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Mishra G.,Insertion Device Development and Measurement Laboratory | Sharma G.,Insertion Device Development and Measurement Laboratory | Khullar R.,Insertion Device Development and Measurement Laboratory | Prakash B.,Insertion Device Development and Measurement Laboratory | Gehlot M.,Insertion Device Development and Measurement Laboratory
Journal of Physics: Conference Series | Year: 2014

Two undulators for free electron laser applications are under fabrication at Insertion Device Development & Measurement Laboratory, DAVV, Indore. The first one is of PPM type with twenty periods, 50 mm each period. The second one is a hybrid undulator with twenty five periods, 20 mm each period. NdFeB magnets of rectangular cross section 12.5mm, 12.5mm & 6.25 mm, 6.25 mm will be used for the undulators respectively. Each magnet length is of 50 mm. Each magnet is scanned by a laser micrometer to ensure gap uniformity along the length of the undulator. In this paper we describe the technical design details of both the undulators. © 2014, Institute of Physics Publishing. All rights reserved.


Prakash B.,Insertion Device Development and Measurement Laboratory | Huse V.,Insertion Device Development and Measurement Laboratory | Gehlot M.,Insertion Device Development and Measurement Laboratory | Mishra G.,Insertion Device Development and Measurement Laboratory | Mishra S.,Insertion Device Development and Measurement Laboratory
Optik | Year: 2016

In this paper we analyze the spectral properties of undulator radiation with an electromagnet undulator for electron injected off the undulator axis. The electromagnet undulator is self bi-harmonic for locations near to the electromagnet. The electrons execute additional betatron oscillation when it injected off the undulator axis. It is observed that the electromagnet undulator can be used for harmonic lasing free electron laser operates at the cost of betatron oscillations for electron injected off the axis. © 2015 Elsevier GmbH.

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