Photon Multiplicity Detector (PMD)
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Photon Multiplicity Detector (PMD) is a detector used in the measurement of the multiplicity and spatial distribution of photons produced in nucleus - nucleus collisions. In short form, it is denoted by PMD.[1][2] It was incorporated in the WA93 experiment.[2] The funding for research and development of the design of PMD was done by the Department of Atomic Energy (DAE) and the Department of Science and Technology (DST) of the Government of India. The detector was constructed in the collaboration of Variable Energy Cyclotron Centre in Kolkata, Institute of Physics in Bhubaneswar and group of universities at Chandigarh, Jaipur and Jammu.[3]
Description
[edit]A PMD typically consists of two main layers Veto Detector and Preshower Detector. Veto Detector layer is designed to reject charged particles. Photons pass through a converter in Preshower Detector layer, initiating an electromagnetic shower. The detector then measures the number of cells activated by the shower, providing information about the photon's energy and position.[1]
References
[edit]- ^ a b "pmdpage". india.web.cern.ch. Retrieved 2024-08-05.
- ^ a b Viyogi, Y. P.; Aggarwal, M. M.; Badyal, S. K.; Bhalla, K. B.; Bhatia, V. S.; Chattopadhyay, S.; Das, A. C.; Devanand; Mazumdar, M. R. Dutta; van Eijndhoven, Nick; Ganti, Murthy S.; Garcha, B. S.; Ghosh, T. K.; Gupta, S. K.; Gutbrod, H. H. (1994-01-03). "Photon multiplicity measurements in nucleus-nucleus collisions at 200 A GeV". Nuclear Physics A. 566: 623–628. doi:10.1016/0375-9474(94)90708-0. ISSN 0375-9474.
- ^ cern (2004-09-05). "Indian detector stars at Brookhaven". CERN Courier. Retrieved 2024-08-05.
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