title: Performance of Variable Energy Cyclotron Centre superconducting cyclotron liquid nitrogen distribution system.
abstract: The liquid nitrogen distribution at Variable Energy Cyclotron Centre, Kolkata, India K500 superconducting cyclotron uses parallel branches to cool the thermal shield of helium vessel housing the superconducting coil and the cryopanels. Liquid nitrogen is supplied to the thermal shields from a pressurised liquid nitrogen dewar. Direct measurement of flow is quite difficult and seldom used in an operational cryogenic system. The total flow and heat load of the liquid nitrogen system was estimated indirectly by continuous measurement of level in the liquid nitrogen tanks. A mathematical model was developed to evaluate liquid nitrogen flow in the parallel branches. The model was used to generate flow distribution for different settings and the total flow was compared with measured data.
authors: Variable Energy Cyclotron Centre, I/AF Bidhan Nagar, Kolkata 700064, India.
authors: Gautam
authors: G
authors: Pal
authors: Variable Energy Cyclotron Centre, I/AF Bidhan Nagar, Kolkata 700064, India.
authors: Chinmay
authors: C
authors: Nandi
authors: Variable Energy Cyclotron Centre, I/AF Bidhan Nagar, Kolkata 700064, India.
authors: Tamal Kumar
authors: TK
authors: Bhattacharyya
authors: Variable Energy Cyclotron Centre, I/AF Bidhan Nagar, Kolkata 700064, India.
authors: Alok
authors: A
authors: Chakrabarti