Speaker
Description
The Taiwan Photon Source (TPS) streak camera system has been used for longitudinal beam studies since the early commissioning stage. This paper first presents a representative high-current instability observation associated with the CU15 insertion device taper and then recent measurements of bunch length and synchronous phase under operation with the superconducting RF (SRF) + passive 3rd harmonic cavity (HC), here abbreviated as SRF HC. The CU15 case shows different instability behaviors along the fill pattern in streak images. The SRF HC measurements provide bunch-by-bunch information under different fill patterns and SRF HC settings for comparison of bunch lengthening and phase shift. Under operation with the passive SRF HC, a phase drift of about 35 ps is observed along the bunch train, consistent with transient beam loading under quasi-uniform filling. These measurements show that the streak camera is useful for longitudinal diagnostics and machine studies at TPS.
| In which format do you inted to submit your paper? | LaTeX |
|---|---|
| Preprint marking on your proceeding paper | I wish my paper to be marked as preprint. |