X.H. Tang, J.S. Cao, Y.Y. Du, J. He, Y.F. Sui, J.H. Yue
IHEP, Beijing, People’s Republic of China
Determining the mechanical center of the beam position monitor(BPM) has been a difficulty for BPM calibration. To solve this problem, a method of positioning the BPM mechanical center based on laser ranging is proposed. This method uses high-precision antenna support as the core locating datum, and high-precision laser ranging sensors(LRSs) as the detection tool. By detecting the distances from the LRSs to the antenna support and the distances from the LRSs to the BPM, the mechanical center of the BPM can be indirectly determined. The theoretical system error of this method is within 20¿m, and the experimental results show that the measurement repeatability is less than 40¿m, This method has low cost and fast speed, which can be used for large-scale calibration.
G. Türemen, S. Bulut, U. Kaya, D. Porsuk, N.O. Serin, E. Yeltepe
TENMAK-NUKEN, Ankara, Turkey
Funding:Turkish Energy, Nuclear and Minerals Research Agency A 30 MeV cyclotron is operated at TENMAK-NUKEN for producing medical radioisotopes with three beamlines and a fourth beamline is dedicated for research purposes. The minimum energy of extracted proton beam from cyclotron is 15 MeV. There is no facility in Türkiye for applying ion beam analysis techniques (IBA) currently. These techniques generally require 1-5 MeV proton beam energy. An energy degrader system was designed and installed on the R&D beamline for this purpose. The degrader system is capable of decreasing the energy down to 1 MeV with pA to uA current levels. A high vacuum irradiation chamber is designed and installed at the end of the beamline. The chamber has ports to install several types of detectors for different IBA techniques. This work includes the description of the setup and preliminary PIXE measurements.
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P. Freyermuth, B. Dupuy, D. Gamba
CERN, Meyrin, Switzerland
Constant optimisation and diagnostics of the cooling processes in the CERN antiproton decelerator (AD) relies on a de-bunched beam momentum spread real time measurement. This article will describe the renovation of the acquisition chain of the longitudinal Schottky diagnostics in the AD, using standard CERN hardware and software to maximize reliability, ease maintenance, and meet the requirements for standard operational tools. The whole chain, from the pick-up to the operation software applications will be described with emphasis on the implementation of the data processing running on the front-end computer. Limitations will also be discussed and outlook for further development given.
P.H. Baeta Neves Diniz Santos
PSI, Villigen PSI, Switzerland
Having effectively evaluated the RF System-On-Chip (RFSoC) as a suitable technology for the SLS2.0 Filling Pattern Feedback (FPFB) and Multi-bunch Feedback (MBFB) [1], our current focus lies in realizing and expanding the required real-time Digital Signal Processing (DSP) algorithms on an RFSoC evaluation board. This contribution outlines the present status of our feedback systems, including recent outcomes derived from testing prototypes both in the laboratory and with beam signals at the storage ring. [1] P. Baeta et al., "RF System-on-Chip for Multi-Bunch and Filling-Pattern Feedbacks," Proc. IBIC’22
P.J. Niedermayer, R.N. Geißler, R. Singh
GSI, Darmstadt, Germany
Funding:This project has received funding from the European Union¿s Horizon 2020 Research and Innovation programme under GA No 101004730. Controlling stored beams in particle accelerators requires specially designed RF signals, such as needed for spill control via transverse excitation. The software-defined radio (SDR) technology is adopted as a low cost, yet highly flexible setup to generate such signals in the kHz to MHz regime. A feedback system is build using a combination of digital signal processing with GNU Radio and RF Network-on-Chip (RFNoC) on a Universal Software Radio Peripheral (USRP). The system enables digitization of signals from particle detectors and direct tuning of the produced RF waveforms via a feedback controller – implemented on a single device. To allow for triggered operation and to reduce the loop delay to a few ms, custom OOT and RFNoC blocks have been implemented. This contribution reports on the implementation and first test results with beam of the developed spill control system.
M. Kuntzsch, M. Justus, A. Schwarz, K. Zenker
HZDR, Dresden, Germany
L. Krmpotić, U. Legat, Z. Oven, L. Perusko, U. Rojec
Cosylab, Ljubljana, Slovenia
The CW electron accelerator ELBE is in operation for more than two decades. The timing system has been patched several times in order to meet changing requirements. In 2019 the development of a new timing system based on Micro Research Finland Hardware has been started which is designed to unify the heterogeneous structure and to replace obsolete components. In spring 2023 the development of the software has been accomplished, which included the mapping of operation mode and different complex beam patterns onto the capabilities of the commercial platform. The system generates complex beam patterns from single pulse, to macro pulse and 26 MHz cw operation including special triggers for diagnostics and machine subsystems. The contribution will describe the path from requirements to development and commissioning of the new timing system at ELBE.
