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Hello Takashi,

If the geometry corresponds to the on of the engineers, which I would think it does, then the photon beam would go at 30.5 mrad, which was measured using he full chicane setup with Gemc. I wouldn't worry about that 0.5 mrad difference. 

We never really studied the beam-misteering tolerance of our setup. In other words, by how many mrad can the beam angle be off, or how many mm in x, and still give us acceptable run conditions. This would be a worthwhile study to give use some idea before we run.

Best,
	Maurik


On Nov 13, 2012, at 5:50 PM, "Maruyama, Takashi" <[log in to unmask]> wrote:

> If I send photons and beam-energy electrons at 30 mrad from the target, photons would go through the photon hole and electrons the beam notch in the Ecal vac chamber. Is this correct?
> 
> -----Original Message-----
> From: [log in to unmask] [mailto:[log in to unmask]] On Behalf Of Sho Uemura
> Sent: Tuesday, November 13, 2012 2:26 PM
> To: hps-software
> Subject: new detector geometry for proposal
> 
> HPS-Proposal2014-v2 is the detector we're using. I've just corrected the ECal position and added the electron flange.
> 
> You should update hps-detectors from CVS and rerun SLIC if you have MC data from the following detectors:
> 
> HPS-Prime-Nominal-v2
> HPS-Proposal2014-v1
> HPS-Proposal2014-v2
> 
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