Difference between revisions of "Detectors on Left HRS"

From Hall A Wiki
Jump to: navigation, search
(updated the link to the newest cabling summary log)
 
(21 intermediate revisions by 2 users not shown)
Line 1: Line 1:
Maria, please fill this in.  Feel free to edit the other pages, too.  Or to add new pages. --Bob
+
<font color="red">Page under construction (July 2021)</font>
  
 +
<h4> Goals and Purpose for L-HRS during the SBS era.</h4>
  
 +
Used for the HCAL calibration.  Want to measure the HCAL detector efficiency by using pi+ production in gamma p -> pi+ n, as well as ep-> e' p.  The pion on L-HRS is a tag for a neutron. It is a single arm trigger. It needs to be clean to 0.5% level or know the contamination on similar level. We need to remove the proton and positron backgrounds. The L-HRS is also needed for the next hypernuclear experiments (E12-15-008, E12-20-013) in hall A.
  
A1 Aerogel information  
+
<h4>Cabling Summary</h4>
 +
 
 +
Cabling in ADC, TDC, and HV.  Nominal HV values.  https://logbooks.jlab.org/entry/3892105
 +
<h4>Scintillators</h4>
 +
 
 +
Installed are the S0c, S0h, and S2m.  S0c = S0 near cerenkov.  S0h = S0 from HAPPEX (it is removable and likely will be removed during beam), and S2m = segmented scintillator with 16 paddles and PMTs on both sides.
 +
 
 +
S0c cabling .... https://logbooks.jlab.org/entry/3884500
 +
 
 +
S2m documentation.  See section 2.4 (page 22) of the 2004 annual report ... https://hallaweb.jlab.org/publications/AnnualReports/AnnualReport2004.pdf
 +
 
 +
<h4>VDCs</h4>
 +
 
 +
A good references is the hall A NIM paper ... https://hallaweb.jlab.org/equipment/Hall-A-NIM.pdf
 +
 
 +
<h4>Gas Cerenkov</h4>
 +
 
 +
see ... https://logbooks.jlab.org/entry/3877237
 +
 
 +
hall A NIM paper ... https://hallaweb.jlab.org/equipment/Hall-A-NIM.pdf
 +
 
 +
 
 +
<h4>Pion Rejector</h4>
 +
 
 +
https://logbooks.jlab.org/files/2021/08/3892105/LHRS%20Pion%20Rejector%20Layout%20Aug%2011%202021.png
 +
 
 +
<h4> A1 Aerogel information </h4>
  
 
Performance in 2018 ....
 
Performance in 2018 ....
 
https://logbooks.jlab.org/files/2018/10/3605975/HRS_AerogelPerformance_20181008_gogami.pdf
 
https://logbooks.jlab.org/files/2018/10/3605975/HRS_AerogelPerformance_20181008_gogami.pdf
 +
 +
Also this article ... https://arxiv.org/pdf/0810.4630.pdf
 +
 +
A1 analysis examples in 2018 .... https://logbooks.jlab.org/entry/3624086  .... https://logbooks.jlab.org/entry/3605642 ....
 +
https://logbooks.jlab.org/files/2018/10/3611832/right_online_latest.pdf
 +
 +
------------------------------------------------------------------------------------
  
 
back to main page: https://hallaweb.jlab.org/wiki/index.php/L-HRS_for_SBS
 
back to main page: https://hallaweb.jlab.org/wiki/index.php/L-HRS_for_SBS

Latest revision as of 18:45, 11 August 2021

Page under construction (July 2021)

Goals and Purpose for L-HRS during the SBS era.

Used for the HCAL calibration. Want to measure the HCAL detector efficiency by using pi+ production in gamma p -> pi+ n, as well as ep-> e' p. The pion on L-HRS is a tag for a neutron. It is a single arm trigger. It needs to be clean to 0.5% level or know the contamination on similar level. We need to remove the proton and positron backgrounds. The L-HRS is also needed for the next hypernuclear experiments (E12-15-008, E12-20-013) in hall A.

Cabling Summary

Cabling in ADC, TDC, and HV. Nominal HV values. https://logbooks.jlab.org/entry/3892105

Scintillators

Installed are the S0c, S0h, and S2m. S0c = S0 near cerenkov. S0h = S0 from HAPPEX (it is removable and likely will be removed during beam), and S2m = segmented scintillator with 16 paddles and PMTs on both sides.

S0c cabling .... https://logbooks.jlab.org/entry/3884500

S2m documentation. See section 2.4 (page 22) of the 2004 annual report ... https://hallaweb.jlab.org/publications/AnnualReports/AnnualReport2004.pdf

VDCs

A good references is the hall A NIM paper ... https://hallaweb.jlab.org/equipment/Hall-A-NIM.pdf

Gas Cerenkov

see ... https://logbooks.jlab.org/entry/3877237

hall A NIM paper ... https://hallaweb.jlab.org/equipment/Hall-A-NIM.pdf


Pion Rejector

https://logbooks.jlab.org/files/2021/08/3892105/LHRS%20Pion%20Rejector%20Layout%20Aug%2011%202021.png

A1 Aerogel information

Performance in 2018 .... https://logbooks.jlab.org/files/2018/10/3605975/HRS_AerogelPerformance_20181008_gogami.pdf

Also this article ... https://arxiv.org/pdf/0810.4630.pdf

A1 analysis examples in 2018 .... https://logbooks.jlab.org/entry/3624086 .... https://logbooks.jlab.org/entry/3605642 .... https://logbooks.jlab.org/files/2018/10/3611832/right_online_latest.pdf


back to main page: https://hallaweb.jlab.org/wiki/index.php/L-HRS_for_SBS