Mikrofonien monitorizazio eta kontrola RF kabitateetan
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IZPILAB, partikula azeleragailuen ikerketa eta garapena egiten duen EHU-ko laborategia da. Bertan dagoenMaila Baxuko Irrati Maiztasun (ingelesez Low Level Radio Frequency, LLRF) sistema batean oinarrituta, irratimaiztasun (ingelesez radio frequency, RF) kabitateetan ematen den mikrofonien ondoriozko desintonizazioarenmonitorizazio eta kontrola egiteko prototipo funtzional bat garatu da.Prozesu horretan, sistemaren kabitateerresonantearen identifikazio mekanikoa egin ondoren, bi erresonantzia-modu nabarmen aurkitu dira, 305 eta 458Hz-etan, nagusiena lehenengo hori izanda. Halaber, 305 Hz-eko modu mekanikoa kitzikatzen duen mikrofoniakontrolatzeko Adaptive Feedforward (AFF) kontrolagailu bat inplementatu da sortutako prototipoan.Moduhorretan, maiztasun horretako perturbazio mekanikoak %95a txikitzea lortu da.
In this work a Low Level Radio frequency (LLRF) system is used as the foundation of a new functional prototypeto control and monitorize the microphonic detuning of a RF cavity. For that matter, a mechanical identificationof the RF cavity has been done, founding two relevant resonant modes at 305 and 458 Hz. For testing purposes,an Adaptive Feed forward (AFF) controller has been integrated on the developed prototype, achieving a 95%reduction of the 305 Hz microphonic detuning.
In this work a Low Level Radio frequency (LLRF) system is used as the foundation of a new functional prototypeto control and monitorize the microphonic detuning of a RF cavity. For that matter, a mechanical identificationof the RF cavity has been done, founding two relevant resonant modes at 305 and 458 Hz. For testing purposes,an Adaptive Feed forward (AFF) controller has been integrated on the developed prototype, achieving a 95%reduction of the 305 Hz microphonic detuning.
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Mikrofoniak, kontrol aktiboa, LLRF, IM kabitatea, Microphonics, active control, LLRF, RF cavity