MIT microwiggler for free electron laser applications
- Massachusetts Inst. of Tech., Cambridge, MA (United States)
- Brookhaven National Lab., Upton, NY (United States)
A microwiggler-based FEL permits operation at shorter wavelengths with a reduction in the size and cost of the device. The MIT microwiggler is a pulsed ferromagnetic-core electromagnet with 70 periods of 8.8 mm each which generates an on-axis peak magnetic field of 4.2 kG. The pulse repetition rate is 0.5 Hz with FWHM 0.5 msec. The microwiggler is characterized by extensive tunability. We employed a novel tuning regimen through which the rms spread in peak amplitudes was reduced to 0.08 % the lowest ever achieved in a sub-cm period magnetic field. The microwiggler is a serviceable scientific apparatus: spontaneous emission has been observed for wavelengths of 700--800 nm using a 40 MeV beam from the Accerator Test Facility LINAC at BNL.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 91975
- Report Number(s):
- BNL--61957; CONF-950512--266; ON: DE95015023
- Country of Publication:
- United States
- Language:
- English
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