Test of front-end circuit for suppressing common-mode component of main ring damper

Technical Report · Sun Jan 01 00:00:00 EST 1995

DOI:https://doi.org/10.2172/15017143· OSTI ID:15017143

Ma, Hengjie

To improve the efficiency of a transversal damper, the common-mode components in the beam signal due to any off-center closed orbit must be suppressed as much as possible. In the present Super Damper the common-mode suppression is accomplished by using a feedback to adjust the dc offset of the front-end integrator. For the proposed main ring damping system, a new front-end circuit using balanced cross-feed forward and feedback has been developed to improve the common-mode rejection and adaptability to changes in the closed-orbit of the front-end. The circuit had been proved on a bench test. The test done on July 30 was to evaluate its effectiveness on the real beam signals.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 15017143
• Report Number(s): FERMILAB-EXP-187; TRN: US200621%%331
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DAMPING
EFFICIENCY
FEEDBACK
Instrumentation