Email from Roger:

Date: Thu, 07 Oct 2004 22:57:30 -0400
From: Roger Carlini 
To: Juliette Mammei 
Cc: Jim Birchall , Klaus Grimm ,
     Mark Pitt , Neven Simicevic ,
     Greg Smith , Allena Opper ,
     Tony Forest , Norman Morgan ,
     Mike Finn , David Armstrong ,
     Yongguang Liang , Shelley Page ,
     Dave Mack , Richard Jones 
Subject: Re: Last fling with the 10-8-22 Boston collimator

Hi Juliette:

I would venture to bet that if the "goatee" is just the result of using 
Willie's field map then you should be able to 
"tweak" the magnet current and/or detector location along Z and make it go 
away - getting back to pretty much what you 
were seeing. Unless there is some other serious differences between the the 
two field models! If possible we should tune 
for a "goatee" free image when designing the detectors and collimator.

Best Regards

Roger

Juliette Mammei wrote:
> Hello everyone,
> 
> I have placed a plot of the simulation using Jim's geometry and event 
> generator files run on his machine (black) and my machine (red), but 
> this time using Willie's field map.  I think it matches fairly closely, 
> meaning I believe that explains why I wasn't seeing the goatee before.  
> I will be recalculating the rates with the correct field map and posting 
> them as I go.
> Talk to you all later,
> 
> Juliette
>