Paper |
Title |
Page |
PS18 |
Planned X-Ray Imaging of the Electron Beam at the SPRING-8 Diagnostics Beamline BL38B2
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145 |
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- S. Takano, M. Masaki, H. Ohkuma, S. Sasaki, M. Shoji, K. Tamura
SPring, Japan Synchrotron Radiation Research Institute, SPring-8, Hyogo, Japan
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X-ray imaging observation of the electron beam is
planned at the SPring-8 storage ring diagnostics beamline
BL38B2 to evaluate small vertical emittance. The
resolution target is 1 micron of electron beam size (1s).
The synchrotron radiation from a dipole magnet source
will be imaged by a single phase zone plate.
Monochromatic X-ray with energy of 8keV will be
selected by a double crystal monochromator. The
magnification factor of the zoneplate is 0.27, and an X-ray
zooming tube will be used as a detector to compensate
for demagnification.
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PM02 |
Signal Processor for Spring8 Linac BPM
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162 |
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- K. Yanagida, T. Asak, H. Dewa, H. Hanaki, T. Hori, T. Kobayashi, A. Mizuno, S. Sasaki, S. Suzuki, T. Takashima, T. Taniushi, H. Tomizawa
SRRI, Japan Synchrotron Radiation Research Institute, Mikazuki, Hyogo, Japan
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A signal processor of the single shot BPM system consists of a
narrow-band BPF unit, a detector unit, a P/H circuit, an S/H IC and a
16-bit ADC. The BPF unit extracts a pure 2856MHz RF signal component from
a BPM and makes the pulse width longer than 100ns. The detector unit that
includes a demodulating logarithmic amplifier is used to detect an S-band
RF amplitude. A wide dynamic range of beam current has been achieved;
0.01 ~ 3.5nC for below 100ns input pulse width, or 0.06 ~ 20mA for above
100ns input pulse width. The maximum acquisition rate with a VME system
has been achieved up to 1kHz.
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