Current status of Turkish accelerator and radiation laboratory in Ankara: the TARLA facility

Aksoy, Avni; Karslı, Özlem; Aydın, Ayhan; Kaya, Caglar; Ketenoglu, Bora; Ketenoğlu, Didem; Yavas, O.

doi:10.1139/cjp-2017-0750

Cited by 13 publications

(12 citation statements)

References 4 publications

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“…Therefore, design and production stages are key to achieve these requirements. In this study, optimization methods are applied on the following basic formulas to find geometric features of the BPMs for Turkish Accelerator and Radiation Laboratory in Ankara (TARLA) [8].…”

Section: Bpm Antenna Designmentioning

confidence: 99%

Rf Antenna Design for Button-Type Beam Position Monitors Using Bio-Inspired Optimization Methods

Aydın

Bostancı

2020

Commun.Fac.Sci.Univ.Ank.Series A2-A3: Phys.Sci. and Eng.

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Accelerator based facilities are in a leading position for crafting many scientific and technical innovations for a wide range of application from aviation to medicine. Beam Position Monitors (BPMs) are critical diagnostics tools for such facilities. This study presents bio-inspired methods known as Particle Swarm Optimization and Evolutionary Algorithms in order to design RF antennas for button-type BPMs. Our results show that the antenna parameters obtained using this multiple objective approaches present suitable SNR and linearity values for signal processing. It is found that using an antenna radius of 5.5 mm and beam-pipe radius of 17.5 mm, we can obtain SNR values around 40 dB which can be electronically processed.

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Section: Bpm Antenna Designmentioning

confidence: 99%

Rf Antenna Design for Button-Type Beam Position Monitors Using Bio-Inspired Optimization Methods

Aydın

Bostancı

2020

Commun.Fac.Sci.Univ.Ank.Series A2-A3: Phys.Sci. and Eng.

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“…With beam dynamics simulation it was found that five solenoid magnets would be sufficient for transporting the beam through the injector [2,3]. The axis of the beamline just after gun has a bend about 15…”

Section: Tarla Injectormentioning

confidence: 99%

“…The Turkish Accelerator and Radiation Laboratory in Ankara (TARLA), which has had continuous support from the Turkish Ministry of Development (TMD) since its conception in 2006, is designed as a multi-experiment facility providing a variety of accelerator-based radiation sources for users from various fields [1,2]. Based on a state-of-the-art superconductor technology, the current scope of the TARLA accelerator is designed to drive two free-electron laser (FEL) beamlines covering the range of 3-250 µ m and one Bremsstrahlung line providing gamma radiation in the range of 1-30 MeV.…”

Section: Introductionmentioning

confidence: 99%

Design of Turkish Accelerator and Radiation Laboratory in Ankara (TARLA) facility injector magnets

Aksoy¹

2017

Turk J Phys

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Abstract:The installation of a high current thermionic gun-based injector capable to accelerate a maximum 1.5 mA electron beam at 250 keV and continuous wave (CW) for various bunch repetition rates has been continuing at the Turkish Accelerator and Radiation Laboratory in Ankara (TARLA) since 2014. The injector, which is based on totally normal conducting technology, will mainly consist of a thermionic DC electron gun, two stage bunch compressor cavities operating at 260 MHz and 1.3 GHz, one dipole magnet, five solenoid lenses and an additional one dipole magnet that is going to be used as spectrometer, and several steerer magnets. In this paper we discuss the design criteria of all magnets of the TARLA injector and present design results.

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“…Due to this compression process, these cavities are also called as bunch compressors. When the installation of the injector is completed, the TARLA injector line will deliver electrons with bunch length of ∼0.4-6 ps at the operation frequency of 1.3 GHz [4,5].…”

Section: Introductionmentioning

confidence: 99%

Long term stability of 1.3 GHz high power RF amplifier

Karslı¹,

Colak²

2021

Turk J Elec Eng & Comp Sci

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Turkish Accelerator and Radiation LAboratory (TARLA) is an accelerator based oscillator mode free electron laser (FEL) facility under construction. The acceleration beam-line includes a fundamental buncher (FB) in order to confine the electron beam into a compressed bunch. In this study, we demonstrate the commissioning tests of 500 W RF amplifier powering FB and present the phase stability dependence of the pressure and temperature of the water cooling line under long time run conditions. As the disturbing effects break down the synchronization between the particle and RF power during acceleration, the reasons disquieting the stability of the RF amplifier are investigated. One reason which disturbs the stability is the variation in the phase of the output power. Phase variation of the output power of the RF amplifier measured as ∼ 10 deg/ • C in average initially, which is beyond permitted variation levels by the controller electronics, namely the Low Level RF system (LLRF), is decreased to less than ∼ 0.45 deg/ • C by incorporating a phase shifter. In addition, this phase variation reduction is accompanied with a reflected power at the output of the RF amplifier decline from 4.3 W (36.33 dBm) down to 3 mW (4.7 dBm) by utilizing a circulator, which is also important and desirable in terms of protection of the electronics in the long term run. As ensuring phase stability in the output power is very important, this work may serve as a guide since the documentation regarding the output power dependence of the water cooling line for long term run is very limited.

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Current status of Turkish accelerator and radiation laboratory in Ankara: the TARLA facility

Cited by 13 publications

References 4 publications

Rf Antenna Design for Button-Type Beam Position Monitors Using Bio-Inspired Optimization Methods

Rf Antenna Design for Button-Type Beam Position Monitors Using Bio-Inspired Optimization Methods

Design of Turkish Accelerator and Radiation Laboratory in Ankara (TARLA) facility injector magnets

Long term stability of 1.3 GHz high power RF amplifier

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