Double-Wire Vibrating Wire Monitor (DW-VWM) for Beam Halo Monitoring in High-intensity Accelerators

Kwak, Donghyun; Arutunian, Suren; Chung, Moses; Harutyunyan, Gevorg; Lazareva, E.; Margaryan, Ashot

doi:10.18429/JACoW-IBIC2019-TUPP028

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RIS citation export for TUPP028: Double-Wire Vibrating Wire Monitor (DW-VWM) for Beam Halo Monitoring in High-intensity Accelerators

TY  - CONF
AU  - Kwak, D.H.
AU  - Arutunian, S.G.
AU  - Chung, M.
AU  - Harutyunyan, G.S.
AU  - Lazareva, E.G.
AU  - Margaryan, A.V.
ED  - Schaa, Volker RW
ED  - Jansson, Andreas
ED  - Shea, Thomas
ED  - Olander, Johan
TI  - Double-Wire Vibrating Wire Monitor (DW-VWM) for Beam Halo Monitoring in High-intensity Accelerators
J2  - Proc. of IBIC2019, Malmö, Sweden, 08-12 September 2019
CY  - Malmö, Sweden
T2  - International Beam Instrumentation Conferenc
T3  - 8
LA  - english
AB  - Double-Wire Vibrating Wire Monitor (DW-VWM) has been designed and manufactured to monitor the beam halo in high-intensity accelerators. Compared with the previous VWM, we increase the ratio between the aperture and wire length by using strong 5 mm x 5 mm Samarium-Cobalt magnets. In addition, we install two stainless steel vibrating wires on the same frame. The first wire is placed in the beam halo region for measurements, and the second wire, which is separated from the beam by a screen, is used to subtract background signal caused by ambient temperature shifts. The new electronics of the DW-VWM consist of two main boards: auto-generation unit which is placed near the VWM, and the frequency measurement unit which is placed in the control room (100 m distance operation was tested). Typical frequency of the VWM (at start tension about 0.7 of tensile strength) is about 8000 Hz. The temperature sensitivity is about 110 Hz/K with 0.2 mK Hz resolution. The VWM was tested in vacuum tank and the frequency corresponding to each vacuum level was analyzed. The process of oscillation excitation at different levels of vacuum was also investigated.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 373
EP  - 376
KW  - vacuum
KW  - experiment
KW  - laser
KW  - electron
KW  - operation
DA  - 2019/11
PY  - 2019
SN  - 2673-5350
SN  - 978-3-95450-204-2
DO  - doi:10.18429/JACoW-IBIC2019-TUPP028
UR  - http://jacow.org/ibic2019/papers/tupp028.pdf
ER  -