25 research outputs found
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Analog signal pre-processing for the Fermilab Main Injector BPM upgrade
An analog signal pre-processing scheme was developed, in the framework of the Fermilab Main Injector Beam Position Monitor (BPM) Upgrade, to interface BPM pickup signals to the new digital receiver based read-out system. A key component is the 8-channel electronics module, which uses separate frequency selective gain stages to acquire 53 MHz bunched proton, and 2.5 MHz anti-proton signals. Related hardware includes a filter and combiner box to sum pickup electrode signals in the tunnel. A controller module allows local/remote control of gain settings and activation of gain stages, and supplies test signals. Theory of operation, system overview, and some design details are presented, as well as first beam measurements of the prototype hardware
Beam halo dynamics and control with hollow electron beams
Experimental measurements of beam halo diffusion dynamics with collimator
scans are reviewed. The concept of halo control with a hollow electron beam
collimator, its demonstration at the Tevatron, and its possible applications at
the LHC are discussed.Comment: 5 pages, 4 figures, in Proceedings of the 52nd ICFA Advanced Beam
Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams
(HB2012), Beijing, China, 17-21 September 201
ML-based Real-Time Control at the Edge: An Approach Using hls4ml
This study focuses on implementing a real-time control system for a particle
accelerator facility that performs high energy physics experiments. A critical
operating parameter in this facility is beam loss, which is the fraction of
particles deviating from the accelerated proton beam into a cascade of
secondary particles. Accelerators employ a large number of sensors to monitor
beam loss. The data from these sensors is monitored by human operators who
predict the relative contribution of different sub-systems to the beam loss.
Using this information, they engage control interventions. In this paper, we
present a controller to track this phenomenon in real-time using edge-Machine
Learning (ML) and support control with low latency and high accuracy. We
implemented this system on an Intel Arria 10 SoC. Optimizations at the
algorithm, high-level synthesis, and interface levels to improve latency and
resource usage are presented. Our design implements a neural network, which can
predict the main source of beam loss (between two possible causes) at speeds up
to 575 frames per second (fps) (average latency of 1.74 ms). The practical
deployed system is required to operate at 320 fps, with a 3ms latency
requirement, which has been met by our design successfully
Fermilab Main Injector Beam Position Monitor Upgrade
An upgrade of the Beam Position Monitor (BPM) signal processing and data acquisition system for the Fermilab Main Injector is described. The Main Injector is a fast cycling synchrotron that accelerates protons or antiprotons from 8 to 150 GeV. Each Main Injector cycle can have a totally different magnet ramp, RF frequency configuration, beam bunch structure, and injection/extraction pattern from the previous cycle. The new BPM system provides the capabilities and flexibility required by the dynamic and complex machine operations. The system offers measurement capability in the 2.5 MHz and 53 MHz channels to detect the range of bunch structures for protons and antiprotons in both wideband (turn-by-turn) and narrowband (closed-orbit) modes. The new BPM read-out system is based on the digital receiver concept and is highly configurable, allowing the signal processing of nearly all Main Injector beam conditions, including the detection of individual batches. An overview of the BPM system in the Main Injector operating environment, some technology details and first beam measurements are presented
Analog Signal Pre-Processing For The Fermilab Main Injector BPM Upgrade
An analog signal pre-processing scheme was developed, in the framework of the Fermilab Main Injector Beam Position Monitor (BPM) Upgrade, to interface BPM pickup signals to the new digital receiver based read-out system. A key component is the 8-channel electronics module, which uses separate frequency selective gain stages to acquire 53 MHz bunched proton, and 2.5 MHz anti-proton signals. Related hardware includes a filter and combiner box to sum pickup electrode signals in the tunnel. A controller module allows local/remote control of gain settings and activation of gain stages, and supplies test signals. Theory of operation, system overview, and some design details are presented, as well as first beam measurements of the prototype hardware