Biennial Report 2005-2007 - Saha Institute of Nuclear Physics

Facilities 281Scientists and Research Fellows•provides a number of current awareness services to alert users.•display of newly arrived books and other materials:•displays newly purchased documents on a periodic basis8.5 Publication & DocumentationCollection of the documents for the MN Saha Archives is still in progress. Digitization of almostall the documents that we have received so far has been done. Processing of these documentsfor retrieval of information has been commenced. As a part of the users’ awareness programme,a poster session entitled “A tale of two giants: Prof M N Saha and Prof H N Russel” and wastaken up by the P&D Unit using its own resources in Science Day celebration 2007. An internalreport on “A tale of two giants” has been prepared. Loopholes of the first web submitted periodicProgress Report is almost sorted out for this Biennial Report. Effort is being made to make thenext Progress Report fool proof and user-friendly.8.6 Central WorkshopThere are five sections in the Workshop. These are Computerized Numerical Control (CNC) MachiningSection, Conventional Machining Section, Welding Section, Glass Blowing Section andDesign & Drafting Section. The CNC machining environment has been successfully commissionedin the Workshop and these programmable machine tools are regularly being used for precisionmachining. Apart from different laboratories of the Institute, this facility is also being utilized bythe research workers from VECC, Calcutta University, Science College, Viswa-Bharati and othereducational institutes. Among the different development and fabrication jobs completed during theperiod under review following are noteworthy. In the INDUS - II project at Raja Ramanna Centrefor Advanced Technology, Indore, Saha Institute of Nuclear Physics has contributed one beam line.Different types of equipment positioning devices, connecting ports, flanges etc. have been designedand fabricated in the Workshop. These have already been fitted with the Turbo-pump system,Vertical Collimating Mirror System, Photon Shutter etc. in the said beam line. The magnetic coilsupport structure of the newly installed Magnetized Plasma Linear Experimental (MaPLE) devicein the Plasma Physics Division has been designed and fabricated in the Workshop. Its vacuum vesselsupport system has also been designed and fabricated here. In the ALICE project the Institutehas contributed the front absorber of the huge experimental set up installed in CERN, Geneva.The said front absorber is a gigantic composite structure of stainless steel and graphite. The earlierdesign of the metallic structure had been amended by the Workshop. In the earlier design therewere 12 copper frustums, which had been replaced with only four stainless steel ones and thisdesign amendment was approved by the Chief Design Engineer, ALICE project, CERN. The diameterof this nonmagnetic stainless steel disc was two meters, which was probably the largest singlepiece rolled stainless steel disc ever made in India. After a series of technical meetings with theengineers of Alloy Steel Plant (ASP), SAIL, Durgapur, these frustums were successfully fabricated.The fabrication of the huge graphite frustums was also very critical and uncommon job. Thesecomponents have been supplied to Geneva and have also been fitted perfectly without a singlerectification. Every year this workshop provides training for some trade apprentices in differenttechnical trades. These trainings are organized with the administrative assistance from RegionalDirectorate of Apprenticeship Training (RDAT), Eastern Region.