Difference between revisions of "Compton"
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Revision as of 19:39, 7 February 2009
Hall A Compton polarimeter Wiki page
The new photon detector crystal is a cylinder of GSO with a diameter of 6 cm and a length of 15 cm. It was installed in Hall A in December 2008.
In October 2008, the crystal was tested at incident photon energies of 20 MeV, 22 MeV, 25 MeV, 30 MeV, and 40 MeV. We are working on extracting the response function.
PREx requires an integrating DAQ system, which will run on a Struck FADC. We are currently commissioning this DAQ with a prototype FADC.
Webcams were added to monitor the :
- hacp2 EthernetBlaster
- hacp3 webcam trigger
- hacp4 webcam on Beam Safety module, Front End power supply
- hacp5 webcam on silicon strips detector current
- hacp6 APC
- plug 1
- plug 2
- plug 3
- plug 4
APC : hareboot4
*plug 2 webcam *plug 3 EPICS Edet *plug 4 trigger *plug 7 FADC crate