic processing units (GPUs) perform real-time data analysis. Four samples with 12 bit are recorded in parallel for each fast pulse with programmable sampling times in the range of 3 to 100 ps. A new bus master DMA engine connected to PCI express endpoint has been developed to ensure a continuous high data throughput of up to 4 GByte/s. This heterogeneous real-time system architecture based on FPGA and GPU has successful been used for on-line pulse reconstruction and evaluations and calculates the peak amplitude of each pulse and the time between consecutive bunches with a picosecond time resolution at ANKA. A Fast Fourier Transform (FFT) is performed on-line for the frequency analysis of the CSR undulations.

Slides FPO002 [1.153 MB]