Nov 13 – 15, 2024
Hotel Lahan, Pohang, Korea
Asia/Seoul timezone

Design of an X-ray Ionization Beam Profile Monitor for Korea-4GSR

Nov 14, 2024, 2:55 PM
15m
5F Grand Hall

5F Grand Hall

Oral ICABU WG2. Beam Physics, Diagnostics & Novel Techniques ICABU WG2

Speaker

Woojin Song (POSTECH)

Description

A photon beam generated by the Insertion Device (ID) of a synchrotron light source can be contaminated by radiation from upstream and downstream bending magnets, leading to position measurement errors in blade-type monitors. The operation of the Korea-4GSR, which has extremely low emittance, is particularly sensitive to photon beam position variations, necessitating more accurate position measurements. To robustly measure the position and simultaneously obtain the profile of a photon beam in a non-destructive manner, we are developing an ionization profile monitor.
We designed a noble gas environment to ensure adequate signal strength and incorporated a defocusing electrode structure to fully utilize the relatively large active area of the readout. Since magnification in the defocusing field depends on the vertical position, we proposed a calibration method to correct the non-linearity, which we then verified through particle tracking simulation.

Contribution track ICABU WG2. Beam Physics, Diagnostics & Novel Techniques
Paper submission Plan No
Best Presentation Yes

Primary author

Woojin Song (POSTECH)

Co-authors

Garam HAHN (Pohang Accelerator Laboratory, POSTECH) Hyojung Hyun (Pohang Accelerator Laboratory) Dr Kim Jehan (Pohang Accelerator Laboratory) Dr Lim Jae-Hong (Pohang Accelerator Laboratory) Prof. Moses Chung (POSTECH) Dr Park Youngsung (Pohang Accelerator Laboratory) Seo Min-Ho (Pohang Accelerator Laboratory) Seonghan Kim (Pohang Accelerator Laboratory) Seungcheol Lee (Pohang Accelerator Laboratory) Sunmin Hwang

Presentation materials

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