Author: Unel, G.
Paper Title Page
TUP22
 Linear Approach to Space Charge Calculations Proton Testbeam at KAHVELab (PTAK)  
 
  • G. Unel
    UCI, Irvine, California, USA
  • A. Adiguzel, S. Esen
    Istanbul University, Istanbul, Turkey
  • H. Cetinkaya
    Dumlupinar University, Faculty of Science and Arts, Kutahya, Turkey
  • S. Ogur, S. Ogur
    CERN, Meyrin, Switzerland
  • E.V. Ozcan
    Bogazici University, Bebek / Istanbul, Turkey
  
  Funding: This study is supported by The Scientific and Technological Research Council of Turkey (TUBITAK), Project No: 119M774
In Kandilli Detector, Accelerator, and Instrumentation Laboratory, a proton accelerator system is produced using local resources consists of 2 types of ion sources, a low energy beam transfer line (LEBT)and a 1-meter-long RFQ that will operate at 800 MHz. A bespoke Python program calculated the space charge effect created by internal interactions of the beam along the line before entering the RFQ. The results were validated with CERN’s TRAVEL program. The growth of the beam with a 1.4 mA current value in the transverse axis due to the effect of space charge has been calculated with a maximum margin of error of 4% for different current and frequency values. Studies using different emittance calculation methods on emittance growth due to space charge dominance continues to be developed. In addition, studies on comparing new methods’ findings with outputs of A Space Charge Tracking Algorithm (ASTRA) and RF-Track Programs are ongoing and aim to finalize by the end of 2023. 		 
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WEP18
 Diagnostic Station of Proton Beam at KAHVELab (PTAK)  
 
  • D. Halis, M. Serin
    YTU, Istanbul, Turkey
  • A. Adiguzel, S. Esen, S. Oz
    Istanbul University, Istanbul, Turkey
  • H. Cetinkaya
    Dumlupinar University, Faculty of Science and Arts, Kutahya, Turkey
  • T.B. Ilhan
    Bogaziçi University, Kandilli Accelerator, Istanbul, Turkey
  • S. Ogur
    Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
  • E.V. Ozcan
    Bogazici University, Bebek / Istanbul, Turkey
  • G. Unel
    UCI, Irvine, California, USA
  
  Funding: This study is supported by Istanbul University Scientific Research Commission Project ID 33250 and TUBITAK Project no : 119M774.
A testbeam using a Radio Frequency Quadrupole (RFQ) operating at 800 MHz, to accelerate a 1.5mA proton beam to 2MeV energy has been designed, manufactured and is currently being commissioned at KAHVELab, Istanbul. The beam from the microwave discharge ion source (IS) must be matched to the RFQ via an optimized Low Energy Beam Transport (LEBT) line which also contains an integrated measurement station, called MBOX. The MBOX is designed to measure the beam current and profile, as well as the beam emittance, to ensure an accurate match between IS and RFQ. It includes a number of diagnostic tools: a Faraday Cup, a scintillator screen, and a pepper pot plate (PPP). During the commissioning, beam images were taken at different points on the beamline. Other measurements were also taken with different screen materials and different plates in the MBOX box. The analysis software was also developed and tested for the PP photo analysis. This contribution will present the proton beamline components, MBOX diagnostic tools and will focus on the measurements, especially on the PPP emittance analysis. 		 
poster icon Poster WEP18 [12.135 MB]  
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WEP43 Control Systems of DC Accelerators at KAHVELab 512
 
  • T.B. Ilhan, A. Caglar, D. Halis
    YTU, Istanbul, Turkey
  • A. Adiguzel, S. Oz
    Istanbul University, Istanbul, Turkey
  • H. Cetinkaya
    Dumlupinar University, Faculty of Science and Arts, Kutahya, Turkey
  • E. Elibollar, M.F. Er, A. Inanc, E.V. Ozcan
    Bogazici University, Bebek / Istanbul, Turkey
  • U. Kaya
    Istinye University, Institute of Sciences, Istanbul, Turkey
  • A. Ozbey
    IUC, Istanbul, Turkey
  • G. Türemen
    TENMAK-NUKEN, Ankara, Turkey
  • G. Unel
    UCI, Irvine, California, USA
  
  KAHVE Laboratory has two functional particle sources: thermal electrons and ionized hydrogen. Each of these are followed by DC acceleration sections, for obtaining an electron beam to accelerate electrons MeV energy level and for providing protons to the radio frequency quadrupole accelerator which are being built. So far both systems have keV energy levels. Both systems employ LabVIEW based GUIs to interact with the user and to control and monitor the DC power supplies. The vacuum gauges, turbomolecular pumps, stepper motors and high voltage power supplies are all controlled with PLCs. The equipment under high voltage, are monitored and controlled via Arduino based wifi and bluetooth wireless communication protocols. The proton beamline has additional devices for beam diagnostics which are being commissioned like pepper pot plate, scintillator screen and faraday cup. Both systems are being standardize before MeV energy level for generalize to national labs which are working on detectors and accelerators. We believe such a setup could be a low budget control and readout example for modern small experiments and educational projects.  
poster icon Poster WEP43 [14.645 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2022-WEP43  
About • Received ※ 11 October 2022 — Revised ※ 18 October 2022 — Accepted ※ 25 October 2022 — Issue date ※ 07 November 2022
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