@article{6443, author = {A. F. G. van der Meer}, title = {FELS, nice toys or efficient tools?}, abstract = {An FEL is an intrinsically interesting device and pushing its performance presents a natural challenge to a physicist. Nonetheless, the main justification for doing FEL research is of course its potential as a unique, versatile source of radiation to be employed for something useful. After 25 years of FEL research, one may wonder how efficient these tools have become. In this paper, I will reflect on this issue from the perspective of 10 years of operation of FELIX as a user facility. (C) 2004 Elsevier B.V. All rights reserved.}, year = {2004}, journal = {Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment}, volume = {528}, number = {1-2}, pages = {8-14}, month = {Aug}, isbn = {0168-9002}, url = {://000223409700004 }, note = {ISI Document Delivery No.: 847QJ}, language = {English}, }