Compact and efficient radio frequency digital feedback control system for accelerator applications
The digital feedback (DFB) setup employed in a low-level radio frequency (LLRF) control system is crucial to ensure RF field stability in accelerating cavities, thus guaranteeing successful operation. To this end, a novel in-house and multi-purpose prototype DFB setup was developed for multiple appl...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Cicek, Ersin [verfasserIn] Futatsukawa, Kenta [verfasserIn] Fang, Zhigao [verfasserIn] Fukui, Yuji [verfasserIn] Mizobata, Satoshi [verfasserIn] Otani, Masashi [verfasserIn] Kondo, Yasuhiro [verfasserIn] Morishita, Takatoshi [verfasserIn] Nakazawa, Yuga [verfasserIn] Sato, Yoshikatsu [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Nuclear instruments & methods in physics research / A - Amsterdam : North-Holland Publ. Co., 1984, 1046 |
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| Übergeordnetes Werk: |
volume:1046 |
| DOI / URN: |
10.1016/j.nima.2022.167700 |
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| Katalog-ID: |
ELV059702559 |
|---|
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| 520 | |a The digital feedback (DFB) setup employed in a low-level radio frequency (LLRF) control system is crucial to ensure RF field stability in accelerating cavities, thus guaranteeing successful operation. To this end, a novel in-house and multi-purpose prototype DFB setup was developed for multiple applications at the Japan Proton Accelerator Research Complex (J-PARC). Being efficient, low-cost, and compact is key to achieving a cost-effective system that fulfills the performance specifications. It also reduces the production and maintenance costs of future DFB setups. A field-programmable gate array (FPGA)-based design with a digital signal processing (DSP) function uses an analog in-phase/quadrature-phase (I/Q) demodulator for RF-to-baseband signal conversion and an I/Q modulator to generate RF power. This arrangement compensates for RF phase fluctuations and amplitude modulations by employing a proportional and integral (PI) feedback controller. In addition, systematic errors are minimized by applying a hardware-error-compensation process. The system was utilized to conduct high-power tests on the interdigital H-mode drift-tube linac (IH-DTL) cavity of a muon linac for short RF pulses. The setup was also tested on a buncher cavity (Buncher-2) in the J-PARC linac, achieving efficient performance for longer RF pulses. The stability of the RF accelerating field in the IH-DTL was achieved at ± 0 . 25 % peak-to-peak (pp) in amplitude and ± 0.36 degree pp in phase. For the Buncher-2, the amplitude stability of ± 0 . 18 % pp and phase stability of ± 0.13 degree pp were obtained. Therefore, this DFB setup can be used to conduct high-power tests of RF cavities and klystrons. This study discusses the design aspects of a cost-effective DFB system and reports high-power measurements. | ||
| 650 | 4 | |a Low-level RF control system | |
| 650 | 4 | |a Digital feedback | |
| 650 | 4 | |a FPGA | |
| 650 | 4 | |a Error correction | |
| 700 | 1 | |a Futatsukawa, Kenta |e verfasserin |0 (orcid)0000-0002-3110-0472 |4 aut | |
| 700 | 1 | |a Fang, Zhigao |e verfasserin |0 (orcid)0000-0002-0926-8770 |4 aut | |
| 700 | 1 | |a Fukui, Yuji |e verfasserin |0 (orcid)0000-0003-3009-2375 |4 aut | |
| 700 | 1 | |a Mizobata, Satoshi |e verfasserin |0 (orcid)0000-0002-4982-1171 |4 aut | |
| 700 | 1 | |a Otani, Masashi |e verfasserin |0 (orcid)0000-0001-6416-570X |4 aut | |
| 700 | 1 | |a Kondo, Yasuhiro |e verfasserin |0 (orcid)0000-0001-7697-9225 |4 aut | |
| 700 | 1 | |a Morishita, Takatoshi |e verfasserin |0 (orcid)0000-0003-0720-0606 |4 aut | |
| 700 | 1 | |a Nakazawa, Yuga |e verfasserin |0 (orcid)0000-0003-4671-1345 |4 aut | |
| 700 | 1 | |a Sato, Yoshikatsu |e verfasserin |0 (orcid)0000-0001-8777-7813 |4 aut | |
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10.1016/j.nima.2022.167700 doi (DE-627)ELV059702559 (ELSEVIER)S0168-9002(22)00992-5 DE-627 ger DE-627 rda eng 530 VZ 33.05 bkl 33.07 bkl 33.40 bkl Cicek, Ersin verfasserin (orcid)0000-0001-7177-8053 aut Compact and efficient radio frequency digital feedback control system for accelerator applications 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The digital feedback (DFB) setup employed in a low-level radio frequency (LLRF) control system is crucial to ensure RF field stability in accelerating cavities, thus guaranteeing successful operation. To this end, a novel in-house and multi-purpose prototype DFB setup was developed for multiple applications at the Japan Proton Accelerator Research Complex (J-PARC). Being efficient, low-cost, and compact is key to achieving a cost-effective system that fulfills the performance specifications. It also reduces the production and maintenance costs of future DFB setups. A field-programmable gate array (FPGA)-based design with a digital signal processing (DSP) function uses an analog in-phase/quadrature-phase (I/Q) demodulator for RF-to-baseband signal conversion and an I/Q modulator to generate RF power. This arrangement compensates for RF phase fluctuations and amplitude modulations by employing a proportional and integral (PI) feedback controller. In addition, systematic errors are minimized by applying a hardware-error-compensation process. The system was utilized to conduct high-power tests on the interdigital H-mode drift-tube linac (IH-DTL) cavity of a muon linac for short RF pulses. The setup was also tested on a buncher cavity (Buncher-2) in the J-PARC linac, achieving efficient performance for longer RF pulses. The stability of the RF accelerating field in the IH-DTL was achieved at ± 0 . 25 % peak-to-peak (pp) in amplitude and ± 0.36 degree pp in phase. For the Buncher-2, the amplitude stability of ± 0 . 18 % pp and phase stability of ± 0.13 degree pp were obtained. Therefore, this DFB setup can be used to conduct high-power tests of RF cavities and klystrons. This study discusses the design aspects of a cost-effective DFB system and reports high-power measurements. Low-level RF control system Digital feedback FPGA Error correction Futatsukawa, Kenta verfasserin (orcid)0000-0002-3110-0472 aut Fang, Zhigao verfasserin (orcid)0000-0002-0926-8770 aut Fukui, Yuji verfasserin (orcid)0000-0003-3009-2375 aut Mizobata, Satoshi verfasserin (orcid)0000-0002-4982-1171 aut Otani, Masashi verfasserin (orcid)0000-0001-6416-570X aut Kondo, Yasuhiro verfasserin (orcid)0000-0001-7697-9225 aut Morishita, Takatoshi verfasserin (orcid)0000-0003-0720-0606 aut Nakazawa, Yuga verfasserin (orcid)0000-0003-4671-1345 aut Sato, Yoshikatsu verfasserin (orcid)0000-0001-8777-7813 aut Enthalten in Nuclear instruments & methods in physics research / A Amsterdam : North-Holland Publ. Co., 1984 1046 Online-Ressource (DE-627)266014666 (DE-600)1466532-3 (DE-576)074959743 0168-9002 nnns volume:1046 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 33.05 Experimentalphysik VZ 33.07 Spektroskopie VZ 33.40 Kernphysik VZ AR 1046 |
| spelling |
10.1016/j.nima.2022.167700 doi (DE-627)ELV059702559 (ELSEVIER)S0168-9002(22)00992-5 DE-627 ger DE-627 rda eng 530 VZ 33.05 bkl 33.07 bkl 33.40 bkl Cicek, Ersin verfasserin (orcid)0000-0001-7177-8053 aut Compact and efficient radio frequency digital feedback control system for accelerator applications 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The digital feedback (DFB) setup employed in a low-level radio frequency (LLRF) control system is crucial to ensure RF field stability in accelerating cavities, thus guaranteeing successful operation. To this end, a novel in-house and multi-purpose prototype DFB setup was developed for multiple applications at the Japan Proton Accelerator Research Complex (J-PARC). Being efficient, low-cost, and compact is key to achieving a cost-effective system that fulfills the performance specifications. It also reduces the production and maintenance costs of future DFB setups. A field-programmable gate array (FPGA)-based design with a digital signal processing (DSP) function uses an analog in-phase/quadrature-phase (I/Q) demodulator for RF-to-baseband signal conversion and an I/Q modulator to generate RF power. This arrangement compensates for RF phase fluctuations and amplitude modulations by employing a proportional and integral (PI) feedback controller. In addition, systematic errors are minimized by applying a hardware-error-compensation process. The system was utilized to conduct high-power tests on the interdigital H-mode drift-tube linac (IH-DTL) cavity of a muon linac for short RF pulses. The setup was also tested on a buncher cavity (Buncher-2) in the J-PARC linac, achieving efficient performance for longer RF pulses. The stability of the RF accelerating field in the IH-DTL was achieved at ± 0 . 25 % peak-to-peak (pp) in amplitude and ± 0.36 degree pp in phase. For the Buncher-2, the amplitude stability of ± 0 . 18 % pp and phase stability of ± 0.13 degree pp were obtained. Therefore, this DFB setup can be used to conduct high-power tests of RF cavities and klystrons. This study discusses the design aspects of a cost-effective DFB system and reports high-power measurements. Low-level RF control system Digital feedback FPGA Error correction Futatsukawa, Kenta verfasserin (orcid)0000-0002-3110-0472 aut Fang, Zhigao verfasserin (orcid)0000-0002-0926-8770 aut Fukui, Yuji verfasserin (orcid)0000-0003-3009-2375 aut Mizobata, Satoshi verfasserin (orcid)0000-0002-4982-1171 aut Otani, Masashi verfasserin (orcid)0000-0001-6416-570X aut Kondo, Yasuhiro verfasserin (orcid)0000-0001-7697-9225 aut Morishita, Takatoshi verfasserin (orcid)0000-0003-0720-0606 aut Nakazawa, Yuga verfasserin (orcid)0000-0003-4671-1345 aut Sato, Yoshikatsu verfasserin (orcid)0000-0001-8777-7813 aut Enthalten in Nuclear instruments & methods in physics research / A Amsterdam : North-Holland Publ. Co., 1984 1046 Online-Ressource (DE-627)266014666 (DE-600)1466532-3 (DE-576)074959743 0168-9002 nnns volume:1046 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 33.05 Experimentalphysik VZ 33.07 Spektroskopie VZ 33.40 Kernphysik VZ AR 1046 |
| allfields_unstemmed |
10.1016/j.nima.2022.167700 doi (DE-627)ELV059702559 (ELSEVIER)S0168-9002(22)00992-5 DE-627 ger DE-627 rda eng 530 VZ 33.05 bkl 33.07 bkl 33.40 bkl Cicek, Ersin verfasserin (orcid)0000-0001-7177-8053 aut Compact and efficient radio frequency digital feedback control system for accelerator applications 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The digital feedback (DFB) setup employed in a low-level radio frequency (LLRF) control system is crucial to ensure RF field stability in accelerating cavities, thus guaranteeing successful operation. To this end, a novel in-house and multi-purpose prototype DFB setup was developed for multiple applications at the Japan Proton Accelerator Research Complex (J-PARC). Being efficient, low-cost, and compact is key to achieving a cost-effective system that fulfills the performance specifications. It also reduces the production and maintenance costs of future DFB setups. A field-programmable gate array (FPGA)-based design with a digital signal processing (DSP) function uses an analog in-phase/quadrature-phase (I/Q) demodulator for RF-to-baseband signal conversion and an I/Q modulator to generate RF power. This arrangement compensates for RF phase fluctuations and amplitude modulations by employing a proportional and integral (PI) feedback controller. In addition, systematic errors are minimized by applying a hardware-error-compensation process. The system was utilized to conduct high-power tests on the interdigital H-mode drift-tube linac (IH-DTL) cavity of a muon linac for short RF pulses. The setup was also tested on a buncher cavity (Buncher-2) in the J-PARC linac, achieving efficient performance for longer RF pulses. The stability of the RF accelerating field in the IH-DTL was achieved at ± 0 . 25 % peak-to-peak (pp) in amplitude and ± 0.36 degree pp in phase. For the Buncher-2, the amplitude stability of ± 0 . 18 % pp and phase stability of ± 0.13 degree pp were obtained. Therefore, this DFB setup can be used to conduct high-power tests of RF cavities and klystrons. This study discusses the design aspects of a cost-effective DFB system and reports high-power measurements. Low-level RF control system Digital feedback FPGA Error correction Futatsukawa, Kenta verfasserin (orcid)0000-0002-3110-0472 aut Fang, Zhigao verfasserin (orcid)0000-0002-0926-8770 aut Fukui, Yuji verfasserin (orcid)0000-0003-3009-2375 aut Mizobata, Satoshi verfasserin (orcid)0000-0002-4982-1171 aut Otani, Masashi verfasserin (orcid)0000-0001-6416-570X aut Kondo, Yasuhiro verfasserin (orcid)0000-0001-7697-9225 aut Morishita, Takatoshi verfasserin (orcid)0000-0003-0720-0606 aut Nakazawa, Yuga verfasserin (orcid)0000-0003-4671-1345 aut Sato, Yoshikatsu verfasserin (orcid)0000-0001-8777-7813 aut Enthalten in Nuclear instruments & methods in physics research / A Amsterdam : North-Holland Publ. Co., 1984 1046 Online-Ressource (DE-627)266014666 (DE-600)1466532-3 (DE-576)074959743 0168-9002 nnns volume:1046 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 33.05 Experimentalphysik VZ 33.07 Spektroskopie VZ 33.40 Kernphysik VZ AR 1046 |
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10.1016/j.nima.2022.167700 doi (DE-627)ELV059702559 (ELSEVIER)S0168-9002(22)00992-5 DE-627 ger DE-627 rda eng 530 VZ 33.05 bkl 33.07 bkl 33.40 bkl Cicek, Ersin verfasserin (orcid)0000-0001-7177-8053 aut Compact and efficient radio frequency digital feedback control system for accelerator applications 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The digital feedback (DFB) setup employed in a low-level radio frequency (LLRF) control system is crucial to ensure RF field stability in accelerating cavities, thus guaranteeing successful operation. To this end, a novel in-house and multi-purpose prototype DFB setup was developed for multiple applications at the Japan Proton Accelerator Research Complex (J-PARC). Being efficient, low-cost, and compact is key to achieving a cost-effective system that fulfills the performance specifications. It also reduces the production and maintenance costs of future DFB setups. A field-programmable gate array (FPGA)-based design with a digital signal processing (DSP) function uses an analog in-phase/quadrature-phase (I/Q) demodulator for RF-to-baseband signal conversion and an I/Q modulator to generate RF power. This arrangement compensates for RF phase fluctuations and amplitude modulations by employing a proportional and integral (PI) feedback controller. In addition, systematic errors are minimized by applying a hardware-error-compensation process. The system was utilized to conduct high-power tests on the interdigital H-mode drift-tube linac (IH-DTL) cavity of a muon linac for short RF pulses. The setup was also tested on a buncher cavity (Buncher-2) in the J-PARC linac, achieving efficient performance for longer RF pulses. The stability of the RF accelerating field in the IH-DTL was achieved at ± 0 . 25 % peak-to-peak (pp) in amplitude and ± 0.36 degree pp in phase. For the Buncher-2, the amplitude stability of ± 0 . 18 % pp and phase stability of ± 0.13 degree pp were obtained. Therefore, this DFB setup can be used to conduct high-power tests of RF cavities and klystrons. This study discusses the design aspects of a cost-effective DFB system and reports high-power measurements. Low-level RF control system Digital feedback FPGA Error correction Futatsukawa, Kenta verfasserin (orcid)0000-0002-3110-0472 aut Fang, Zhigao verfasserin (orcid)0000-0002-0926-8770 aut Fukui, Yuji verfasserin (orcid)0000-0003-3009-2375 aut Mizobata, Satoshi verfasserin (orcid)0000-0002-4982-1171 aut Otani, Masashi verfasserin (orcid)0000-0001-6416-570X aut Kondo, Yasuhiro verfasserin (orcid)0000-0001-7697-9225 aut Morishita, Takatoshi verfasserin (orcid)0000-0003-0720-0606 aut Nakazawa, Yuga verfasserin (orcid)0000-0003-4671-1345 aut Sato, Yoshikatsu verfasserin (orcid)0000-0001-8777-7813 aut Enthalten in Nuclear instruments & methods in physics research / A Amsterdam : North-Holland Publ. Co., 1984 1046 Online-Ressource (DE-627)266014666 (DE-600)1466532-3 (DE-576)074959743 0168-9002 nnns volume:1046 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 33.05 Experimentalphysik VZ 33.07 Spektroskopie VZ 33.40 Kernphysik VZ AR 1046 |
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10.1016/j.nima.2022.167700 doi (DE-627)ELV059702559 (ELSEVIER)S0168-9002(22)00992-5 DE-627 ger DE-627 rda eng 530 VZ 33.05 bkl 33.07 bkl 33.40 bkl Cicek, Ersin verfasserin (orcid)0000-0001-7177-8053 aut Compact and efficient radio frequency digital feedback control system for accelerator applications 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The digital feedback (DFB) setup employed in a low-level radio frequency (LLRF) control system is crucial to ensure RF field stability in accelerating cavities, thus guaranteeing successful operation. To this end, a novel in-house and multi-purpose prototype DFB setup was developed for multiple applications at the Japan Proton Accelerator Research Complex (J-PARC). Being efficient, low-cost, and compact is key to achieving a cost-effective system that fulfills the performance specifications. It also reduces the production and maintenance costs of future DFB setups. A field-programmable gate array (FPGA)-based design with a digital signal processing (DSP) function uses an analog in-phase/quadrature-phase (I/Q) demodulator for RF-to-baseband signal conversion and an I/Q modulator to generate RF power. This arrangement compensates for RF phase fluctuations and amplitude modulations by employing a proportional and integral (PI) feedback controller. In addition, systematic errors are minimized by applying a hardware-error-compensation process. The system was utilized to conduct high-power tests on the interdigital H-mode drift-tube linac (IH-DTL) cavity of a muon linac for short RF pulses. The setup was also tested on a buncher cavity (Buncher-2) in the J-PARC linac, achieving efficient performance for longer RF pulses. The stability of the RF accelerating field in the IH-DTL was achieved at ± 0 . 25 % peak-to-peak (pp) in amplitude and ± 0.36 degree pp in phase. For the Buncher-2, the amplitude stability of ± 0 . 18 % pp and phase stability of ± 0.13 degree pp were obtained. Therefore, this DFB setup can be used to conduct high-power tests of RF cavities and klystrons. This study discusses the design aspects of a cost-effective DFB system and reports high-power measurements. Low-level RF control system Digital feedback FPGA Error correction Futatsukawa, Kenta verfasserin (orcid)0000-0002-3110-0472 aut Fang, Zhigao verfasserin (orcid)0000-0002-0926-8770 aut Fukui, Yuji verfasserin (orcid)0000-0003-3009-2375 aut Mizobata, Satoshi verfasserin (orcid)0000-0002-4982-1171 aut Otani, Masashi verfasserin (orcid)0000-0001-6416-570X aut Kondo, Yasuhiro verfasserin (orcid)0000-0001-7697-9225 aut Morishita, Takatoshi verfasserin (orcid)0000-0003-0720-0606 aut Nakazawa, Yuga verfasserin (orcid)0000-0003-4671-1345 aut Sato, Yoshikatsu verfasserin (orcid)0000-0001-8777-7813 aut Enthalten in Nuclear instruments & methods in physics research / A Amsterdam : North-Holland Publ. Co., 1984 1046 Online-Ressource (DE-627)266014666 (DE-600)1466532-3 (DE-576)074959743 0168-9002 nnns volume:1046 GBV_USEFLAG_U GBV_ELV SYSFLAG_U GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 33.05 Experimentalphysik VZ 33.07 Spektroskopie VZ 33.40 Kernphysik VZ AR 1046 |
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Cicek, Ersin @@aut@@ Futatsukawa, Kenta @@aut@@ Fang, Zhigao @@aut@@ Fukui, Yuji @@aut@@ Mizobata, Satoshi @@aut@@ Otani, Masashi @@aut@@ Kondo, Yasuhiro @@aut@@ Morishita, Takatoshi @@aut@@ Nakazawa, Yuga @@aut@@ Sato, Yoshikatsu @@aut@@ |
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530 VZ 33.05 bkl 33.07 bkl 33.40 bkl Compact and efficient radio frequency digital feedback control system for accelerator applications Low-level RF control system Digital feedback FPGA Error correction |
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Cicek, Ersin Futatsukawa, Kenta Fang, Zhigao Fukui, Yuji Mizobata, Satoshi Otani, Masashi Kondo, Yasuhiro Morishita, Takatoshi Nakazawa, Yuga Sato, Yoshikatsu |
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compact and efficient radio frequency digital feedback control system for accelerator applications |
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Compact and efficient radio frequency digital feedback control system for accelerator applications |
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The digital feedback (DFB) setup employed in a low-level radio frequency (LLRF) control system is crucial to ensure RF field stability in accelerating cavities, thus guaranteeing successful operation. To this end, a novel in-house and multi-purpose prototype DFB setup was developed for multiple applications at the Japan Proton Accelerator Research Complex (J-PARC). Being efficient, low-cost, and compact is key to achieving a cost-effective system that fulfills the performance specifications. It also reduces the production and maintenance costs of future DFB setups. A field-programmable gate array (FPGA)-based design with a digital signal processing (DSP) function uses an analog in-phase/quadrature-phase (I/Q) demodulator for RF-to-baseband signal conversion and an I/Q modulator to generate RF power. This arrangement compensates for RF phase fluctuations and amplitude modulations by employing a proportional and integral (PI) feedback controller. In addition, systematic errors are minimized by applying a hardware-error-compensation process. The system was utilized to conduct high-power tests on the interdigital H-mode drift-tube linac (IH-DTL) cavity of a muon linac for short RF pulses. The setup was also tested on a buncher cavity (Buncher-2) in the J-PARC linac, achieving efficient performance for longer RF pulses. The stability of the RF accelerating field in the IH-DTL was achieved at ± 0 . 25 % peak-to-peak (pp) in amplitude and ± 0.36 degree pp in phase. For the Buncher-2, the amplitude stability of ± 0 . 18 % pp and phase stability of ± 0.13 degree pp were obtained. Therefore, this DFB setup can be used to conduct high-power tests of RF cavities and klystrons. This study discusses the design aspects of a cost-effective DFB system and reports high-power measurements. |
| abstractGer |
The digital feedback (DFB) setup employed in a low-level radio frequency (LLRF) control system is crucial to ensure RF field stability in accelerating cavities, thus guaranteeing successful operation. To this end, a novel in-house and multi-purpose prototype DFB setup was developed for multiple applications at the Japan Proton Accelerator Research Complex (J-PARC). Being efficient, low-cost, and compact is key to achieving a cost-effective system that fulfills the performance specifications. It also reduces the production and maintenance costs of future DFB setups. A field-programmable gate array (FPGA)-based design with a digital signal processing (DSP) function uses an analog in-phase/quadrature-phase (I/Q) demodulator for RF-to-baseband signal conversion and an I/Q modulator to generate RF power. This arrangement compensates for RF phase fluctuations and amplitude modulations by employing a proportional and integral (PI) feedback controller. In addition, systematic errors are minimized by applying a hardware-error-compensation process. The system was utilized to conduct high-power tests on the interdigital H-mode drift-tube linac (IH-DTL) cavity of a muon linac for short RF pulses. The setup was also tested on a buncher cavity (Buncher-2) in the J-PARC linac, achieving efficient performance for longer RF pulses. The stability of the RF accelerating field in the IH-DTL was achieved at ± 0 . 25 % peak-to-peak (pp) in amplitude and ± 0.36 degree pp in phase. For the Buncher-2, the amplitude stability of ± 0 . 18 % pp and phase stability of ± 0.13 degree pp were obtained. Therefore, this DFB setup can be used to conduct high-power tests of RF cavities and klystrons. This study discusses the design aspects of a cost-effective DFB system and reports high-power measurements. |
| abstract_unstemmed |
The digital feedback (DFB) setup employed in a low-level radio frequency (LLRF) control system is crucial to ensure RF field stability in accelerating cavities, thus guaranteeing successful operation. To this end, a novel in-house and multi-purpose prototype DFB setup was developed for multiple applications at the Japan Proton Accelerator Research Complex (J-PARC). Being efficient, low-cost, and compact is key to achieving a cost-effective system that fulfills the performance specifications. It also reduces the production and maintenance costs of future DFB setups. A field-programmable gate array (FPGA)-based design with a digital signal processing (DSP) function uses an analog in-phase/quadrature-phase (I/Q) demodulator for RF-to-baseband signal conversion and an I/Q modulator to generate RF power. This arrangement compensates for RF phase fluctuations and amplitude modulations by employing a proportional and integral (PI) feedback controller. In addition, systematic errors are minimized by applying a hardware-error-compensation process. The system was utilized to conduct high-power tests on the interdigital H-mode drift-tube linac (IH-DTL) cavity of a muon linac for short RF pulses. The setup was also tested on a buncher cavity (Buncher-2) in the J-PARC linac, achieving efficient performance for longer RF pulses. The stability of the RF accelerating field in the IH-DTL was achieved at ± 0 . 25 % peak-to-peak (pp) in amplitude and ± 0.36 degree pp in phase. For the Buncher-2, the amplitude stability of ± 0 . 18 % pp and phase stability of ± 0.13 degree pp were obtained. Therefore, this DFB setup can be used to conduct high-power tests of RF cavities and klystrons. This study discusses the design aspects of a cost-effective DFB system and reports high-power measurements. |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">ELV059702559</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20240216093004.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">221219s2022 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1016/j.nima.2022.167700</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)ELV059702559</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(ELSEVIER)S0168-9002(22)00992-5</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rda</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">530</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">33.05</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">33.07</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">33.40</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Cicek, Ersin</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(orcid)0000-0001-7177-8053</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Compact and efficient radio frequency digital feedback control system for accelerator applications</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2022</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">The digital feedback (DFB) setup employed in a low-level radio frequency (LLRF) control system is crucial to ensure RF field stability in accelerating cavities, thus guaranteeing successful operation. To this end, a novel in-house and multi-purpose prototype DFB setup was developed for multiple applications at the Japan Proton Accelerator Research Complex (J-PARC). Being efficient, low-cost, and compact is key to achieving a cost-effective system that fulfills the performance specifications. It also reduces the production and maintenance costs of future DFB setups. A field-programmable gate array (FPGA)-based design with a digital signal processing (DSP) function uses an analog in-phase/quadrature-phase (I/Q) demodulator for RF-to-baseband signal conversion and an I/Q modulator to generate RF power. This arrangement compensates for RF phase fluctuations and amplitude modulations by employing a proportional and integral (PI) feedback controller. In addition, systematic errors are minimized by applying a hardware-error-compensation process. The system was utilized to conduct high-power tests on the interdigital H-mode drift-tube linac (IH-DTL) cavity of a muon linac for short RF pulses. The setup was also tested on a buncher cavity (Buncher-2) in the J-PARC linac, achieving efficient performance for longer RF pulses. The stability of the RF accelerating field in the IH-DTL was achieved at ± 0 . 25 % peak-to-peak (pp) in amplitude and ± 0.36 degree pp in phase. For the Buncher-2, the amplitude stability of ± 0 . 18 % pp and phase stability of ± 0.13 degree pp were obtained. Therefore, this DFB setup can be used to conduct high-power tests of RF cavities and klystrons. This study discusses the design aspects of a cost-effective DFB system and reports high-power measurements.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Low-level RF control system</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Digital feedback</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">FPGA</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Error correction</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Futatsukawa, Kenta</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(orcid)0000-0002-3110-0472</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Fang, Zhigao</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(orcid)0000-0002-0926-8770</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Fukui, Yuji</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(orcid)0000-0003-3009-2375</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Mizobata, Satoshi</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(orcid)0000-0002-4982-1171</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Otani, Masashi</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(orcid)0000-0001-6416-570X</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Kondo, Yasuhiro</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(orcid)0000-0001-7697-9225</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Morishita, Takatoshi</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(orcid)0000-0003-0720-0606</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Nakazawa, Yuga</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(orcid)0000-0003-4671-1345</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Sato, Yoshikatsu</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(orcid)0000-0001-8777-7813</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Nuclear instruments & methods in physics research / A</subfield><subfield code="d">Amsterdam : North-Holland Publ. 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