| Paper | Title | Page |
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TUP14 |
Transverse Emittance Measurement in Injector of RAON | |
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| It is important to measure the transverse emittance, a beam characteristic for beam dynamics calculation. There are several methods for measuring transverse emittance. The emittance is calculated from the phase space distribution of the beam measured by Allison scanner. Quadrupole scan with wire scanner or multi wire scanner for RAON injector were also performed to compare with these data. RAON injector consists of ECR-IS, LEBT, RFQ, MEBT. Various diagnostic devices such as 8 Wire Scanners and 1 Allison Scanner were installed in beam transport line. Each diagnostic device was driven by PLC and the current was measured with microTCA-based DAQ system. EPICS was used to control the diagnostic system, and each device was driven and measured according to the sequencer module. In this paper, the measurement result of each diagnostic device and result of the emittance measurement on Ar-40 beam are presented. | ||
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WEP11 |
Beam Based Calibration of Button Type Beam Position Monitor at MEBT of RAON | |
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| The RAON(Rare-isotope Accelerator complex for ON-line experiments) is an accelerator for heavy ions, such as uranium, oxygen and argon. 60 button beam position monitors was fabricated for the SCL3 that accelerate and deliver the beam from 0.5 MeV/u to 18.5 MeV/u in a uranium case. The beam has bunch structure after the RFQ at 0.5 MeV/u, the lowest energy measurable by BPM. Developed electronics measure positions using IQ method for 1st, 2nd and 3rd harmonic frequencies of 81.25 MHz. Calibration factors of BPM for the three frequency harmonic components were obtained taking into account the frequency dependence of the electronics at wire test bench. To measure the correction factor based on the acceleration beam, a movable stage equipped with a micrometer was prepared on a one-dimensional plane. We present the beam-based calibration test results of button-type BPM for low-beta and heavy-ion beams at MEBT of RAON. | ||
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