[Olympus] rates in TOFs

[Uwe Schneekloth]

Dear Alexander, 

Yes, I know that there is a potential conflict.

We should however start assembling the support. I suspect that this won't
as easy as we hope. 
It might be useful to install the complete shielding before the shutdown, 
in order to check how the background will change. 

Best regards,
Uwe

_____________________________________________________
|                                        
| Dr. Uwe Schneekloth   
| OLYMPUS                                           
| Deutsches Elektronensynchrotron  
| Notkestrasse 85                                     
| D-22603 Hamburg/Germany              
| Tel: +49-40-8998 2007  Fax: +49-40-8998 3092 
| email: uwe.schneekloth at desy.de                          
_____________________________________________________

On 25.08.2011, at 08:59, Alexander Kiselev wrote:

>  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.