Utilities
Utilities@GAPH
==================================================- AxVU100 Photodiode efficiency:
Nph/sec≈2.26 x 1013 I[μA]/hv[eV]
==================================================Beamline: insertion device
| source: | Undulator; 36 periods L0=125 mm; B0max= 0.456 T; Kmax= 5.3; Ptotmax=0.95 kW |
| polarisation: | linear |
| energy range: | 13-900 eV |
Gap can vary between 31 and 120 mm. It can be remotely set up by users (Gap < 100 mm) and there is the possibility to change GAP continuosly as function of photon wavelenght. Moreover, at the high values of K parameter (low gap) the higher energy part of the spectrum is that of a wiggler.
Beamline: monochromator
The monochromator hosts 5 different gratings to attain the maximum resolving power in the entire energy range from 13 to 900 eV. In the lower energy 1st order radiation from G1 and G6 can be used, depending on the experimental requirement for highest resolution (G1) or higher order rejection (indeed G6 has a MgF2 coating). G1 can be also used effectively in 2nd order in the 50-90 eV energy range.
| grating | energy range | Max resolving power | flux(ph/sec/100mA)@selected energies |
| G#1 | 13-60 | >25000 | 6.3·1010 @ 45 eV |
| G#1 2nd order | 40-90 | >28000 |
2.2·1011 @ 65 eV |
| G#3 | 80-180 | >10000 | 1.5·1011 @ 86 eV |
| G#4 | 160-430 |
12200 >12000 |
1.5·1010 @ 245 eV 1.1·1010 @ 401 eV |
| G#5 | 360-900 | 10000 |
2.0·1010 @ 540eV 3·109 @ 680eV |
| G#6 | 13-25 | 10000 | 5·1011 @ 20 eV |
| grating | lines/mm | radius[cm] | energy range |
| G#1 | 400 | 1700 |
13-60 1st order 40-90 2nd order |
| G#3 | 1200 | 1700 | 80-180 |
| G#4 | 1200 | 3200 | 160-430 |
| G#5 | 1200 | 4600 | 360-900 |
| G#6 | 140 | 1700 | 13-25 |
Ultima modifica il Venerdì, 23 Novembre 2018 07:40
