From Hall A Wiki
Revision as of 19:39, 7 February 2009 by Dseymour (Talk | contribs) (Photon detector)

Jump to: navigation, search

Hall A Compton polarimeter Wiki page

Hall A compton webpage

Standard Compton



Compton Upgrade

Photon detector

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.

Electron detector

Webcams address

Webcams were added to monitor the :

APC : hareboot4

*plug 2 webcam
*plug 3 EPICS Edet
*plug 4 trigger
*plug 7 FADC crate

Compton Edet DAQ