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Changes for page Filter-Units

Last modified by sndueste on 2025-04-23 17:45
From version 23.1
edited by sndueste
on 2021-08-17 16:55
Change comment: There is no comment for this version
To version 27.6
edited by sndueste
on 2025-04-23 14:29
Change comment: Renamed back-links.

Summary

Details

Page properties
Parent
... ... @@ -1,0 +1,1 @@
1 +FS-FLASH USER tmp.Additional helpful things.jddd-linked help pages.WebHome
Content
... ... @@ -1,5 +3,3 @@
1 -
2 -
3 3  {{toc/}}
4 4  
5 5  = Filter control =
... ... @@ -10,10 +10,12 @@
10 10  
11 11  The moving procedure is supervised by a protection system. First of all the fast shutter is closed before moving the filter wheel (to protect the filters during moving) and blocked till the movement is over. Then the fast shutter has to be opened again with the Fast shutter control button. It does not open automatically!
12 12  
13 -In addition the pulse energy and the number of bunches in the FEL is monitored. IF the radiation dose exceeds a certain limit the filters can not be moved into the beam. Then the beam has to be attenuated using the gas attenuator to a range where the filters can be used again. More info: [[JdddFilterProtection>>doc:FLASHUSER.jddd-linked help pages.Filter-Units.Filter protection in jddd.WebHome]]
11 +In addition the pulse energy and the number of bunches in the FEL is monitored. IF the radiation dose exceeds a certain limit the filters can not be moved into the beam. Then the beam has to be attenuated using the gas attenuator to a range where the filters can be used again. More info: [[JdddFilterProtection>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter protection in jddd.WebHome]]
14 14  
15 -Current limits are:  [[image:attach:doselimits.jpg||height="250"]]:
13 +Current limits are: [[image:attach:image2021-11-11_13-46-32.png||height="250"]]
16 16  
15 +(until Nov 2021 we had 300 µJ for single pulse and 2000µJ for the bunch train integral as limit. This turned out to be to much since several filters (mainly Nd and Zr) got damaged in 2020 and 2021) 
16 +
17 17  \\
18 18  
19 19  == Calculation of the transmission ==
... ... @@ -21,7 +21,9 @@
21 21  The shown transmission values for the filters are based on the [[CXRO webpage>>url:http://henke.lbl.gov/optical_constants/filter2.html||shape="rect"]] AND on measurements performed at the PTB (data see below).
22 22  
23 23  {{info}}
24 -The measured transmissions may differ from calculated ones in certain wavelength ranges significantly. Since we do not have measured values for all filters / thicknesses there may be situations where the shown transmission may be e.g. smaller for a thinner filter of the same material (since it was measured) in comparison to a thicker (not measured) one ...
24 +We tried to use the measured transmission where ever we have measured data. The measurement in the end includes e.g. oxide layers that may alter the transmission significantly ( see example for Al below).
25 +
26 +Thus the displayed transmission may be different from the CXRO calculations using the pure filter material (with out oxide layers).
25 25  {{/info}}
26 26  
27 27  \\
... ... @@ -50,649 +50,31 @@
50 50  
51 51  [[image:attach:transmissino calculation.jpg||height="250"]]
52 52  
53 -= More (special) info =
55 += Filter transmission - measurements and oxide layers =
54 54  
55 -== Mounted filters, replacement in N2 box ==
57 +* The transmission data for the transmission calculation in jddd uses combined data from CXRO and the measures transmission from BESSY / PTB.
58 +* Thin oxide layers may alter the transmission significantly. As was found for the thin Al foils a transmission of 6 nm (2x3nm) Al,,2,,O,,3,, fits well with the measured data - at least much better as compared to only using Al without oxide layer.
59 +* [[image:attach:image2021-11-2_14-6-43.png||height="250"]][[image:attach:image2021-11-2_14-6-54.png||height="250"]][[image:attach:image2021-11-2_14-7-1.png||height="250"]]
60 +* similar results are obtained for Si and Zr ... see filter details below
56 56  
57 -* [[Filter History and mounted filters of FLASH1 and FLASH2:>>doc:FLASHUSER.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]] what filter was mounted at which motor position
58 -* [[doc:FLASHUSER.jddd-linked help pages.Filter-Units.Replacement filters in N2 flow box.WebHome]]
62 += More details about damage of filters or oxide layers =
59 59  
60 -== Filter transmission - expert info ==
61 -
62 -* The transmission data for the transmission calculation in jddd uses combined data from CXRO and the measures transmission from BESSY. This is also the reason that for some values there is a deviation from expected scaling (e.g. same material but different thickness) or tabulated values. The calculated data for extrapolating the experimental values  was scaled to fit the experimental values at the crossover
63 -* [[image:attach:2020-09-16 14_51_08-combined filter transmission for server.opju _ - __win.desy.de_home_sndueste_My .png||height="250"]]
64 -* However comparing the transmission data for Al 100 nm and 200 nm for the measured (PTB) and calculated (CXRO) data shows a rather good agreement for 17 nm and shorter WL while at longer WL a systematic difference can be seen. future measurements with the FEL have to be done ... 
65 -* {{view-file att--filename="Al_filters.pdf" height="250"/}}The transmission data can be found at e.g. (depending on the filter wheel) /export/doocs/server/blfilters2_server/data/ as files generated from CXRO. We use the WL range 0.5 nm to 60 nm
66 -* Transmission of filters calculated from CXRO  as pdf for [[FLASH1>>attach:TransmissionFilterwheel_FLASH1.pdf]] and [[FLASH2>>attach:TransmissionFilterwheel_FLASH2.pdf]] filter wheels
67 -* [[attach:AllFiltersPTB.pdf]]: Transmission of filters as measured by PTB as pdf (and here are the [[actual data of the measurements>>attach:DESY_KW17_15_Filter.zip]])
68 -* [[attach:Transmission_PTB_CXRO.pdf]]: Transmission of Nb, Zr, Al, Si Luxel filters measured between 2.5nm and 25nm by the PTB in comparison with CXRO data
69 -* [[Experimental measurements for the transmission>>attach:Mercadier_FLASH_filters.pdf]]: Laurents transmissiont measurements for "Rohringer" Beamtime - shows deviations for Si !
70 -
71 71  \\
72 72  
73 -== Documentation of the filter protection in jddd ==
66 +* [[doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter details.WebHome]]
74 74  
75 -* [[JdddFilterProtection>>doc:FLASHUSER.jddd-linked help pages.Filter-Units.Filter protection in jddd.WebHome]]
76 -
77 77  \\
78 78  
79 -== Data collection of FEL parameters and Filter damage ==
70 += Documentation of the filter protection in jddd =
80 80  
81 -\\
72 +* [[JdddFilterProtection>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter protection in jddd.WebHome]]
82 82  
83 -(% class="wrapped" %)
84 -|(((
85 -Filter material
86 -)))|(((
87 -Thickness[nm]
88 -)))|(((
89 -Wavelength [nm]
90 -)))|(((
91 -pulse energy [µJ]
92 -)))|(((
93 -# of Bunches
94 -)))|(((
95 -Apertures?
96 -)))|(((
97 -Integral dose (mJ)
98 -)))|(((
99 -Filter unit
100 -)))|(((
101 -survived?
102 -)))|(((
103 -date
104 -)))|(((
105 -Comments
106 -)))
107 -|(((
108 -\\
109 -)))|(((
110 -\\
111 -)))|(((
112 -\\
113 -)))|(((
114 -\\
115 -)))|(((
116 -\\
117 -)))|(((
118 -\\
119 -)))|(((
120 -\\
121 -)))|(((
122 -\\
123 -)))|(((
124 -\\
125 -)))|(((
126 -\\
127 -)))|(((
128 -\\
129 -)))
130 -|(((
131 -Al
132 -)))|(((
133 -100
134 -)))|(((
135 -13
136 -)))|(((
137 -300
138 -)))|(((
139 -1
140 -)))|(((
141 -3mm
142 -)))|(((
143 -~~3
144 -)))|(((
145 -BL wheel 2
146 -)))|(((
147 -hours
148 -)))|(((
149 -Sept 2014
150 -)))|(((
151 -Adrians beamtime
152 -)))
153 -|(((
154 -Al
155 -)))|(((
156 -198
157 -)))|(((
158 -13
159 -)))|(((
160 -1.8
161 -)))|(((
162 -401
163 -)))|(((
164 -3mm
165 -)))|(((
166 -~~0.7
167 -)))|(((
168 -BL wheel 2
169 -)))|(((
170 -~~10 minutes
171 -)))|(((
172 -August 2014
173 -)))|(((
174 -only in combination with Nb 385nm on wheel 1, Attenuator with Xe at 5% transmission (0.15mbar), Industry beamtime
175 -)))
176 -|(((
177 -Nb
178 -)))|(((
179 -385
180 -)))|(((
181 -13
182 -)))|(((
183 -1.8
184 -)))|(((
185 -401
186 -)))|(((
187 -3mm
188 -)))|(((
189 -~~0.7
190 -)))|(((
191 -BL wheel 1
192 -)))|(((
193 -~~10 minutes
194 -)))|(((
195 -August 2014
196 -)))|(((
197 -only in combination with Al 198nm on wheel 2, Attenuator with Xe at 5% transmission (0.15mbar), Industry beamtime
198 -)))
199 -|(((
200 -Nb
201 -)))|(((
202 -197
203 -)))|(((
204 -13
205 -)))|(((
206 -2.5
207 -)))|(((
208 -401
209 -)))|(((
210 -3mm
211 -)))|(((
212 -~~1
213 -)))|(((
214 -BL wheel 2
215 -)))|(((
216 -~~10 minutes
217 -)))|(((
218 -August 2014
219 -)))|(((
220 -only in combination with Al 423 nm on wheel 1, Attenuator with Xe at 5% transmission (0.15mbar), Industry beamtime
221 -)))
222 -|(((
223 -Al
224 -)))|(((
225 -423
226 -)))|(((
227 -13
228 -)))|(((
229 -2.5
230 -)))|(((
231 -401
232 -)))|(((
233 -3mm
234 -)))|(((
235 -~~1
236 -)))|(((
237 -BL wheel 2
238 -)))|(((
239 -~~15 minutes
240 -)))|(((
241 -August 2014
242 -)))|(((
243 -only in combination with Al 423nm on wheel 1, Attenuator with Xe at 5% transmission (0.15mbar), Industry beamtime
244 -)))
245 -|(((
246 -Al
247 -)))|(((
248 -101
249 -)))|(((
250 -13
251 -)))|(((
252 -2.5
253 -)))|(((
254 -401
255 -)))|(((
256 -3mm
257 -)))|(((
258 -~~1
259 -)))|(((
260 -BL wheel 2
261 -)))|(((
262 -~~15 minutes
263 -)))|(((
264 -August 2014
265 -)))|(((
266 -only in combination with Al 423nm on wheel 1, Attenuator with Xe at 5% transmission (0.15mbar), Industry beamtime
267 -)))
268 -|(((
269 -Al
270 -)))|(((
271 -298
272 -)))|(((
273 -13
274 -)))|(((
275 -2.5
276 -)))|(((
277 -401
278 -)))|(((
279 -3mm
280 -)))|(((
281 -~~1
282 -)))|(((
283 -BL wheel 2
284 -)))|(((
285 -~~15 minutes
286 -)))|(((
287 -August 2014
288 -)))|(((
289 -only in combination with Al 423nm on wheel 1, Attenuator with Xe at 5% transmission (0.15mbar), Industry beamtime
290 -)))
291 -|(((
292 -C Al C
293 -)))|(((
294 -500
295 -)))|(((
296 -13
297 -)))|(((
298 -2.5
299 -)))|(((
300 -401
301 -)))|(((
302 -3mm
303 -)))|(((
304 -~~1
305 -)))|(((
306 -BL wheel 2
307 -)))|(((
308 -~~15 minutes
309 -)))|(((
310 -August 2014
311 -)))|(((
312 -only in combination with Al 423nm on wheel 1, Attenuator with Xe at 5% transmission (0.15mbar), Industry beamtime
313 -)))
314 -|(((
315 -Al
316 -)))|(((
317 -423
318 -)))|(((
319 -13
320 -)))|(((
321 -2.5
322 -)))|(((
323 -401
324 -)))|(((
325 -3mm
326 -)))|(((
327 -~~1
328 -)))|(((
329 -BL wheel 1
330 -)))|(((
331 -~~1 h
332 -)))|(((
333 -August 2014
334 -)))|(((
335 -Industry beamtime, Attenuator with Xe at 5% transmission (0.15mbar)
336 -)))
337 -|(((
338 -Al
339 -)))|(((
340 -423
341 -)))|(((
342 -13
343 -)))|(((
344 -70
345 -)))|(((
346 -1
347 -)))|(((
348 -3mm
349 -)))|(((
350 -0.07
351 -)))|(((
352 -BL wheel 1
353 -)))|(((
354 -~~1 h
355 -)))|(((
356 -August 2014
357 -)))|(((
358 -Industry beamtime
359 -)))
360 -|(((
361 -Al
362 -)))|(((
363 -193
364 -)))|(((
365 -13
366 -)))|(((
367 -52
368 -)))|(((
369 -1
370 -)))|(((
371 -3mm
372 -)))|(((
373 -0.05
374 -)))|(((
375 -BL wheel 1
376 -)))|(((
377 -~~1 h
378 -)))|(((
379 -August 2014
380 -)))|(((
381 -Industry beamtime
382 -)))
383 -|(((
384 -Al
385 -)))|(((
386 -193
387 -)))|(((
388 -13
389 -)))|(((
390 -50-80
391 -)))|(((
392 -1
393 -)))|(((
394 -3mm, 5mm, 10mm
395 -)))|(((
396 -~~0.1
397 -)))|(((
398 -BL wheel 1
399 -)))|(((
400 -~~30min
401 -)))|(((
402 -August 2014
403 -)))|(((
404 -Industry beamtime
405 -)))
406 -|(((
407 -Si
408 -)))|(((
409 -419
410 -)))|(((
411 -19
412 -)))|(((
413 -15-20
414 -)))|(((
415 -87
416 -)))|(((
417 -3mm
418 -)))|(((
419 -1.3
420 -)))|(((
421 -BL wheel 1
422 -)))|(((
423 -36h
424 -)))|(((
425 -June 2014
426 -)))|(((
427 -(% class="content-wrapper" %)
428 -(((
429 -Moshammer beamtime , ~~ 70% of beam were absorbed! [[http:~~/~~/ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2014/24/13.06&pos=2014-06-13T17:17:44~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2014/24/13.06&pos=2014-06-13T17:17:44||shape="rect"]]
430 -)))
431 -)))
432 -|(((
433 -Al
434 -)))|(((
435 -400
436 -)))|(((
437 -19
438 -)))|(((
439 -15-20
440 -)))|(((
441 -87
442 -)))|(((
443 -3mm
444 -)))|(((
445 -1.3
446 -)))|(((
447 -BL wheel 1
448 -)))|(((
449 -many h
450 -)))|(((
451 -June 2014
452 -)))|(((
453 -(% class="content-wrapper" %)
454 -(((
455 -Moshammer beamtime , ~~ 70% of beam were absorbed! [[http:~~/~~/ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2014/24/13.06&pos=2014-06-13T17:56:57~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2014/24/13.06&pos=2014-06-13T17:56:57||shape="rect"]]
456 -)))
457 -)))
458 -|(((
459 -Zr
460 -)))|(((
461 -200
462 -)))|(((
463 -19
464 -)))|(((
465 -2-3
466 -)))|(((
467 -77
468 -)))|(((
469 -1mm
470 -)))|(((
471 -0.2
472 -)))|(((
473 -BL wheel 1
474 -)))|(((
475 -few h
476 -)))|(((
477 -June 2014
478 -)))|(((
479 -(% class="content-wrapper" %)
480 -(((
481 -Moshammer beamtime [[http:~~/~~/ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2014/23/02.06&pos=2014-06-02T17:24:10~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2014/23/02.06&pos=2014-06-02T17:24:10||shape="rect"]]
482 -)))
483 -)))
484 -|(((
485 -Al
486 -)))|(((
487 -100
488 -)))|(((
489 -13
490 -)))|(((
491 -6-8
492 -)))|(((
493 -15
494 -)))|(((
495 -1mm !
496 -)))|(((
497 -~~ 0.1
498 -)))|(((
499 -BL
500 -)))|(((
501 -short ? - then BROKEN
502 -)))|(((
503 -Jan 2014
504 -)))|(((
505 -(% class="content-wrapper" %)
506 -(((
507 -Chapman beamtime [[http:~~/~~/ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35||shape="rect"]]
508 -)))
509 -)))
510 -|(((
511 -Al
512 -)))|(((
513 -200
514 -)))|(((
515 -4
516 -)))|(((
517 -180
518 -)))|(((
519 -1
520 -)))|(((
521 -none, but 2-3 mm beam in the hall
522 -)))|(((
523 -~~ 0.2
524 -)))|(((
525 -BL
526 -)))|(((
527 -yes, minutes
528 -)))|(((
529 -Dec 2013
530 -)))|(((
531 -(% class="content-wrapper" %)
532 -(((
533 -Chapman beamtime [[http:~~/~~/ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35||shape="rect"]]
534 -)))
535 -)))
536 -|(((
537 -Al
538 -)))|(((
539 -400
540 -)))|(((
541 -4
542 -)))|(((
543 -180
544 -)))|(((
545 -1
546 -)))|(((
547 -none, but 2-3 mm beam in the hall
548 -)))|(((
549 -~~ 0.2
550 -)))|(((
551 -BL
552 -)))|(((
553 -yes, minutes
554 -)))|(((
555 -Dec 2013
556 -)))|(((
557 -(% class="content-wrapper" %)
558 -(((
559 -Chapman beamtime [[http:~~/~~/ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35||shape="rect"]]
560 -)))
561 -)))
562 -|(((
563 -(% class="twikiNewLink" %)Si3N4
564 -)))|(((
565 -350
566 -)))|(((
567 -4.3
568 -)))|(((
569 -180
570 -)))|(((
571 -1
572 -)))|(((
573 -none, but 2-3 mm beam in the hall
574 -)))|(((
575 -~~ 0.2
576 -)))|(((
577 -BL
578 -)))|(((
579 -yes, minutes
580 -)))|(((
581 -Dec 2013
582 -)))|(((
583 -(% class="content-wrapper" %)
584 -(((
585 -Chapman beamtime [[http:~~/~~/ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35||shape="rect"]]
586 -)))
587 -)))
588 -|(((
589 -Al
590 -)))|(((
591 -100
592 -)))|(((
593 -4.3
594 -)))|(((
595 -180
596 -)))|(((
597 -1
598 -)))|(((
599 -none, but 2-3 mm beam in the hall
600 -)))|(((
601 -~~ 0.2
602 -)))|(((
603 -BL
604 -)))|(((
605 -BROKEN
606 -)))|(((
607 -Dec 2013
608 -)))|(((
609 -(% class="content-wrapper" %)
610 -(((
611 -Chapman beamtime [[http:~~/~~/ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35||shape="rect"]]
612 -)))
613 -)))
614 -|(((
615 -Si
616 -)))|(((
617 -220
618 -)))|(((
619 -4.3
620 -)))|(((
621 -180
622 -)))|(((
623 -1
624 -)))|(((
625 -none, but 2-3 mm beam in the hall
626 -)))|(((
627 -~~ 0.2
628 -)))|(((
629 -BL
630 -)))|(((
631 -BROKEN
632 -)))|(((
633 -Dec 2013
634 -)))|(((
635 -(% class="content-wrapper" %)
636 -(((
637 -Chapman beamtime [[http:~~/~~/ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35||shape="rect"]]
638 -)))
639 -)))
640 -|(((
641 -Zr
642 -)))|(((
643 -220
644 -)))|(((
645 -4.3
646 -)))|(((
647 -180
648 -)))|(((
649 -1
650 -)))|(((
651 -none, but 2-3 mm beam in the hall
652 -)))|(((
653 -~~ 0.2
654 -)))|(((
655 -BL
656 -)))|(((
657 -BROKEN
658 -)))|(((
659 -Dec 2013
660 -)))|(((
661 -(% class="content-wrapper" %)
662 -(((
663 -Chapman beamtime [[http:~~/~~/ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2013/03/17.01&pos=2013-01-17T17:58:35||shape="rect"]]
664 -)))
665 -)))
666 -|(((
667 -Al
668 -)))|(((
669 -100
670 -)))|(((
671 -6.8
672 -)))|(((
673 -80
674 -)))|(((
675 -30
676 -)))|(((
677 -3mm
678 -)))|(((
679 -2.4
680 -)))|(((
681 -BL
682 -)))|(((
683 -BROKEN
684 -)))|(((
685 -Mar 2011
686 -)))|(((
687 -(% class="content-wrapper" %)
688 -(((
689 -Chapman beamtime [[http:~~/~~/ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2011/10&pos=2011-03-07T23:15:29~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/external-link.gif~|~|width="13" height="12"~]~]>>url:http://ttfinfo.desy.de/ExpHallelog/show.jsp?dir=/2011/10&pos=2011-03-07T23:15:29||shape="rect"]]
690 -)))
691 -)))
74 += More (special) info =
692 692  
693 -\\
76 +== Mounted filters, replacement in N2 box ==
694 694  
695 -(% class="twistyRememberSetting twistyFirstStartShow twistyTrigger twikiUnvisited twistyInited1" %)[[~[~[image:url:http://hasfweb.desy.de/pub/TWiki/TWikiDocGraphics/toggleclose.gif~]~]>>url:http://hasfweb.desy.de/bin/view/Setup/FilterIssues||shape="rect"]]
78 +* [[Filter History and mounted filters of FLASH1 and FLASH2:>>doc:FS-FLASH USER tmp.jddd-linked help pages.Filter-Units.Filter wheels in FLASH1 and FLASH2.WebHome]] what filter was mounted at which motor position
79 +* [[doc:FLASHUSER.jddd-linked help pages.Filter-Units.Replacement filters in N2 flow box.WebHome]]
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