[Ifeffit] current-amp recommendation

Carlo Segre segre at iit.edu
Tue Nov 14 15:32:41 CST 2017

HI Matthew:

One possibility is the Caen quad amplifier that they made for BPMs.



On Tue, 14 Nov 2017, Matthew Marcus wrote:

> I've gotten involved with a project in which stabilization of the position of 
> a monochromatic, soft X-ray beam is needed.  The
> offending frequencies seem to be vibration frequencies like 57 and 116Hz.  We 
> have in mind to use a thin Au film with a gap in the
> middle, measuring the drain current from the films, much as people normally 
> use the jaws of slits.  Now, I'd like to find a couple
> of current amplifiers which are small enough so that they can be connected 
> with very short cables to the BNC connectors on the
> air-side of this detector, and which would have decent frequency response and 
> low noise with inputs of the order of 0.1-1nA.
> Although this topic is outside the realm of XAFS analysis with IFEFFIT, I 
> figure that people on this group might have some
> good experience.
> 	mam
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Carlo U. Segre -- Duchossois Leadership Professor of Physics
Interim Chair, Department of Chemistry
Director, Center for Synchrotron Radiation Research and Instrumentation
Illinois Institute of Technology
Voice: 312.567.3498            Fax: 312.567.3494
segre at iit.edu   http://phys.iit.edu/~segre   segre at debian.org

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