[Olympus] rates in TOFs

[Alexander Kiselev]

  Dear Uwe,

> Presently, there is indeed no shielding upstream of the detector. We were
> planning to install a lead wall just upstream of the detector. This was not done
> because the shielding would have be in conflict with the survey and there was
> no time between the final survey and the startup. 
> The shielding could be installed during the service week in October or 
> more likely during the December/January shutdown. 

  if we plan to repeat some of the survey measurements during winter 
shutdown, it would make perfect sense to install shielding only after 
that, so in January.

  Regards,
    Alexander.