IBIC2015 - List of Authors (Forck, P.)

Paper	Title	Page
MOPB037	Development of High Precision Capacitive Beam Phase Probe for KHIMA Project	121
	J.G. Hwang, S.Y. Noh KIRAMS/KHIMA, Seoul, Republic of Korea P. Forck GSI, Darmstadt, Germany T.K. Yang KIRAMS, Seoul, Republic of Korea
	In the medium energy beam transport (MEBT) line of KHIMA project, a high precision beam phase probe monitor is required for a precise tuning of RF phase and amplitude of RFQ and IH-DTL. It is also used for measuring a kinetic energy of ion beam by time-of-flight (TOF) method using two phase probes. In this paper, we show the electromagnetic design of the high precision phase probe to satisfy the phase resolution of 1 deg (@ 200 MHz), the test result with a wire test bench to estimate a signal strength and phase accuracy, the design of the 0.2 ~ 2.0 GHz broad-band electronics for amplifying the signal strength, and the results of beam energy and RF frequency measurement using a proton beam from the cyclotron in KIRAMS.
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TUPB010	Digital Processing of Pick-up Signals for Position and Tune Determination	321
	R. Singh, P. Forck, P. Kowina, A. Reiter GSI, Darmstadt, Germany
	With the advent of fast high resolution Analog to Digital Converters (ADCs) and Field Programmable Gate Arrays (FPGAs), 'all digital systems' for pick-up data processing to calculate position and tune have become commonplace. The flexibility of these digital systems is very advantageous since it permits the change of position determination algorithms based on beam conditions, accelerator operation modes and measurement requirements. This contribution compares the frequently used position determination algorithms in terms of measurement variance, bias, robustness and computational complexity using simple analytical model. The analytical model is compared to the beam data to evaluate its applicability and conclusions on the optimum position estimator are derived.
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TUPB041	Development of Capacitive Linear-Cut Beam Position Monitor for Heavy-Ion Synchrotron of KHIMA Project	405
	J.G. Hwang, S.Y. Noh KIRAMS/KHIMA, Seoul, Republic of Korea P. Forck GSI, Darmstadt, Germany C. Kim PAL, Pohang, Kyungbuk, Republic of Korea T.K. Yang KIRAMS, Seoul, Republic of Korea
	particles for the carbon beams and ~ ∼ 2.07 × 10^zEhNZeHn for the proton beams, the linear-cut beam position monitor is adopted to satisfy the position resolution of 100 μm and accuracy of 200 μm with the linearity within the wide range. In this paper, we show the electromagnetic design of the electrode and surroundings to satisfy the resolution of 100 μm, the criteria for mechanical aspect to satisfy the position accuracy of 200 μm, the measurement results of position accuracy and calibration by using wire test-bench, and the beam-test results with long ( ∼ 1.6 μs) electron beam in pohang accelerator laboratory (PAL).
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Paper

Title

Page

Development of High Precision Capacitive Beam Phase Probe for KHIMA Project

121

J.G. Hwang, S.Y. Noh
KIRAMS/KHIMA, Seoul, Republic of Korea
P. Forck
GSI, Darmstadt, Germany
T.K. Yang
KIRAMS, Seoul, Republic of Korea

In the medium energy beam transport (MEBT) line of KHIMA project, a high precision beam phase probe monitor is required for a precise tuning of RF phase and amplitude of RFQ and IH-DTL. It is also used for measuring a kinetic energy of ion beam by time-of-flight (TOF) method using two phase probes. In this paper, we show the electromagnetic design of the high precision phase probe to satisfy the phase resolution of 1 deg (@ 200 MHz), the test result with a wire test bench to estimate a signal strength and phase accuracy, the design of the 0.2 ~ 2.0 GHz broad-band electronics for amplifying the signal strength, and the results of beam energy and RF frequency measurement using a proton beam from the cyclotron in KIRAMS.

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)

TUPB010

Digital Processing of Pick-up Signals for Position and Tune Determination

321

R. Singh, P. Forck, P. Kowina, A. Reiter
GSI, Darmstadt, Germany

With the advent of fast high resolution Analog to Digital Converters (ADCs) and Field Programmable Gate Arrays (FPGAs), 'all digital systems' for pick-up data processing to calculate position and tune have become commonplace. The flexibility of these digital systems is very advantageous since it permits the change of position determination algorithms based on beam conditions, accelerator operation modes and measurement requirements. This contribution compares the frequently used position determination algorithms in terms of measurement variance, bias, robustness and computational complexity using simple analytical model. The analytical model is compared to the beam data to evaluate its applicability and conclusions on the optimum position estimator are derived.

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TUPB041

Development of Capacitive Linear-Cut Beam Position Monitor for Heavy-Ion Synchrotron of KHIMA Project

405

J.G. Hwang, S.Y. Noh
KIRAMS/KHIMA, Seoul, Republic of Korea
P. Forck
GSI, Darmstadt, Germany
C. Kim
PAL, Pohang, Kyungbuk, Republic of Korea
T.K. Yang
KIRAMS, Seoul, Republic of Korea

particles for the carbon beams and ~ ∼ 2.07 × 10^zEhNZeHn for the proton beams, the linear-cut beam position monitor is adopted to satisfy the position resolution of 100 μm and accuracy of 200 μm with the linearity within the wide range. In this paper, we show the electromagnetic design of the electrode and surroundings to satisfy the resolution of 100 μm, the criteria for mechanical aspect to satisfy the position accuracy of 200 μm, the measurement results of position accuracy and calibration by using wire test-bench, and the beam-test results with long ( ∼ 1.6 μs) electron beam in pohang accelerator laboratory (PAL).

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)