CSI Detector

Scintillation crystals, PMTs, voltage dividers etc...
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Zagros
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CSI Detector

Post by Zagros » 08 Aug 2019, 05:27

Hello to all!
Anyone knows this detector?


https://rover.ebay.com/rover/0/0/0?mpre ... 4313963951

Thanks

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iRad
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Location: Stuart, FL USA
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Re: CSI Detector

Post by iRad » 08 Aug 2019, 07:11

Based on the model number "13B38/0.3-CS-X", it appears to be a (X) customer custom 13mm diameter by 38mm long CsI (probably Tl) crystal canned together with a TO-8 Metal Package PMT (probably a R5600 or R7400). The pins are very tiny and fragile.

I'm sure Luuk could tell you more about it.
Cheers, Tom Hall / IRAD INC / Stuart, FL USA
Please check out my eBay Store: http://stores.ebay.com/The-Rad-Lab

luuk
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Re: CSI Detector

Post by luuk » 09 Aug 2019, 01:29

Hi Nicola,
The detector is exactly as Tom described it, 13mm round, 38mm long, the crystal is CsI(Tl), the pmt R7400u.
It is difficult to connect them because the pmt wires are very fragile and it is hard to find the right pmt socket.
If it works you expect a resolution from around 7.2-7.5%@662KeV average.
Often these secondhand detectors have broken pins(wires) or the pmt is broken.
Luuk

Zagros
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Joined: 23 Jul 2017, 01:53
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Re: CSI Detector

Post by Zagros » 09 Aug 2019, 05:02

luuk wrote:
09 Aug 2019, 01:29
Hi Nicola,
The detector is exactly as Tom described it, 13mm round, 38mm long, the crystal is CsI(Tl), the pmt R7400u.
It is difficult to connect them because the pmt wires are very fragile and it is hard to find the right pmt socket.
If it works you expect a resolution from around 7.2-7.5%@662KeV average.
Often these secondhand detectors have broken pins(wires) or the pmt is broken.
Luuk
Ok.
Thank you!
I’ll look for something else.
Bye!

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iRad
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Location: Stuart, FL USA
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Re: CSI Detector

Post by iRad » 12 Aug 2019, 11:43

These Scionix CsI detectors are nice for their small size, however they use one of the more difficult sockets to find and/or wire a voltage divider for. Wiring directly to the very fragile pins is possible, but risk to the PMT is great and is not advised.
Attachments
Tiny Scionix CsI Detector_01.JPG
Tiny Scionix CsI Detector
Cheers, Tom Hall / IRAD INC / Stuart, FL USA
Please check out my eBay Store: http://stores.ebay.com/The-Rad-Lab

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iRad
Posts: 101
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Location: Stuart, FL USA
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Re: CSI Detector

Post by iRad » 12 Aug 2019, 14:14

Here is what wiring the small TO-8 PMTs socket is like... I wired this one for most efficient power use. Notice in the pictures it now runs well at only 650 volts.
Attachments
IMG_6412_01.JPG
Just the resistors wired to the TO-8 Socket
IMG_6414_02.JPG
Fully wired socket
IMG_6416_03.JPG
Running at 650 Volts
Cheers, Tom Hall / IRAD INC / Stuart, FL USA
Please check out my eBay Store: http://stores.ebay.com/The-Rad-Lab

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