IPAC2013 - List of Authors (Luo, Q.)

Paper	Title	Page
MOPME040	Cavity-based Multi-parameter Beam Diagnostics at HLS	559
	Q. Luo, B.G. Sun USTC/NSRL, Hefei, Anhui, People's Republic of China
	Funding: Natural Science Foundation of China (11005106) Recent developments of the fourth generation light sources needs precious control of beam parameters, such as beam position, transverse emittance, beam density, bunch length, etc.. Non-destructive on-line beam diagnostic methods are then required. As an example, the cavity beam multi-parameter monitor system designed for the HLS photocathode RF electron gun consists of a beam position monitor, a beam quadrupole moment monitor and a beam density and bunch length monitor. The cavity beam position monitor uses a re-entrant position cavity tuned to TM110 mode as position cavity and cut-through waveguides to suppress the monopole signal. Beam quadrupole moment monitor system consists of a square pill-box quadrupole moment cavity, a cylindrical pill-box reference cavity and a waveguide coupling network. TM0n0 modes of cavity can be used to work out beam density and bunch length simultaneously. To simplify the design and suppress the whole system here, we use the reference cavity of beam position monitor as beam density and bunch length signal pick-up.

THPME013	MAGNET SUBSYSTEM OF HLS II	3537
	Q. Luo, N. Chen, G. Feng, N. Hu USTC/NSRL, Hefei, Anhui, People's Republic of China
	Funding: Work supported by Natural Science Foundation of China 11005106 To improve the performance of the Hefei Light Source (HLS), in particular to get higher brilliance synchrotron radiation and increase the number of straight section insertion devices, NSRL is now upgrading HLS to HLS II. Most of the magnets had to be replaced in this project. To measure the magnets, set of the magnetic measurement equipment in NSRL are also re-built. New magnets are sample measured, the discreteness and uniformity of integrated magnetic field all meet the requirements. Piecewise fitting and electron tracking of bending magnets for injector and beam transport line were performed and the results showed that the electron trajectory fitted the physical design well.

Paper

Title

Page

Cavity-based Multi-parameter Beam Diagnostics at HLS

559

Q. Luo, B.G. Sun
USTC/NSRL, Hefei, Anhui, People's Republic of China

Funding: Natural Science Foundation of China (11005106)
Recent developments of the fourth generation light sources needs precious control of beam parameters, such as beam position, transverse emittance, beam density, bunch length, etc.. Non-destructive on-line beam diagnostic methods are then required. As an example, the cavity beam multi-parameter monitor system designed for the HLS photocathode RF electron gun consists of a beam position monitor, a beam quadrupole moment monitor and a beam density and bunch length monitor. The cavity beam position monitor uses a re-entrant position cavity tuned to TM110 mode as position cavity and cut-through waveguides to suppress the monopole signal. Beam quadrupole moment monitor system consists of a square pill-box quadrupole moment cavity, a cylindrical pill-box reference cavity and a waveguide coupling network. TM0n0 modes of cavity can be used to work out beam density and bunch length simultaneously. To simplify the design and suppress the whole system here, we use the reference cavity of beam position monitor as beam density and bunch length signal pick-up.

THPME013

MAGNET SUBSYSTEM OF HLS II

3537

Q. Luo, N. Chen, G. Feng, N. Hu
USTC/NSRL, Hefei, Anhui, People's Republic of China

Funding: Work supported by Natural Science Foundation of China 11005106
To improve the performance of the Hefei Light Source (HLS), in particular to get higher brilliance synchrotron radiation and increase the number of straight section insertion devices, NSRL is now upgrading HLS to HLS II. Most of the magnets had to be replaced in this project. To measure the magnets, set of the magnetic measurement equipment in NSRL are also re-built. New magnets are sample measured, the discreteness and uniformity of integrated magnetic field all meet the requirements. Piecewise fitting and electron tracking of bending magnets for injector and beam transport line were performed and the results showed that the electron trajectory fitted the physical design well.