E00110 DVCS from the Proton

1
E00-110DVCS from the Proton

• Hall A Collaboration Meeting,
• Dec 10-11, 2003
• Alex Camsonne

2
(No Transcript)
3
PbF2 Calorimeter

• 132 x (3cm x 3cm x 20 cm)
• Initial assembly complete
• Rewrapping 50 blocks, Jan. 04
• Blue LED pulser on carriage in front of array

Vertical scan of LED across 11 PbF2 blocks
4
Proton Array
100 trapezodal EJ200 Scintillators 70 wrapped
mounted to PMT support, Nov. 03
Active Base HV stabilization on first two
dynodes, Post-amplifier Anode DC current monitor.
50 active bases assembled Remaining bases Jan. 04.
5
Trigger FADC electronics

• 128 x 1GHz Analog Ring Sampler (ARS)

Sample and Hold (30ns) digital validation of
electron trigger by cluster finding in PbF2
Calorimeter
6
DVCS Black box
4 m motion for elastic H(e,ep) Calibration of
Calorimeter
49 U Rack
Igus Cable Tray (4.2m)
7
DVCS Support Carriage

• All pieces fabricated
• Support rests on Big-Bite carriage
• 15-22 degrees
• Longitudinal motion 1-5 m from target

8
Scattering Chamber
1cm wall, 60 cm radius Al partial sphere, Bid
package Jan. 04
9
Schedule

• January 04
• Target Chamber Bid Package
• February 04
• Full Detector assembly with electronics DAQ in
  EEL
• June 04 Installation in Hall A
• Tentative Schedule
• Mid August mid October 04
• E00-110, E03-106

10
DVCS Electronics