Re: FMB LoCuM-4 current monitor

[juraj krempasky <juraj.krempasky@psi.ch>]

Gillingham, IJ (Ian) wrote:

> Hello,
>
> Is anyone aware of any EPICS support for the FMB LoCuM-4 low current
> monitor.  We intend to use them with PBPMs.  Thought I would ask before
> re-inventing the proverbial wheel.
>
> Regards,
>
> Ian
>
>
> 	Ian Gillingham
> 	Senior Electronic Systems Engineer
> 	Diamond Light Source Ltd.
> 	Rutherford Appleton Laboratory
> 	Chilton
> 	Didcot
> 	Oxfordshire OX11 0QX
> 	 
> 	Tel: +44 (0)1235 778129
> 	Fax: +44 (0)1235 778468
> 	Email: ian.gillingham@diamond.ac.uk
>
> 	 
>
>  
Hi,

We are using LoCuM-4 for PBPMs at the SLS. Of course, I can provide you 
the EPICS templates. The 0-10V output of the LoCuM-4 we digitize with 
16-bit Hytec8401 ADCs sitting in Hytec8002 carrier boards.

Actually, there are 3 templates used for photon monitors (PBPMs):
* 1st is used to read/convert the signals according to the auto-range 
LoCuM signal.
* 2nd is used to calculate the PBPM asymmetries and positions, actually 
there are 2 types used depending on the PBPM type
* 3rd is used for studying the dynamics of the photon beam in frequency 
domain by means the buffering capabilities of the Hytec8401 ADC.

Juraj



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