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Development of a universal serial bus interface circuit for ion beam current integrators.
K Suresh1, B K Panigrahi, K G M Nair
1Particle Irradiation Facility Section, Materials Science Division, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India.
The Review of Scientific Instruments
|September 4, 2007
Summary
A new universal serial bus (USB) interface circuit enables personal computer (PC) control of ion beam experiments. This system enhances accuracy and speed for ion beam current integration and data analysis.
Area of Science:
- Materials Science
- Electrical Engineering
- Physics
Background:
- Ion beam current integrators are crucial for experiments but often require manual operation.
- Interfacing these integrators with personal computers (PCs) for automation is challenging.
Purpose of the Study:
- To develop a universal serial bus (USB) interface circuit for seamless integration of ion beam current integrators with PC-based automated systems.
- To enable high-speed, bidirectional data transfer for improved experimental control and data acquisition.
Main Methods:
- The interface circuit utilizes a PIC16F877A microcontroller and a DLP2232 USB-universal asynchronous receiver-transmitter/first in, first out controller.
- It emulates ion beam current integrators on a host PC using the USB 2.0 protocol.
Main Results:
- The USB interface circuit successfully facilitated online in situ resistivity measurements of ion-irradiated tin thin films.
- Real-time electrical resistance monitoring confirmed the formation of the SnO(2) phase during O(+) ion implantation.
Conclusions:
- The developed USB interface circuit significantly enhances the automation, accuracy, and efficiency of ion beam irradiation and characterization experiments.
- This technology allows for the redesign of tedious experiments into user-friendly, PC-controlled processes.
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