3 GHz digital rf control at the superconducting Darmstadt electron linear accelerator: First results from the baseband approach and extensions for other frequencies
Citations
19 citations
Cites background from "3 GHz digital rf control at the sup..."
...Zero-IF architectures have incorporated recent digital signal control and processing technologies, and they are still used in LLRF systems [10], mainly in the RF generation part combined with IF sampling [11]–[18]....
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14 citations
Cites background from "3 GHz digital rf control at the sup..."
...12a shows this data plotted for one of the prototype rf boards developed in the context of [41, 42]....
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...Prototypes of these boards have been developed by [39, 40, 41] and have also been described in [42]....
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12 citations
Cites methods from "3 GHz digital rf control at the sup..."
...The IQ method, also called the quadrature demodulation method, is a common approach to implement high-accuracy RF signal measurements and has been widely adopted by LLRF systems [3]–[6]....
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...An alternative method is to implement one single channel, and the phase deviation from a setpoint is measured [6]....
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...The architecture of generic wireless transceivers has been adopted in LLRF system design [3]–[6]....
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...Reference [6] adopts a homodyne architecture that is also called zero-IF and digitizes baseband signal using a sampling rate of 1 Msps....
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10 citations
Cites background from "3 GHz digital rf control at the sup..."
...Später wurden im Rahmen von [37, 38] und [16] neue Revisionen entwickelt und schließlich in den regulären Betrieb überführt [39]....
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7 citations
Cites background from "3 GHz digital rf control at the sup..."
...Beispielhaft seien hier der Einbau einer Quelle für spinpolarisierte Elektronen [10,11] und der Aufbau einer digitalen Hochfrequenzregelung für die normalleitenden und supraleitenden Beschleunigerresonatoren genannt [12,13]....
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...Nach dem Aufbau der digitalen Hochfrequenzregelung [12, 13] ist die Einstellung der Phasenachse auf eine beliebige Synchrotronphase nun problemlos möglich....
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...Die Nutzung der FPGA-Module (Field Programmable Gate Array) der digitalen HF-Regelung [12, 13] erlaubt es, die Verstärkungswerte und O sets des HFModuls ferngesteuert über das Kontrollsystem des S DALINAC zu verändern....
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...Die neu in Betrieb genommene digitale Hochfrequenzregelung [12,13] hat in diesem Zusammenhang bereits deutliche Vorteile bezüglich der Stabilität und Reproduzierbarkeit von Setzwerten gebracht....
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References
6 citations
"3 GHz digital rf control at the sup..." refers background in this paper
...As a first step, the upgraded injector linac [12] will be operated with the new system soon....
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...[12] T....
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5 citations
"3 GHz digital rf control at the sup..." refers methods in this paper
...Therefore an iterative algorithm, which is called coordinate rotation digital computer (CORDIC) [10], converts the Cartesian (I=Q) to polar (phase and amplitude) coordinates....
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...[10] J....
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2 citations
"3 GHz digital rf control at the sup..." refers background in this paper
...Currently, a 6 GHz version, needed for a harmonic bunching system, is under design [8]....
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...[8] B....
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