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Hello All,
 Can someone from the ECal comment on what the geometry should be?
HPS-Proposal2014-v9-2pt2 has a symmetric layout of the top and bottom beamgap of 20mm

        <detector id="13" name="Ecal" type="HPSEcal3" insideTrackingVolume="false" readout="EcalHits" vis="ECALVis">
            <comment>The crystal ECal</comment>
            <material name="LeadTungstate" />
            <dimensions x1="ecal_front" y1="ecal_front" x2="ecal_back" y2="ecal_back" z="ecal_z" />
            <layout beamgap="20.0*mm" nx="46" ny="5" dface="ecal_dface">
                <remove ixmin="-10" ixmax="-2" iymin="-1" iymax="1" />
                <top dx="ecal_dface*tan(beam_angle)" dy="0." dz="0."/>
                <bottom dx="ecal_dface*tan(beam_angle)" dy="0." dz="0."/>
            </layout>
        </detector>

Whereas HPS-ECalCommissioning-v2 has 20mm on the bottom and 23mm on the top

        <detector id="13" name="Ecal" type="HPSEcal3" insideTrackingVolume="false" readout="EcalHits" vis="ECALVis">
            <comment>The crystal ECal</comment>
            <material name="LeadTungstate" />
            <dimensions x1="ecal_front" y1="ecal_front" x2="ecal_back" y2="ecal_back" z="ecal_z" />
            <layout beamgapBottom="20.0*mm" beamgapTop="23.0*mm" nx="46" ny="5" dface="ecal_dface">
                <remove ixmin="-10" ixmax="-2" iymin="-1" iymax="1" />
                <top dx="ecal_dface*tan(beam_angle)" dy="0." dz="0."/>
                <bottom dx="ecal_dface*tan(beam_angle)" dy="0." dz="0."/>
            </layout>
        </detector>


Thanks,
Norman

From: Hansson Adrian, Per Ola 
Sent: Thursday, March 05, 2015 4:04 PM
To: Graf, Norman A.
Cc: hps-software
Subject: Re: New geometry release

Hi Norman,

I don't know. The ECal in v9 is the same as v8. I didn't touch anything else than the tracker.

/Pelle



On Mar 5, 2015, at 3:57 PM, Graf, Norman A. <[log in to unmask]> wrote:


Hello Pelle,
I note that the ECal description has a symmetric beam gap for top and bottom. Was the asymmetry that we had in December fixed?
Norman
 
From: [log in to unmask] [mailto:[log in to unmask]] On Behalf Of Hansson Adrian, Per Ola
Sent: Thursday, March 05, 2015 10:34 AM
To: hps-software
Subject: New geometry release
 
Hi All,
 
I've created a new geometry release v9: HPS-Proposal2014-v9-2pt2
 
If is a straight copy of v8 except:  
 
* It has the new tracker geometry that we need for the counting house (opening angle can be adjusted easily).
 
* I removed the "field definition" planes.
 
* I removed the "recoil" sensors
 
The new tracker geometry has been tested extensively on particle gun type events and also A' events. As far as I'm concerned it can be the new standard geometry, both for the counting house and for offline. 
 
For anyone doing work of the online monitoring or offline DQM please switch to this detector in order to exercise the real thing.
 
The surveyed tracker geometry will be a new release in the coming days. Sho and I need to crunch the numbers.
 
 Let me know if there is any questions.
 
/pelle
 
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