Nuclear Physics Home

A common facility for nuclear physics and materials science experiments


Detector cooling system

To reduce noise level and hence to increase energy resolution of silicon surface barrier detectors, cooling provision is provided with the brass detector holders. The Freon cooling arrangement, with coolant feedthrough on one of the back ports of the chamber, can bring detector temperature down up to -4o C for six detectors in half an hour. A warming up facility is installed along with the detector cooling system, once the timing performance is tested out. Warming up time for the detectors from -4o C to 20o C is about 20 minutes.

Gamma detector cup

Particle-gamma correlation studies require the gamma detector to be placed quite close to the target to have better count rates. We have vacuum compatible gamma detector cups to have access inside the chamber at 90o and 30o. Detectors with diameter upto 23 cm can be placed at a distance of 29 cm from the target, while detectors with diameter upto 8 cm can be placed at a distance of 9 cm from the target. Detectors with diameter upto 5 cm can be mounted from the top.

Gas detector set-up

Different types of gas detectors like ionization chambers, parallel plate avalanche counters (PPAC), multi wire proportional counters (MWPC) etc. are used in GPSC for nuclear physics as well as materials science experiments. A flange with gas feedthrough is mounted at a back angle port. The gas flow control system is made in such a way that it can handle different gas pressure regions according to the requirement.

In-vacuum target transfer facility

This versatile facility which consists of a feedthrough, a transfer body and an intermediate body has multipurpose usage. Within a time lapse of about 20 minutes, one target ladder can be replaced with another with very little disturbance in the chamber vacuum (chamber vacuum changes from low 10-6 mbar to low 10-5 mbar).

Contact us:
Dr. P. Sugathan
Inter University Accelerator Centre
Aruna Asaf Ali Marg, Post Box 10502
New Delhi 110067, India
Phone: +91 11 26893955
Telefax: +91 11 26893666
This page is maintained by K.S. Golda ( ). Last updated on January 23, 2012.