<div dir="ltr"><div><div><div><div><div><div>Thanks for the update. <br></div>It seems with the gate reduction and the new baffles the photon background is improved.<br><br></div>Could you check again the efficiency preshower cut ? It seems it might be better than last time.<br>
<br></div>Also not sure if you or Zhiwen can do it ? But can you plot the ratio of highest sum of 3 divided by sum of 7 for pions and electrons ?<br><br></div>One odd thing from those plots it seems the pions are not an issue, am I mistaken reading the plots ?<br>
<br></div>Do you think we still need to read full waveform ? <br><br></div>Alexandre<br><div><div><div><div><div><div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Sep 9, 2013 at 1:55 PM, Jin Huang <<a href="mailto:jinhuang@jlab.org">jinhuang@jlab.org</a>> wrote:<br>
<blockquote class="gmail_quote"><div>> In your plots you are using an up to 3.8 GeV threshold for the trigger curve. What is the effect on the electron rate and expected error?<br>
<br>
</div>That is based on the cut to keep DIS electrons of x>0.35<br>
<div><br>
> Will the updated rate table be available soon?<br>
<br>
</div>We are working on that<br>
<div><br>
> Shouldn't we put the lead baffle results in the writeup?<br>
<br>
</div>Quite right! After another discussion with Zhiwen earlier today, I realized this study read in the background for kryptonic baffle. Zhiwen and I are working on the lead baffle background now.<br>
<div><br>
Jin<br>
<br>
__________________________________________<br>
<br>
Jin HUANG<br>
<br>
Los Alamos National Laboratory<br>
PO Box 1663, MS H846, Los Alamos, NM 87545<br>
<br>
Office:<a href="tel:%28505%29%20665-2523">(505) 665-2523</a>, Cell:<a href="tel:%28757%29%20604-9946">(757) 604-9946</a><br>
__________________________________________<br>
<br>
<br>
<br>
-----Original Message-----<br>
</div><div><div>From: Xiaochao Zheng [mailto:<a href="mailto:xiaochao@jlab.org">xiaochao@jlab.org</a>]<br>
Sent: Monday, September 09, 2013 11:52 AM<br>
To: <a href="mailto:jinhuang@jlab.org">jinhuang@jlab.org</a><br>
Cc: solid ec; solid daq; Zhiwen Zhao<br>
Subject: Re: [Solid_ec] 5th update on the PVDIS background<br>
<br>
Hi Jin:<br>
<br>
Thanks for your work. Two questions:<br>
<br>
In your plots you are using an up to 3.8 GeV threshold for the trigger curve. What is the effect on the electron rate and expected error? Will the updated rate table be available soon?<br>
<br>
Shouldn't we put the lead baffle results in the writeup?<br>
<br>
Xiaochao<br>
<br>
----- Original Message -----<br>
From: "Jin Huang" <<a href="mailto:jinhuang@jlab.org">jinhuang@jlab.org</a>><br>
To: "solid ec" <<a href="mailto:solid_ec@jlab.org">solid_ec@jlab.org</a>>, "solid daq" <<a href="mailto:solid_daq@jlab.org">solid_daq@jlab.org</a>>, "Zhiwen Zhao" <<a href="mailto:zwzhao@jlab.org">zwzhao@jlab.org</a>><br>
Sent: Sunday, September 8, 2013 9:42:10 PM<br>
Subject: [Solid_ec] 5th update on the PVDIS background<br>
<br>
<br>
<br>
<br>
<br>
Dear All,<br>
<br>
<br>
<br>
Thanks to Zhiwen to update the EC background with the "MORE1" baffle. Thereafter, the EC performance was simulated again as the fifth update on the PVDIS EC:<br>
<br>
· <a href="https://userweb.jlab.org/~jinhuang/Meeting/2012.12.15%20SoLID%20Collaboration%20Meeting/UpdateOnPVIDSEC.pptx">https://userweb.jlab.org/~jinhuang/Meeting/2012.12.15%20SoLID%20Collaboration%20Meeting/UpdateOnPVIDSEC.pptx</a><br>
<br>
· <a href="https://userweb.jlab.org/~jinhuang/Meeting/2012.12.15%20SoLID%20Collaboration%20Meeting/UpdateOnPVIDSEC.pdf">https://userweb.jlab.org/~jinhuang/Meeting/2012.12.15%20SoLID%20Collaboration%20Meeting/UpdateOnPVIDSEC.pdf</a><br>
<br>
In short, significant improvement in performance was observed. However, background is still strong for the inner radius region within the high-radiation azimuthal sectors, which is now dominated by photons. Downstream study from Zhiwen would quantify the new total trigger rate.<br>
<br>
<br>
<br>
All plots and their data points are saved to the SVN for the technical writeup. In particular, the trigger turn-on curves are saved to data file:<br>
<br>
· <a href="https://solid.physics.umass.edu/svn/solid/solidtech/calorimeter/figs/Lead2X0PbBlock_Hex.1.PVDIS_RunALL_GetEfficiencies_Full_bgd_BackGround_Sept2013_Eklog_R_low_R0_ALL.rootTriggerSummarylow.root">https://solid.physics.umass.edu/svn/solid/solidtech/calorimeter/figs/Lead2X0PbBlock_Hex.1.PVDIS_RunALL_GetEfficiencies_Full_bgd_BackGround_Sept2013_Eklog_R_low_R0_ALL.rootTriggerSummarylow.root</a><br>
<br>
· <a href="https://solid.physics.umass.edu/svn/solid/solidtech/calorimeter/figs/Lead2X0PbBlock_Hex.1.PVDIS_RunALL_GetEfficiencies_Full_bgd_BackGround_Sept2013_Eklog_R_high_R0_ALL.rootTriggerSummaryhigh.root">https://solid.physics.umass.edu/svn/solid/solidtech/calorimeter/figs/Lead2X0PbBlock_Hex.1.PVDIS_RunALL_GetEfficiencies_Full_bgd_BackGround_Sept2013_Eklog_R_high_R0_ALL.rootTriggerSummaryhigh.root</a><br>
<br>
The text for the writeup are not changed, pending decision on these plots.<br>
<br>
<br>
<br>
Cheers,<br>
<br>
<br>
<br>
Jin<br>
<br>
<br>
<br>
<br>
<br>
__________________________________________<br>
<br>
<br>
<br>
Jin HUANG<br>
<br>
<br>
<br>
Los Alamos National Laboratory<br>
<br>
PO Box 1663, MS H846, Los Alamos, NM 87545<br>
<br>
<br>
<br>
Office:<a href="tel:%28505%29%20665-2523">(505) 665-2523</a>, Cell:<a href="tel:%28757%29%20604-9946">(757) 604-9946</a><br>
<br>
__________________________________________<br>
<br>
<br>
<br>
<br>
<br>
-----Original Message-----<br>
From: <a href="mailto:solid_daq-bounces@jlab.org">solid_daq-bounces@jlab.org</a> [mailto:<a href="mailto:solid_daq-bounces@jlab.org">solid_daq-bounces@jlab.org</a>] On Behalf Of Xiaochao Zheng<br>
Sent: Tuesday, September 03, 2013 8:42 PM<br>
To: solid ec; solid daq<br>
Subject: [Solid_daq] SoLID EC/DAQ meeting Wednesday 1-3pm<br>
<br>
<br>
<br>
Dear All:<br>
<br>
<br>
<br>
This is a reminder that we will have the EC/DAQ meeting tomorrow (Wednesday) from 1 to 3pm. I have reserved CC F228 for the meeting.<br>
<br>
<br>
<br>
The call-in instruction is as usual:<br>
<br>
<br>
<br>
US: <a href="tel:1-866-740-1260">1-866-740-1260</a> International <a href="tel:303-248-0285">303-248-0285</a><br>
<br>
passcode: 1066548<br>
<br>
<br>
<br>
Thanks,<br>
<br>
<br>
<br>
Xiaochao<br>
<br>
<br>
<br>
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</div></div></blockquote></div><br></div></div></div></div></div></div></div></div>