[Halld-tagger] Beamline from quadrupole to tagger dipole?

[Timothy Whitlatch]

Hi Dan, 

Attached are the drawings. 

In a nutshell, the tube in the quad is 1.25" Outside Diameter (OD) with a 0.065" wall making the ID 1.12" or 28mm. 
The entrance tube to the Tagger dipole vacuum chamber is 1" OD with .095" wall making the ID 0.81" or 20.5mm. 

Hope this helps, 

Tim Whitlatch 
Hall D Engineer 
Jefferson Lab 
600 KELVIN DR STE 5 
Newport News, VA 23606-4468 
757-269-5087 


From: "Dan Sober" <sober at cua.edu> 
To: "Timothy Whitlatch" <whitey at jlab.org>, "Hall-D Tagged Beam Group" <halld-tagger at jlab.org> 
Sent: Wednesday, March 23, 2016 10:50:01 AM 
Subject: Beamline from quadrupole to tagger dipole? 

Tim, 
Do you know where I can find up-to-date drawings/specs of the beam line (including inner diameters) from the quad to tagger dipole and of the vacuum chamber at the entry to the dipole? 
In raytracing with the quadrupole, I am finding that the acceptance of the first few tagger hodoscope counters may be strongly affected by these limits. 
Thanks, 
Dan 

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