Category:Stereoscan - Revision history

73.129.195.174: update.

2018-08-26T17:50:23Z

update.

← Older revision		Revision as of 17:50, 26 August 2018
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	=Current Status=		=Current Status=

	~~Powers up until reporting "Beam Fail," so it won't image.~~

	Roughing pump works, turbo spins up to full speed for a while but then slows down. The vacuum controls operate but don't light up as expected, and the pressure readout is not showing a reading. The console turns on and produces video output with the correct data overlay. The filament control reads "bad filament," despite the filament continuity being OK. There is an interlock between the pressure gauge and console that may be keeping the filament off. We'll need to verify the pressure gauge output and see how to trigger that interlock.		Roughing pump works, turbo spins up to full speed for a while but then slows down. The vacuum controls operate but don't light up as expected, and the pressure readout is not showing a reading. The console turns on and produces video output with the correct data overlay. The filament control reads "bad filament," despite the filament continuity being OK. There is an interlock between the pressure gauge and console that may be keeping the filament off. We'll need to verify the pressure gauge output and see how to trigger that interlock.

	We received and installed an MKS Micropiriani 925 vacuum gauge that measures vacuum up to atmosphere. After pumping down, we bottom out at .34 torr. There is a gross leak in the tube on the side of the machine. we are now reverse engineering the electronics~~, while~~ we ~~determine~~ the ~~source of~~ the ~~small vacuum leak~~, and ~~repair~~ the ~~damaged seal~~.		We received and installed an MKS Micropiriani 925 vacuum gauge that measures vacuum up to atmosphere. After pumping down, we bottom out at .34 torr. There is a gross leak in the tube on the side of the machine. we are now reverse engineering the electronics. we have replaced the seals on the up-tube, and are working on controlling the column with a microcontroller, rather than the giant desk-sized console.

	See [[Stereoscan_Operators_Log]] for details.		See [[Stereoscan_Operators_Log]] for details.

96.88.198.77: /* Documentation */ Updated SEM

2018-07-31T01:49:44Z

Documentation: Updated SEM

← Older revision		Revision as of 01:49, 31 July 2018
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	=Documentation=		=Documentation=
			* A suspected leak between the main imaging chamber and the top of the electron gun cylinder is preventing the chamber from reaching pressures low enough to sustain a proper beam. The plumbing connecting the two consists of two elbow brackets. The top and bottom of the long elbow bracket use 2-1/4" diameter black rubber (Viton?) gaskets/O-rings. The bottom elbow bracket uses a 2-3/4" gasket to couple to the chamber proper, and has an adapter between 2-3/8" and the 2-1/4" at the bottom of the long elbow bracket. These are compression-style fittings; the rubber is compressed between two metal pieces and completes the seal.

			[Image of Vacuum Bracket](https://i.imgur.com/3k8zrL5.png)

	== Manuals and Images ==		== Manuals and Images ==

173.75.15.103: /* Current Status */ -- new low.

2017-11-25T18:02:10Z

Current Status: -- new low.

← Older revision		Revision as of 18:02, 25 November 2017
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	Roughing pump works, turbo spins up to full speed for a while but then slows down. The vacuum controls operate but don't light up as expected, and the pressure readout is not showing a reading. The console turns on and produces video output with the correct data overlay. The filament control reads "bad filament," despite the filament continuity being OK. There is an interlock between the pressure gauge and console that may be keeping the filament off. We'll need to verify the pressure gauge output and see how to trigger that interlock.		Roughing pump works, turbo spins up to full speed for a while but then slows down. The vacuum controls operate but don't light up as expected, and the pressure readout is not showing a reading. The console turns on and produces video output with the correct data overlay. The filament control reads "bad filament," despite the filament continuity being OK. There is an interlock between the pressure gauge and console that may be keeping the filament off. We'll need to verify the pressure gauge output and see how to trigger that interlock.

	We received and installed an MKS Micropiriani 925 vacuum gauge that measures vacuum up to atmosphere. After pumping down, we bottom out at 4.7 torr. we are now reverse engineering the electronics, while we determine the source of the vacuum leak.		We received and installed an MKS Micropiriani 925 vacuum gauge that measures vacuum up to atmosphere. After pumping down, we bottom out at .34 torr. There is a gross leak in the tube on the side of the machine. we are now reverse engineering the electronics, while we determine the source of the small vacuum leak, and repair the damaged seal.

	See [[Stereoscan_Operators_Log]] for details.		See [[Stereoscan_Operators_Log]] for details.

73.129.195.174: bllah!

2017-11-16T03:44:12Z

bllah!

← Older revision		Revision as of 03:44, 16 November 2017
Line 10:		Line 10:
	Roughing pump works, turbo spins up to full speed for a while but then slows down. The vacuum controls operate but don't light up as expected, and the pressure readout is not showing a reading. The console turns on and produces video output with the correct data overlay. The filament control reads "bad filament," despite the filament continuity being OK. There is an interlock between the pressure gauge and console that may be keeping the filament off. We'll need to verify the pressure gauge output and see how to trigger that interlock.		Roughing pump works, turbo spins up to full speed for a while but then slows down. The vacuum controls operate but don't light up as expected, and the pressure readout is not showing a reading. The console turns on and produces video output with the correct data overlay. The filament control reads "bad filament," despite the filament continuity being OK. There is an interlock between the pressure gauge and console that may be keeping the filament off. We'll need to verify the pressure gauge output and see how to trigger that interlock.

	We received and installed an MKS Micropiriani 925 vacuum gauge that measures vacuum up to atmosphere. ~~Next: Pump~~ down the ~~chamber and see what~~ the ~~pressure is, locate any leaks and address them~~.		We received and installed an MKS Micropiriani 925 vacuum gauge that measures vacuum up to atmosphere. After pumping down, we bottom out at 4.7 torr. we are now reverse engineering the electronics, while we determine the source of the vacuum leak.

	See [[Stereoscan_Operators_Log]] for details.		See [[Stereoscan_Operators_Log]] for details.

Ubuntourist: Added vacuum gauge manual

2017-11-10T02:07:13Z

Added vacuum gauge manual

← Older revision		Revision as of 02:07, 10 November 2017
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	* [[:File:Stereoscan_Student_Guide.pdf\|Stereoscan Student Guide]]		* [[:File:Stereoscan_Student_Guide.pdf\|Stereoscan Student Guide]]
	* Vacuum gauge: Edwards Penning CP25-k: http://www.idealvac.com/files/manuals/Edwards_CP25K_Cold_Cathode_Gauge_Sensor_Manual.pdf		* Vacuum gauge: Edwards Penning CP25-k: http://www.idealvac.com/files/manuals/Edwards_CP25K_Cold_Cathode_Gauge_Sensor_Manual.pdf
			* [https://www.mksinst.com/Docs/R/925man-revh.pdf 925 MicroPirani (TM) Vacuum Pressure Transducer RS232 / 485 / Display Operation and Installation Manual]
	* Roughing Pump: Edwards E2M-12 255 LPM two stage oil filled rotating vane pump [[File:Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf]]		* Roughing Pump: Edwards E2M-12 255 LPM two stage oil filled rotating vane pump [[File:Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf]]
	* Turbo Pump: Pfeiffer Balzers TPH 190		* Turbo Pump: Pfeiffer Balzers TPH 190

73.129.195.174: use archive.org.

2017-11-06T02:32:04Z

use archive.org.

← Older revision		Revision as of 02:32, 6 November 2017
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	== Manuals and Images ==		== Manuals and Images ==
			* the web archive's copy of RIT's [[https://web.archive.org/web/20050221031305/www.rit.edu/~bekpph/sem/S200.html\|Stereoscan 200 Operating Instructions]]
	* [[:File:Stereoscan_200_Operating_Instructions.pdf\|Stereoscan 200 Operating Instructions]]		* [[:File:Stereoscan_200_Operating_Instructions.pdf\|Stereoscan 200 Operating Instructions]]
	* [[:File:Stereoscan_Student_Guide.pdf\|Stereoscan Student Guide]]		* [[:File:Stereoscan_Student_Guide.pdf\|Stereoscan Student Guide]]

73.129.195.174: add myself.

2017-08-23T23:56:04Z

add myself.

← Older revision		Revision as of 23:56, 23 August 2017
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	=Contacts=		=Contacts=

	We~~'ll~~ have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.		We have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

	[[User:Mirage335\|Mirage335]] ([[User talk:Mirage335\|talk]]) Custom electronic control replacement circuitry.		[[User:Mirage335\|Mirage335]] ([[User talk:Mirage335\|talk]]) Custom electronic control replacement circuitry.

	[[User:~~Plasma~~\|~~Plasma~~]] ~~Dan K.~~, ~~plasma~~ on IRC. SEM ~~information, documentation,~~ repair ~~information, problems~~		[[User:Juri\|Juri_]] Julia Longtin, Juri_ on IRC. SEM repair project.

96.88.198.77: /* Current Status */ gauge

2017-02-24T05:31:55Z

Current Status: gauge

← Older revision		Revision as of 05:31, 24 February 2017
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	=Current Status=		=Current Status=

	~~Cleaning and assessment in progress~~.		Powers up until reporting "Beam Fail," so it won't image.

	~~July 18:~~ Roughing pump works, turbo spins up to full speed. The vacuum controls operate but don't light up as expected, and the pressure readout is not showing a reading. The console turns on and produces video output with the correct data overlay. The filament control reads "bad filament," despite the filament continuity being OK. There is an interlock between the pressure gauge and console that may be keeping the filament off. We'll need to verify the pressure gauge output and see how to trigger that interlock. We ~~are currently waiting for~~ MKS ~~to deliver on our order of a MicroPiriani~~ 925 vacuum gauge, ~~expected now in January 2017~~.		Roughing pump works, turbo spins up to full speed for a while but then slows down. The vacuum controls operate but don't light up as expected, and the pressure readout is not showing a reading. The console turns on and produces video output with the correct data overlay. The filament control reads "bad filament," despite the filament continuity being OK. There is an interlock between the pressure gauge and console that may be keeping the filament off. We'll need to verify the pressure gauge output and see how to trigger that interlock.

			We received and installed an MKS Micropiriani 925 vacuum gauge that measures vacuum up to atmosphere. Next: Pump down the chamber and see what the pressure is, locate any leaks and address them.

	See [[Stereoscan_Operators_Log]] for details.		See [[Stereoscan_Operators_Log]] for details.

Summakor: gauge on order

2016-12-16T03:04:30Z

gauge on order

← Older revision		Revision as of 03:04, 16 December 2016
Line 8:		Line 8:
	Cleaning and assessment in progress.		Cleaning and assessment in progress.

	July 18: Roughing pump works, turbo spins up to full speed. The vacuum controls operate but don't light up as expected, and the pressure readout is not showing a reading. The console turns on and produces video output with the correct data overlay. The filament control reads "bad filament," despite the filament continuity being OK. There is an interlock between the pressure gauge and console that may be keeping the filament off. We'll need to verify the pressure gauge output and see how to trigger that interlock.		July 18: Roughing pump works, turbo spins up to full speed. The vacuum controls operate but don't light up as expected, and the pressure readout is not showing a reading. The console turns on and produces video output with the correct data overlay. The filament control reads "bad filament," despite the filament continuity being OK. There is an interlock between the pressure gauge and console that may be keeping the filament off. We'll need to verify the pressure gauge output and see how to trigger that interlock. We are currently waiting for MKS to deliver on our order of a MicroPiriani 925 vacuum gauge, expected now in January 2017.

	See [[Stereoscan_Operators_Log]] for details.		See [[Stereoscan_Operators_Log]] for details.

Ewaldo: Added Pfeiffer Balzers TCP 300 Controller

2015-08-26T05:27:00Z

Added Pfeiffer Balzers TCP 300 Controller

← Older revision		Revision as of 05:27, 26 August 2015
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	::View of pump 2 (connector side) [[Media:PfeifferTHP190_2.gif]]		::View of pump 2 (connector side) [[Media:PfeifferTHP190_2.gif]]
	::View of pump 3 (other side) [[Media:PfeifferTHP190_3.gif]]		::View of pump 3 (other side) [[Media:PfeifferTHP190_3.gif]]
			* Turbo Pump Controller: [[:File:Pfeiffer_Balzers_TCP-300_Controller.pdf\|Pfeiffer Balzers TCP 300 Controller]]

	== Original ==		== Original ==