• Beam Energy : 20 MeV
• Conventional circular design
• Magnet pole diameter – 980 mm
• Vacuum Chamber Material: Cylindrical Shell -SS316LN, Top & Bottom Dipole Faces-Low Carbon Electrical Grade Steel
• Sealing : Viton O’ring
• Operating pressure ~ 1E-6 mbar with beam, ~ E-7 mbar range without beam
• Vacuum Pumps: SIP (270l/s, 400l/s)
• Gauges: PIG, BAG

• Beam Energy 450/550 MeV
• Vacuum Envelope Circumference: 28.44 m
• Operating Pressure: ~ 1E-7 mbar with beam, ~ E-8 mbar range without beam
• Vacuum Chamber Material: SS304L
• Vacuum Pumps :12 SIPs and 2 TMPs
• Gauges: PIG-6nos

• Vacuum Envelope Circumference: 18.96 m
• All metal Bakeable System
• Dipole Chambers: 04 Nos.
• Vacuum Chamber Material: SS304L
• Operating Pressure : ~1E-9 mbar with beam, ~ E-10 mbar range without beam
• Vacuum Pumps:11 SIPs, 4 DIPs, 11 TSPs, 2 TMPs
• Gauges : BAG- 4nos

Indus-2 (2.5GeV, 200mA) synchrotron radiation source consists of 172.43m long ultra-high vacuum (UHV) system to provide UHV environment to stored e-beam for its longer lifetime adequate for three shifts operation. It is the largest UHV system of country comprising of ~ 600 nos. of UHV components and instruments and running continuously round the clock 24x7 days since commissioning in year 2005. Over the years several upgradations of the system were done to accommodate various new devices including three undulators, four new kicker chambers, two new RF-cavities and vertical pinger magnet chamber. Beam lifetime of ~ 84 hr. with @2.5 GeV, 100 mA beam was achieved on October 23, 2019.

• Vacuum Envelope Circumference: 172.40 m
• Operating Pressure: ~1E-9 mbar with beam, ~ E-10 mbar range without beam
• All metal Bakeable System
• Vacuum Sectors : 14
• Vacuum Chamber Material: Al alloys
• Dipole Chambers: 16 Nos., Straight Section Chambers: 44 Nos.
• NEG coated undulator chamber: 03 Nos.
• Photon Absorbers: 64 Nos.
• RF-Shielded Bellows: 44 Nos.
• Vacuum Pumps: SIP-99 Nos., TSP-102 Nos.,
• BAG - 54 Nos., RGA: 12 Nos.
• RF contact Gate Valves: 14 Nos.

• Indus-2 ring has been upgraded with deployment of three insertion devices namely U1, U2 and U3 undulators in LS-2, LS3, LS5 straight sections.
• Vacuum systems of these undulators were designed, developed and successfully installed within stipulated time schedule
• Vacuum system of these undulators are identical and shown in Fig-5a (3D-schematic typical).
• Material of undulator chamber: EN AW6060 -T6
• End Flange of chamber: NW160-CF Bimetallic SS316L + AA6061-T6
• UHV Pumping: Ti-Zr-V NEG thin film + SIPs
• Chamber internal dimension: 81mm (W)x 17mm (H) racetrack
• Length of chamber: 2700 mm for U1 and U2 and 2200 mm for U3
• Operating Pressure ~ 1E-10 mbar with beam and in lower order of 1E-11 mbar without beam.
• Activation Temperature & Time of NEG Film : 170°C x 24 hr

• Electron accelerator based demonstration radiation processing facility at Devi Ahilya Bai Holkar Fruit and Vegetable Mandi Complex, Indore consists of two electron linear accelerators (linacs) each of 10 MeV, 5 kW
• Vacuum systems of both the linacs are identical and schematic layout is shown in Fig 6a.
• Vacuum Envelope Material: SS316L, OFE Copper, Titanium
• Operating Pressure: ~ 10^-7 mbar range with beam
• Vacuum Pump: SIPs (70 l/s)-04 Nos.
• Gauge: Cold Cathode Full Range Gauge Pfeiffer PKR 251

• Two vacuum Sectors
• Vacuum Envelope Material: SS304L/316L, SS316LN, Al alloys, OFE Copper, Titanium
• Operating Pressure: ~ 10^-7 mbar range with beam
• Vacuum Pump: SIPs (70 l/s)-05 Nos.
• Gauge: Cold Cathode Full Range Gauge Pfeiffer PKR 251- 2 Nos

• Short pulse high power EM radiation in 12.5-50 µm wavelength band
• Length of vacuum system: 17m
• Four Vacuum Sectors: Linac section, beam transport line optical cavity and beam dump line
• Operating Pressure: < 3x10^-8 mbar with beam
• Vacuum Envelope Material: SS304L, OFE Copper, AA6063-T6
• Vacuum Pumps : SIPs (140 l/s-5 nos, 70 l/s-12 nos and 35 l/s- 2 nos)
• Gauge: BAG – 11 Nos