ILC Workshop on Potential Experiments (ILCX2021)

Power Incident on the ILC helical undulator vacuum chamber

27 Oct 2021, 21:30

30m

Room #2 (Zoom Meeting ID: 823 6921 2312)

Oral presentation using Zoom Session R: Machine - Sources R-1: Machine - Sources

Speaker

Khaled Alharbi (Hamburg University, DESY, KACST)

Description

In the international linear collider (ILC), a high-intense electron beam passes through a helical undulator to produce a multi-MeV circularly polarized photon beam before it is directed to the interaction point (IP). The photon beam hits a thin rotating target to produce electron positron pairs. A maximum active undulator length of 231 m is foreseen to be appropriate for the ILC 250 GeV center-of-mass energy. Since the photon produced by the undulator is created with an opening angle, some of these photons will strikes the superconducting undulator wall. Therefore, photon masks must be placed along the undulator line to keep the power deposited into the undulator walls at an acceptable level (1 W/m). This talk will discuss the power deposited into the undulator walls. Masks inserted in the undualor line are discussed assuming ideal and realistic undulator fields; as material copper or tungsten are considered in detail.

Presentation materials

ILCX21_01_KAlharbi.pptx