Micro-Channel Plates

Ben Reed — Wed, 20 May 2026 21:02:42 GMT

← Older revision		Revision as of 14:02, 20 May 2026
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	* [[File:VV52A.jpg\|thumb\|VV52A under final slit box.]]Close DRA:BV52.		* [[File:VV52A.jpg\|thumb\|VV52A under final slit box.]]Close DRA:BV52.
	* Turn off DRA:IG52 ion guage.		* Turn off DRA:IG52 ion guage.
	* Turn off DRA:TP52 turbo pump and allow the pump to spin down. Otherwise, the pump could be damaged severely. To tell that DRA:TP52 has spun down, ~~DRA:CG52 and DRA:CG52C will equilibrate (+/- some offset) and~~ you ~~will be able to physically~~ feel that ~~the turbo~~ is ~~not~~ spinning. This takes approx. 1 hr, but it is important to do so to avoid severely damaging the turbo.		* Turn off DRA:TP52 turbo pump and allow the pump to spin down. Otherwise, the pump could be damaged severely. To tell that DRA:TP52 has spun down, check that you can no longer feel the pump vibrating and on the controller that it is no longer spinning. This takes approx. 1 hr, but it is important to do so to avoid severely damaging the turbo.
	* Ensure all the DRAGON vent valves are closed. DRA:VNT1 located on the "Differential Pumping" EPICS page should be checked. Other vent vales are labelled VV## where ## is the number.		* Ensure all the DRAGON vent valves are closed. DRA:VNT1 located on the "Differential Pumping" EPICS page should be checked. Other vent vales are labelled VV## where ## is the number.
	* Ensure the manually adjustable vent valve (labelled "VV52A", see Fig.2) physically located near VV52 is fully closed before proceeding.		* Ensure the manually adjustable vent valve (labelled "VV52A", see Fig.2) physically located near VV52 is fully closed before proceeding.

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Micro-Channel Plates