Status of Indus-1

Status of Indus-1 beam : May 1999


Light from Indus-1 : Photograph


UPDATE 7 :
Date: Wed, 9 Jun 1999 07:03:04 +0530 (IST)
From: "P.K. Nema"

We are glad to announce that Indus-1 SRS has exceeded its designed electron beam current storage target at 450 MeV (Nominal) energy.

On the night of 8th june 1999, it could accummulate 113 mA current against 100 mA target. It promises to go still higher in the days to come and thus allow its users to work with brighter synchrotron light.

All those who have contributed in any way for this machine, deserve to be congratulated as all systems performed excellently and in perfect harmony yesterday allowing its operators to hit well above the expectations. UPDATE 6:
Date: Mon, 31 May 1999 08:54:30 +0530 (IST)
From: "P.K. Nema"

Indus-1 progress is still good. On 27th may it could accummulate 75 mA; though 65 mA is more or less routinely achieved.


UPDATE 5:
Date: Wed, 12 May 1999 09:55:53 +0530 (IST)
From: "P.K. Nema"

Over the past few days, the Indus-1 performnace has improved so that it now stores up to 52 mA electron current with life-time (1/e) varying from 8 minutes at high current to 25 minuts at ~5 mA.

We feel that the short life-time is due to continuing process of SR induced desorption and consequent vacuum chamber wall cleaning process. Other possible reasons for limited life-time are also being investigated.


UPDATE 4:
Date: Mon, 3 May 1999 18:45:21 +0530 (IST)
From: "P.K. Nema"

In continuing progress of Indus-1 commissioning, the maximum stored beam current went up to 33 mA on 3rd May. The 1/e beam life time at such high current was estimated to be 4-5 minutes and at around 5-6 mA, it is around 18 minutes.

The maximum current reached and life time seem to depend on vacuum chamber wall cleaning action by synchrotron radiation. Both these characteristics must improve as we log in more operating hours with stored beam.


Earlier Status : April 1999


Photograph of Indus-1


The design Parameters of INDUS-1 are as follows:


INDUS-1 :-

Electron Energy : 450 MeV
Current : 100 mA
Critical wavelength:
a) Bending : 61 Angstroms
b) Wiggler : 31 Angstroms
Circumference : 19 meters
Magnetic Field : 1.5 Tesla
Beam Life time : ~ 4 hours
Bending radius : 1 meter
Lattice type : combined
Beam envelope vacuum : better than 10^-9 mbar
Photon Flux : 7x10^11 ph/sec/mrad/0.1%

Booster :-

Electron energy : 700 MeV
Beam current : 30 mA
Lattice type : separated
Magnetic field : 1.32 Tesla
Circumference : 28.44.meters
Beam envelope vacuum : better than 10^-6 mbar
Bending magnet radius : 1.8 meters