CZT from Lawrence Berkeley Natl Lab (LBNL) - help welcome

Scintillation crystals, PMTs, voltage dividers etc...
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Joined: 19 Sep 2020, 19:25

CZT from Lawrence Berkeley Natl Lab (LBNL) - help welcome

Post by ziouranio » 19 Sep 2020, 20:44

Hello everybody,
I recently bought a CZT coplanar grid detector on Ebay and I am struggling to find how to connect it.
LBNL detector side
IMG_0477.jpg (47.43 KiB) Viewed 414 times
LBNL detector bottom
The label says "CZT COPLANAR-GRID DETECTOR -1500V DET. J3-L2413-1761-O1-SC 1CM3 LBNL" and has a Hirose (HRS) 4 pole bayonet connector plus a gold-plated coax connector.
The only info that I had been able to find on the net is a slideshow (attached) from Berkeley Lab showing exactly the can detector that I have but with no details on connections.
LBNL CZT detector.jpg
Pic from the LBNL slideshow
LBNL detector.pdf
pdf LBNL slideshow
(1.73 MiB) Downloaded 28 times
These are some pics on the disassebled unit:
CZT cube detector view
Pre-amp PCBA front with supply connections
IMG_0479.jpg (40.37 KiB) Viewed 414 times
Pre-amp PCBA back with HV connections
IMG_0482.jpg (39.2 KiB) Viewed 414 times
I did some reverse engineering and I guess that the built-in amplifier works with dual +/-5V supply or lower.
LBNL CZT coplanar-grid detector reverse eng.pdf
LBNL CZT reverse engineerinered sch
(231.78 KiB) Downloaded 37 times
If anybody has some information and wouldn't mind to share, I would be happy to study everything before I attempt frying this nice can(supposing it isn't already blown by itself).


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