PMT Photomultiplier Charge Sensitive Amplifier Module for DIY Gamma Spectrometry

Description

Charge Sensitive Amplifier for Photomultiplier PMT tube
works fine for audio cart based MCA in amateur DIY Gamma Ray Spectroscopy
easy to setup, not need any special adjustments
PMT Pre-Amplifier Unit:
Improved and miniature charge sensitive pre-amplifier for amateur gamma spectroscopy Pulse Height Analysis. The amplifier can work with Positive or Negative PMT high voltage configuration.
Default preset is for Positive polarity HV
. The output of the amplifier is compatible with computer MIC input or Line input and can be used with freeware
like PRA, Theremino or BecqMonitor.
You can adjust PMT pulse duration from ~50uS up to ~250uS. For better spectroscopy results please use 24bit audio cart.
The board has excellent results with less than 9% FWHM on 24bit audio cart and count rate of the tested samples less than 1000 cps. If your tested sample has higher count rate you can increase the distance between the probe and the sample.  Adjust amplification factor by adjusting high voltage level on tube.
Have any questions? You are welcome to contact me!
Technical data:
Supply Voltage: 3.5V-12V DC input
Compatible with Positive HV configuration
Compatible with audio cart MIC/Line input
Dimensions: 29 x 24 mm
SMA signal output jack
Include high performance 10MHz op-amp
Include voltage regulator on the PCB
Note:
For correct wiring please use the included diagram. Electrical circuit is not included.
Setup:
Use included diagram to wire the module to PMT and power supply. Set HV to the minimum and slowly rise HV on PMT tube, check amplifier pulses on SMA output. Adjust HV to get acceptable amplification before signal from higher energy gets into clipping. Adjust 1M potentiometer to set RC time of the pulse. Usually audio card based MCA require 100uS duration for each pulse. If you do not have oscilloscope you can do same adjustment with audio card software like "Theremino Audio Examples".
To our valued customers, please read purchase terms before you bid or buy!
We'll use the best shipping method availiable to your destination, however some areas and some countries now will take much longer to receive international mail. Please allow longer delivery time than usually and conact me prior buying if you want to change delivery method to DHL Express (recommended).
Packaging:
The product dispatched carefully packed into anti-static bag and sturdy carton box. We use only high quality and new packaging materials.
Technical issues and support:
If you purchase this item you are agree that you have skills and tools to perform required DIY soldering (or de-soldering) and you know how to connect additional external components or modules. All project components should be installed and soldered in proper polarity with proper connectors. Any hardware/software modifications
are not covered with warranty.
Please read carefully product title, description and include list. Any questions are welcome. If you received broken or defective parts please contact us first, because we can resolve this problem in best way.
Handling time:
10 business days to process international orders required after receiving cleared payment. This does not include the number of business days the shipping service will take to deliver the item to you. We can upload a tracking number during handing time even before your package was transferred to logistic company for the delivery.
Shipping:
We dispatch your order during 3-10 business day and will upload a tracking number to eBay for USA buyers only. Take note, international shipping is more complicated and longer than domestic, that's why when you buy internationally it mean you are agree to wait for the package. For Economy International Delivery default stated time is 3-5 weeks. Some countries may take longer because of your country custom regulation rules or postal service. USA usually takes 2-5 weeks; Europe 1-5 weeks; Australia 2-5 weeks; Germany 3-5 weeks; Israel 3-7 days; Russian Federation 4-6 weeks; All other countries 3-5 weeks default delivery time.
Tracking:
If you not received your package during 30 days please contact us first with "Details about item" request and not with opening "non-receiving case" directly. Take note, we ship through state export account and not from post office branch. This is the reason why your package is trackable only after it was sent abroad from Israel export and not at the date of collecting or at the date we uploaded a tracking number. Online tracking system in Israel displays information with big delays, post website provide tracking info
for reference only several days after your item was sent abroad
! Please be patient for the delivery and contact us if you have additional questions about shipping.
Custom & Duty Fee:
All international buyers are responsible to cover any possible custom fee or import tax that maybe applied at his/her country. We are obligated by export law of Israel to declare an order price as it was stated in your PayPal bill. German buyers, please remember when you buy that in Germany import custom rules require you to pay fee. We are not accept any claim because of your country custom regulation rules / delays / fee! Please contact your local custom office for more details about custom process and import tax.
You are responsible for any VAT, tariff, duty, taxes, handling fees, brokerage charges, customs clearance charges, etc. required by your country for importing consumer goods! There is no way for RH Electronics (the shipper) to predict your country's customs/fee habits, so be prepared to pay full VAT on the fully declared value of your order as well as any customs fees your postal system may charge you! If you do not pay the required brokerage fees, VAT, tariff, duty, taxes, handling fees, customs clearance charges, etc - we cannot issue any refunds.
Our shipping system is completely automated, and we cannot falsify customs forms. The customs forms will describe the cost of your order and contents as “Education DIY Kit for soldering”.We cannot mark orders as "gift" or lower the values.
Returns:
Accepted if you not started to solder/use device. In original package, including all components. You'll need to cover return shipping cost.
Payment:
Paypal only for eBay purchases.
V.A.T.:
If you live in Israel please take note, all buyers with DELIVERY ADDRESS WITHIN ISRAEL HAVE TO PAY 17% VAT! Refusing to pay tax will force us to cancel the order. If you live in Israel and want to purchase our item on eBay please contact us first with "Shipping details" request and we'll send you eBay offer with adjusted shipping price and VAT included.
Thank you for your positive feedback!