Speaker
Rupamoy Bhattacharyya
(Institute of Physics (IN))
Description
A systematic study of the absolute gain of a prototype quad-GEM detector at different gas flow rates is carried out. The gain uniformity at the various segment of the detector is also investigated. The active surface area (10 cm x 10 cm) of the detector is divided into 64 zones of equal area (1.25 cm x 1.25 cm), and each zone is irradiated with a collimated Fe$^{55}$ X-ray source. A constant voltage difference of 360 V is maintained across each GEM foil, and the gain is calculated using the measured anode current from the detector. A pre-mixed gas mixture of Ar:CO$_2$ in the ratio of 70:30 is used in the range of 3 - 30 SCCM flow rate for this purpose.
| What is your experiment? | Gain uniformity of a quad-GEM detector at different gas flowrates |
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Authors
Rupamoy Bhattacharyya
(Institute of Physics (IN))
Prof.
Pradip Kumar Sahu
(Institute of Physics)
Mr
Sanjib Sahu
(Institute of Physics)
Dr
Rama Prasad Adak
(Taki Government College)
