Table of Contents
Princeton Gamma-Tech (PGT, now Thermo Scientific). Unfortunatley, their x-ray division was liquidated per the official note on their website:
“X-Ray and Nuclear products have been discontinued and no longer offered for sale by Thermo Fisher Scientific. For Service and Support…Thermo Fisher Scientific has entered into an agreement with Berkeley Nucleonics Corporation (BNC) to provide warranty and non-warranty support for X-Ray and Nuclear products”
However, BNC documents seem to pitch it as part of their company and I've seen “BNC Princeton Division” mentioned (ex: [Nuclear presentation]).
Product summary
x-ray product summary:
Where:
- MCA: Multichannel analyzer
PRISIM 60 series
older units
PRISIM 2000 series
Official title: “Prisim 2000 Si(Li) and HpGe Detector Series”
Detectors [manual]:
Window type: ultra thin
Cooling method: LN2 or JT Cool
Model | Crystal | Crystal size (mm*2) | FWHM (eV) |
---|---|---|---|
PRISIM 2000 | Si(Li) | 10 | 129 |
PRISIM 2000 | Si(Li) | 30 | 135 |
PRISIM 2000 | Si(Li) | 60 | 148 |
PRISIM 2000 | HpGe | 10 | 115 |
PRISIM 2000 | HpGe | 50 | 129 |
Typical system [Gammy and X-Ray detectors]:
- preamp
- PGT Model 326 LN2 level detector
- PGT Model 312, 314 or 315 HV PS
- Pulser
- PGT Model 347 Amplifier
- ADC
- MCA
Pre-amp
Connections:
Label | Type | Notes |
---|---|---|
TEST | BNC | |
BIAS | RP BNC / HV thing? | |
POWER | DB-9M | |
OUTPUT | BNC | |
INHIBIT | BNC |
TODO: get better info on function/pinout of each
JM unit
This unit was bought for reasonably low cost with hope to learn about them and maybe fix it. Worst case, this unit should work under atmosphere or scrap for the dewar
Instrument
Front:
Sides:
Vacuum section:
Close up of broken window:
The screen is still intact. This was supposed to protect it:
My guess is that it got damaged during cleaning
Top:
Close up of cryocooled electronics (FET + pre-amp):
Covered removed:
Tank
Labels:
Reads:
MODEL 0PJ013-1038 SERIAL 2051 BIAS -600 VDC MADE IN USA PRINCETON GAMMA-TECH
Instrument mating flange (connected):
Instrument mating flange (disconnected):
Tank side thermal conduction path:
Looks to be some sort of braided copper alloy
XS169-IXI
From listing: “Item removed from a Cambridge Scanning Electron microscope (I believe an s200)”
Preamp:
Tank:
Tank label:
Reads:
MODEL XS169-IXI SERIAL 1321 BIAS -600 VDC MADE IN USA PRINCETON GAMMA-TECH ...
LS30148 detector
This unit appears to have ConFlat connections and a fixed angle detector. Has the same sort of preamp seen on other models
JT Cool
Small crycooler to replace the LN2. Requires Model 483 Controller (white box thing).
Summary [NPC]:
- Uses “propreitary refridgerant mixture” (He?). CFC free
- Claims 5 years of maintenance free operation
- Supports up to 50 foot gas lines
- “Retrofit available for existing detectors, including those of other manufacturers”
- 10-35C environment
- Down to 70K
- Copper gas line option
Pix
Imagemaster
They had a LS30148 and a PRISM 60 for sale along with it, unclear if they somehow go together.
IGC10-ES
Overview:
Detector area:
Label:
Reads:
MODEL IGC10 ES SERIAL 1502 BIAS + 2500V
References
- Nuclear products catalog [NPC]: http://www.berkeleynucleonics.com/resources/Nuke-catalog.pdf
- PRISM 2000 Si(Li) and HpGe DETECTOR SERIES USERS MANUAL (“2000 manual”): http://www.berkeleynucleonics.com/resources/Germanium-igx_manual.pdf
- Much more detailed: http://savtek.com.tr/dosyalar/teknik/Gamma_and_Xray_Detectors_Rev1_200507.pdf
- Princeton Gamma Tech “System 4” teardown: http://www.retrotechnology.com/herbs_stuff/pgt_parts.html
- NUCLEAR PRESENTATION [Nuclear presentation]: http://www.berkeleynucleonics.com/resources/Nuclear_Presentation.pdf
- BNC GERMANIUM AND SILICON X-RAY DETECTORS [BNC Ge]: http://www.berkeleynucleonics.com/resources/Germanium_Silicon_Detectors.pdf
- eBay 191140107113: solanotraders, “PGT PRINCETON GAMMA TECH MODEL LS30148 DETECTOR”
- eBay 400720324518: solanotraders, “PGT PRINCETON GAMMA TECH IMAGEMASTER”
- eBay 270642145582: clevelandohiocarparts, “PRINCETON GAMMA TECH XS169-IXI Microscope Stereoscan”
- eBay 270641099429: clevelandohiocarparts, “PGT Princeton Gamma-Tech Video Switch - free shipping”
- eBay 360526462914: buyhitek, “PRINCETON PGT INTRINSIC GERMANIUM DETECTOR IGC10-ES BIAS +2500V”