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ID Date Authorup Type Category Subject
  8416   Thu Apr 4 17:23:05 2013 SteveUpdate40m Upgrading ETMY optical table & enclosure is ready for optics

Quote:

 Enclosure is at the east end. It has it's bottom o-ring in place. It will be ready for optics tomorrow around 5pm

I have to shim out the enclosure, finish leveling the table and cut surgical tubing O-ring for the top.

 

 Glued surgical latex tubing with super glue into O-ring shape. The existing in place tubing K-100, OD 0.125" (actual size 0.140"), wall 0.031", ID 0.062".

I have just found out that tolerances on tubing OD are + - 0.026" by the manufacturer. I'm getting larger tubing for better fit.

The table is ready for optics.

Things left to do:

1, finalize o-ring size  2, finish cable feedthrough  3, finalize window connection 4, IR-Thermashield strips for bridge sides 5, replace bridge support post with solid one

 

  8421   Mon Apr 8 08:05:41 2013 SteveUpdatePSLPMC locked

The PMC locked manually. MC  grabbed lock instantaniously

  8423   Mon Apr 8 16:37:26 2013 SteveUpdate40m UpgradingETMY enclosure wall transmission

 

 Enclosure cover #1 transmission measured  in 1064 nm,  156 mW,  P polarization and beam size ~ 1 mm

As condition:  fully assembled, protective layer removed, tinted- adhesive activated on yellow acrylic on top of each other.

T = 1.2 % in 20 minutes exposure test. This agrees with the test measurement of 6-18-2012

There is a reflected  2-3 cm circular glare that is barely visible on sensor card. It is well below 1 mW level

As we are installing the NPRO with ~350 mW of power we have to address what additional shield should be installed.

The June 2012 test with 1W power burned through of the 3 layer  IR coated films in 3-4 hours.

We 'll use Aluminum shields in the high power path till we come up with better solution.

  8429   Tue Apr 9 07:48:10 2013 SteveUpdatePSLPMC locked

Quote:

The PMC locked manually. MC  grabbed lock instantaniously

 PMC locked

Attachment 1: pmc10d.png
pmc10d.png
  8430   Tue Apr 9 08:37:54 2013 SteveUpdate40m UpgradingEndtable upgrade for auxiliary green laser : TRY temporarily in place

Quote:

The TRY path on the end table is temporarily in place to help IFO locking.
The Y arm transmission was steered to get TRY back on the PD and the camera. I found that TRY is a couple of inches off in yaw at the end table (comparing to the CAD layout and the earlier layout) and I believe it is because of the changes in input pointing.
I've used a Y1 mirror to steer the Y transmission to an R98% BS. The reflected beam falls on PDA520 and the transmitted beam is steered to the camera. The earlier normalization of TRY is no more valid as the power distribution at the PD has changed.

Temporary  acrylic wind guard added between enclosure and ETMY transmission window to help IFO locking

  8435   Wed Apr 10 07:37:33 2013 SteveUpdatePSLPMC locked

Quote:

Quote:

The PMC locked manually. MC  grabbed lock instantaniously

 PMC locked

 PMC locked.

Attachment 1: pmc4d.png
pmc4d.png
  8443   Thu Apr 11 10:15:55 2013 SteveUpdateLockingPRM yaw oplev transferfunction

See   Feb 2012 PRM yaw transferfunctions, also check Valera's modified  side sensor may effect yaw motion

 

  8461   Thu Apr 18 15:08:14 2013 SteveUpdatePEMseismometer isolation kit in place

Quote:

 We got granite bases today from the manufacturer. We plan to set them up on Wednesday, 8 am. Please note, there will be an installation mess at Xend, Yend and corner during ~4 hours. Let us know if you have any objections to do this at this particular time.

Installation locations are specified in elog 8270, scheme attached is valid except for Xend. Instrument will be installed on the place of nitrogen containers.

(  next to the wall at corner sout-east of the south end )

 The carpenter shop finished the installation of the 3 granite bases.Rapid Set Cement All high strength non-shrink grout was used.

 Compressive strength  3000 PSI at 1 hour and 9000 PSI at day 28 The janitor is still cleaning up after them at the south end.

The  soft silicon gas kits are working well with the SS can.  Den is making  the adaptor plate drawing for the feedthrough.

Attachment 1: grouting1.jpg
grouting1.jpg
Attachment 2: grouting2.jpg
grouting2.jpg
Attachment 3: grouting3.jpg
grouting3.jpg
Attachment 4: grouting4.png
grouting4.png
  8472   Mon Apr 22 17:43:09 2013 SteveUpdate40m Upgrading ETMY optical table & enclosure is ready for optics

Quote:

Quote:

 Enclosure is at the east end. It has it's bottom o-ring in place. It will be ready for optics tomorrow around 5pm

I have to shim out the enclosure, finish leveling the table and cut surgical tubing O-ring for the top.

 

 Glued surgical latex tubing with super glue into O-ring shape. The existing in place tubing K-100, OD 0.125" (actual size 0.140"), wall 0.031", ID 0.062".

I have just found out that tolerances on tubing OD are + - 0.026" by the manufacturer. I'm getting larger tubing for better fit.

The table is ready for optics.

Things left to do:

1, finalize o-ring size  2, finish cable feedthrough  3, finalize window connection 4, IR-Thermashield strips for bridge sides 5, replace bridge support post with solid one

 

 I'm working on to improve the quality of the enclosure.

The short comings are: more cable feedthroughs needed, latches to anchor top covers air tight and posts to support bending bridges.

Red triangles are compression latches at 10 places to hold the top air tight on surgical tubing

Green lines represent 4  posts of Al 1" OD to support the covers and maximize their eigenfrequencies.

Black crosses are 4 spring loaded push-bottom quick release pins to anchor the top covers to the bridges. This connection will  not be air tight.

(quarter-turn wing head fastener have the same problem) I'm thinking of some solution to minimize the leak.    

Violet _ steel plate (1" wide, 15" long, 0.125" thick)  between the two posts will anchor the quick release pins and make bridge rigid.

Blue rectangle is an other cable feedthrough exiting on the chamber side.

Planning to substitute window with soft - air tight ( Aluminized thin wall hose )  connection to vacuum view port where white circle is representing the Al adaptor ring.

Updated after Wednesday meeting 4-24-2013

 

Attachment 1: more2.jpg
more2.jpg
  8503   Mon Apr 29 08:22:57 2013 SteveUpdateSAFETYsafety training

 

 Albert, our new undergrad work force received 40m specific- basic safety training last week. Please read and sign 40m procedures booklet.

  8518   Wed May 1 10:42:35 2013 SteveUpdateLSCcleanup

 

 Optics from the car were placed into glass door cabinet E0

  8526   Fri May 3 08:55:55 2013 SteveUpdatePEM3.2 M earthquake
Attachment 1: 3.2eqChannelIland.png
3.2eqChannelIland.png
Attachment 2: 3.2eq.png
3.2eq.png
  8527   Fri May 3 09:17:41 2013 SteveUpdateSUSETMX needs some help
Attachment 1: ETMX3.2eq.png
ETMX3.2eq.png
  8571   Tue May 14 14:24:56 2013 SteveUpdate40m Upgradingenclosure removal

 

 I'm planning to remove the ETMY optical table enclosure and move it over to CES Shop 8am Thursday morning.

We'll install spring loaded lathes, hooks and quick release pins.

The bridge will be reinforced with steel plate to support release pins on posts.

There will be an other cut out for cable feedtrough as it is shown on elog #8472

Let me know if this timing does not fit your work.

  8578   Wed May 15 08:29:28 2013 SteveConfigurationRF Systemfiber protection at splitter box area

 I positioned the fiber loaded protecting tubing and anchored them so they can do their job.

However, the area needs a good clean up.

 

Attachment 1: fiberprotect.jpg
fiberprotect.jpg
  8579   Wed May 15 15:33:49 2013 SteveUpdateGeneralOn-Track QPD

I tested On-Track (from LLO) OT 301  amp with PSM2-10 qpd. It was responding. Jenne will calibrate it.  The 12V DC ps input is unipolar.

The one AC to DC adapter that Jenne tried was broken.

  8590   Thu May 16 08:32:05 2013 SteveUpdate40m upgradingETMY op table disabled

 

All ETMY optical table electronics- lasers-pds turned off, disconnected in order to remove enclosure.

linguaa.jpg

  8595   Fri May 17 15:38:51 2013 SteveUpdate40m upgradingETMY enclosure is on the way back

 

 It  will arrive around 10 am Monday morning.

 

  8606   Tue May 21 17:03:45 2013 SteveUpdateendtable upgradeenclosure tops are sealed

Quote:

 

 I'm planning to remove the ETMY optical table enclosure and move it over to CES Shop 8am Thursday morning.

We'll install spring loaded lathes, hooks and quick release pins.

The bridge will be reinforced with steel plate to support release pins on posts.

There will be an other cut out for cable feedtrough as it is shown on elog #8472

Let me know if this timing does not fit your work.

 The bridge support posts were shimmed today. Surgical tubing 402R - o - rings were glued togeather with " instant krazy glue "

Atm2  Carey CH-3540 latches are compressed ~2.5 mm in the clamped position.

Atm3 is showing the captured quick release pin in the steel reinforced bridge that is supported by the post. It works great. The post screw is sealed by o-ring. The quick-pin is sealed by an epoxy attached copper cap.

Atm4 Enclosure is on it's back. Bottom o-ring can be seen. The hole reinforced bridge structure is visible.

Now I'm working on the window connection to the chamber. I'm very close leak checking this box.

In case of leaking around the top tubing seals we have two options:

a, cut down on the cover rim by 0.040"  or b, increase tubing diameter

Attachment 1: ETMYoptable.jpg
ETMYoptable.jpg
Attachment 2: surgtubclamps.jpg
surgtubclamps.jpg
Attachment 3: quickrelease.jpg
quickrelease.jpg
Attachment 4: reinforcbridge.jpg
reinforcbridge.jpg
  8628   Thu May 23 12:02:48 2013 SteveUpdateendtable upgradeETMY - oplev

 Temporary oplev in place. The spot on the qpd is still big. My two lens solution did not work.

I will finalize optical component position of the oplev after the the arm transmitted and green beam optics in place. They have priority.

 

Attachment 1: ETMYopl.jpg
ETMYopl.jpg
  8655   Thu May 30 11:10:00 2013 SteveUpdateendtable upgradeETMY - oplev

Quote:

 Temporary oplev in place. The spot on the qpd is still big. My two lens solution did not work.

I will finalize optical component position of the oplev after the the arm transmitted and green beam optics in place. They have priority.

 

 Oplev spot size on qpd ~ 1 mm 

PS: I realized it later that the returning beam is going through a lens for TRY. This is a nono.

      This beam path will be relayed again as the TRY, green beam and IP-ang get there place.

Attachment 1: ETMYoplev.jpg
ETMYoplev.jpg
  8664   Mon Jun 3 09:46:40 2013 SteveUpdateVACRGA scan at day 100

 Vacuum normal condition at pumdown day 100

 

Attachment 1: d100Mpd75.png
d100Mpd75.png
Attachment 2: d100Mpd75p.png
d100Mpd75p.png
Attachment 3: badguys.png
badguys.png
  8669   Tue Jun 4 10:44:13 2013 SteveUpdateendtable upgradePI pzt holders are ready

The PI pzt holders are back from the shop. They are numbered 1, 2 & 3 and machined to match.

Tapered black delrin opener is to gauge the gap if it is too small to fit pzt. This is to prevent holder to be opened too much.

Attachment 1: PIpztholders.jpg
PIpztholders.jpg
  8670   Tue Jun 4 10:47:57 2013 SteveUpdatesafetysafety training

Our early bird surf student Gautem has received 40m specific basic safety training today.

  8681   Wed Jun 5 15:48:02 2013 SteveUpdateGeneralfast 2004 qpd

Thank you Ben Abbott forwarding this information:

 QPD Amplifier D990272 https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?.submit=Number&docid=D990272&version= at the X-end.  It plugs into a Generic QPD Interface, D990692, https://dcc.ligo.org/cgi-bin/private/DocDB/ShowDocument?.submit=Number&docid=D990692&version= according to my drawings, that should be in 1x4-2-2A.

Attachment 1: D990272qpd.jpg
D990272qpd.jpg
Attachment 2: interfaceD990692.jpg
interfaceD990692.jpg
  8682   Wed Jun 5 15:55:16 2013 SteveUpdateGeneralProjector - lightbulb ordered

Quote:

Update: We don't have our BIG screen 

There was no light from the projector when I came in this morning. I suspected it might have to do with the lifetime of the bulb. But turning the projector OFF and ON got the projector working....but only for about 10-15 seconds. The display would go OFF after that. I will wait for some additional help to dismount it and check what the problem really is.

 

 

  • Shipping Estimate Friday June 7, 2013 - Monday June 10, 2013
    Delivery Estimate: Wednesday June 12, 2013 - Monday June 17, 2013 by 8:00pm
  • Lampedia Projector Lamp for VIEWSONIC PRO8200 / PRO8300
    Sold by: Lampedia
  8685   Thu Jun 6 09:58:13 2013 SteveUpdateendtable upgradeenclosure to chamber connection

 

 Thin wall connector from McMCarr#55275K25 was tested in 150 mW, 1 mm beam size of 1064 nm  overnight. It did not show any degradation.

Super-Compressible Duct for Air

Hose is made from 0.005" thick, double-ply metalized polyester with a fabric-enclosed steel wire support. 

Atm2, Enclosure viewport adaptor is shown in place of the viewport.

Soft gaskit -   durumeter hardness 10A - McMCarr#9010K51 was added on the 10" od sufaces of conflat and viewport adaptor to insure being air tight.

The duct connector clamped with soft braided elastic " Velstrech" brand loop.

 

Attachment 1: thinwallconnector.jpg
thinwallconnector.jpg
Attachment 2: 06061301.PDF
06061301.PDF 06061301.PDF
  8717   Tue Jun 18 10:37:00 2013 SteveSummaryGeneralnew laser pointers

  Red-green laser pointers added to the depleted stock of 2011

The two pointers output measured 4.4 mW green and 2 mW red

 

  8732   Thu Jun 20 09:33:42 2013 SteveUpdateGeneralcleanup

Office work benches were cleaned up yesterday. Anti-image filter boards were moved to north wall of the control room. Koji's pd- electronics box  placed next to water dispenser.

The removed ETMY optical table: TMC 4' x 2' x  4" with Aluminum enclosure was placed on table in the east arm.

Attachment 1: tmc3x2.jpg
tmc3x2.jpg
  8736   Fri Jun 21 16:30:04 2013 SteveUpdateGeneralCapacitor Inventory

The 3 Panasonic Ceramic Kits Books, 1206 NPO, SMT are well stocked. The 4 th one needs to be refilled at some values.

I labeled them on the cover for fast access. See Atm1

 

The Metalized Polyester Film Book with through holes mount are in good shape also. Atm2

 

The AVX Ceramic 1206,  Garrett cab, range: 1pF - 22 microF 50V...... 67 values

Note here: that the value of dielectric, capacitance / voltage will vary

NPO: 1 pF - 1 nF /  50V .......37 values

X7R : 1 nF -  0.082 microF /  50V,  0.1 microF /  100V.......27 values

Y5V:  4.7 microF / 6.3 V,  10 microF / 10V,  22 microF / 6.3V.........3 values 

 

Attachment 1: CeramicCaps1206NPOsmt.jpg
CeramicCaps1206NPOsmt.jpg
Attachment 2: PolyesterFilmCapThroughHole250VDC.jpg
PolyesterFilmCapThroughHole250VDC.jpg
  8743   Tue Jun 25 10:23:20 2013 SteveUpdatesafetysurf safety training

 Alex Cole and Craig Cahillane received 40m specific,  basic safety training last week.

 

Attachment 1: surfs2014.jpg
surfs2014.jpg
  8763   Thu Jun 27 10:45:41 2013 SteveUpdateGeneral40MARS wireless network problems

Quote:

Quote:

I'm not sure what's going on today but we're seeing ~80% packet loss on the 40MARS wireless network.  This is obviously causing big problems for all of our wirelessly connected machines.  The wired network seems to be fine.

I've tried power cycling the wireless router but it didn't seem to help.  Not sure what's going on, or how it got this way.  Investigating...

 I'm still seeing some problems with this - some laptops are losing and not recovering any connection. What's to be done next? New router?

 We had the same problem yesterday. However the Vacuum Dedicated laptop worked with fewer disconnects. Christian is coming over this after noon to look at this issue.

This happened a few weeks ago and it recovered misteriously. Jamie did not understand it.

  8765   Thu Jun 27 15:58:27 2013 SteveUpdatePEMPSL enclosure particle counts

 

 Particle counts were measured inside the PSL enclosure at 40VAC variac setting.

Directly under HEPAs, on the east half of the optical table : 0.3 micron    20  particles / cu ft,       0.5 micron     0  p / cu ft,      0.7 micron        0 p / cu /ft

Away from the HEPAs, on the west edge of the op table:     0.3 micron   960  particles / cu ft,      0.5 micron    50 p / cu ft,       0.7 micron      20 p / cu ft

We may want to increase the RPM a little bit.

 

Checked our counters against recently calibrated Met One GT-526:

#1 is right on, #2 measured 25% less (it will go for calibration)

 

Flow bench at the south end :   zero particle for all 3 sizes

 

IOO chamber particle logging  measures  0.5 and 1 micron.  Chamber opening limit is set to 10,000 particles max of 0.5 micron

At 10,000 p of 0.5 micron means ~100,000 - 180,000 p of 0.3 micron

We may have to lower the limit.

  8782   Fri Jun 28 11:33:32 2013 SteveUpdate 40MARS wireless network problem

Quote:

I'm not sure what's going on today but we're seeing ~80% packet loss on the 40MARS wireless network.  This is obviously causing big problems for all of our wirelessly connected machines.  The wired network seems to be fine.

I've tried power cycling the wireless router but it didn't seem to help.  Not sure what's going on, or how it got this way.  Investigating...

 Mike and Christian brought over a Mac laptop for surf Alex. 

They power cycled the wireless router of 40Marsh and labtops are working.  Seeing 75-80% signals on all 3 Dell lab top sisters at both end of the lab

  8785   Fri Jun 28 14:57:15 2013 SteveUpdateGeneralclosing lab doors

I found the south end emergency doors not latched completely. There was a ~ 3/8" vertical gap from top to bottom.

Please pull or push  doors harder if they not catch fully.

  8813   Tue Jul 9 17:03:06 2013 SteveUpdateGreen Lockingfiber layed for Y arm

Alex, Gautam and Steve,

Single mode fiber 50m long is layed out into cable tray that is attached to the beam tube of the Y arm.

It goes from ETMY to PSL enclosure. It is protected at both ends with " clear- pvc, slit corrugated loom tubing " 1.5" ID

The fiber is not protected between 1Y1 and 1Y4

Attachment 1: fromETMYtowardPSL.jpg
fromETMYtowardPSL.jpg
Attachment 2: fibreETMYtoPSL50m.jpg
fibreETMYtoPSL50m.jpg
Attachment 3: PSLfiberfromETMY.jpg
PSLfiberfromETMY.jpg
  8822   Wed Jul 10 14:49:00 2013 SteveUpdateGreen Locking more fiber protective tubing layed

Quote:

Craig, Gautam and Steve,

Single mode fiber 50m long is layed out into cable tray that is attached to the beam tube of the Y arm.

It goes from ETMY to PSL enclosure. It is protected at both ends with " clear- nylon slit corrugated loom tubing " 1.5" ID

The fiber is not protected between 1Y1 and 1Y4

 Installed 0.5" ID 10 ft long protective tubing at the PSL end of the  ETMY fiber this morning. Here I had to cable tie a bunch of cables at the east side of the PSL enclosure.

They were hanging off the table blocking space were the sliding doors move.

 At the ETMX end of the X-arm fiber received the same protective tubing.

Attachment 1: fibreETMXprotectedendOnly.jpg
fibreETMXprotectedendOnly.jpg
  8827   Thu Jul 11 09:15:10 2013 SteveUpdateendtable upgradeETMY optable grounded

ETMY optical table top was grounded to the ETMY chamber through 1 Mohms this morning. I  also strain releifed relieved a few cables that were pulling on components directly.

  8828   Thu Jul 11 09:24:03 2013 SteveUpdateGeneralthere should be nothing left on optable tops

There are 4 oscilloscopes left on the AP optical table top.... It's only 25 lbs... Do not leave anything on the optical table tops!

  8834   Fri Jul 12 09:00:10 2013 SteveUpdateGeneral Halogen illumination cables disconnected

Alex and Steve,

Old halogen chamber illuminator cabling disconnected and potenciometer board removed at 1Y1 in order to give room for pd calibration fibre set up.

Attachment 1: 1Y1oldilluminatersDisconnected.jpg
1Y1oldilluminatersDisconnected.jpg
  8847   Mon Jul 15 14:12:15 2013 SteveUpdateVACRGA scan at day 144

 Pumpdown 75, vacuum normal condition at day 144

 

Attachment 1: pd75mRGA144d.png
pd75mRGA144d.png
Attachment 2: pd75m144d.png
pd75m144d.png
  8856   Tue Jul 16 13:48:26 2013 SteveUpdatePEMcranes cleaned

Keven and Steve,

The 3 cranes tested and  wiped off as preparation for upcoming vent.

  8904   Tue Jul 23 08:21:31 2013 SteveUpdateVACVent has started

 

Thanks for the good preparation.  IFO pressure P1=20 Torr

Attachment 1: beforVent.png
beforVent.png
Attachment 2: startVent.png
startVent.png
  8907   Tue Jul 23 14:00:03 2013 SteveUpdateVACthe vent is completed

 The 40m IFO has reached  atmospher in 5 hours. It is ready to open chamber condition. The RGA is pumped with the maglev.

P1 pirani gauge is contact dependent as you see it on the linear plot It will be replaced during this vent.

The venting speed was 2-4 Torr / min

Atm2 shows how the BS is sensing the venting air cylinder changes. 

The 4th cylinder of instrument  grade air  bump is overlapping with our janitor working at the BS chamber.

 

 

Attachment 1: Atm.png
Atm.png
Attachment 2: 5cyl.png
5cyl.png
Attachment 3: ventSum1d.png
ventSum1d.png
  8915   Wed Jul 24 10:35:41 2013 SteveUpdateVACBS, ITMY doors are removed

Quote:

We will open the BS and ITMY doors first thing tomorrow morning. I plan to try to be in around 9 am. The first order of business will be to flip the folding mirrors that are not currently flipped (SR2, SR3, PR3).

 Jenne, Annalisa & Steve

Attachment 1: beforeDoorsOff.png
beforeDoorsOff.png
Attachment 2: particlecount10d.png
particlecount10d.png
  8933   Mon Jul 29 16:04:40 2013 SteveUpdateVACAC removed

 Manasa, Eric, Evan, Koji and Steve,

Access connector removed in order to complete alignment. Light aluminum with acetate windows AC installed.

 

 

Attachment 1: acout.png
acout.png
Attachment 2: AlAcACa.jpg
AlAcACa.jpg
Attachment 3: AlAcACb.jpg
AlAcACb.jpg
  8945   Wed Jul 31 09:51:43 2013 SteveUpdatesafetySujan receives safety training

Sujan got 40m specific basic safety training this morning.

Attachment 1: IMG_0031.JPG
IMG_0031.JPG
  8946   Wed Jul 31 10:27:00 2013 SteveUpdateVACinstrument grade air is discontinoued

We have been using Air Liquide Instrument Grade Air for venting the 40m vacuum envelope. It is no longer available.

The replacement is Alphagas 1, total hydrocarbon <0.1% ppm

LINK TO Alphagaz

 

A- A+ Imprimer Partager

ALPHAGAZ™ Specifications

ALPHAGAZ™ range of Pure Gases for Analysis: two purity levels tailored to cover all your analytical needs.

Because each analytical application is sensitive to critical impurities that can affect your results, tests in our research center and analyzer manufacturers' studies confirm that the main impurities are moisture, oxygen and hydrocarbons.

Based on these critical impurities, Air Liquide has developed ALPHAGAZ™ brand with a Maximum Impurity Level (H2O, O2, CnHm).

  • The Maximum Impurity Level is the same across the whole product range. This constitutes a guarantee of quality with regard to major critical impurities and contamination tracers. ALPHAGAZ™ 2 offers an even greater guarantee in terms of purity (CO, CO2, H2).
  • The Minimum Total Purity is a prerequisite for product quality, but we do not stop there: Air Liquide selects and controls its gas sources by defining specifications regarding impurities that are critical for your analysis or application.

 

ALPHAGAZ™ 1 ALPHAGAZ™ 1 ALPHAGAZ™ 2 ALPHAGAZ™ 2 ALPHAGAZ™ AUTO IV ALPHAGAZ™ CO2 SFC
He, N2, H2,
Ar, O2
Air He, N2, H2,
Ar, O2
Air Air*, N2, O2 CO2
Specifications (ppm vol):
H2O < 3 ppm
O2 < 2 ppm
CnHm < 0.5 ppm
H2O< 3 ppm
CnHm< 0.1 ppm
CO2 < 1 ppm
CO < 1 ppm
H2O < 0.5 ppm
O2 < 0.1 ppm
CO2 < 0.1 ppm
CO < 0.1 ppm
CnHm < 0.1 ppm
H2 < 0.1 ppm
H2O < 0,5 ppm
CnHm < 50 ppb
CO2 < 0,1 ppm
CO < 0,1 ppm
NOx < 10 ppb *
SO2 < 10 ppb*
CnHm < 0.2 ppm
CO2 < 0.5 ppm
CO < 0.5 ppm
NO/NOx < 0.1 ppm
H2O < 5 ppm
O2 < 2 ppm
CnHm < 2 ppm
NVOC* < 2 ppm
CO < 5 ppm
NO + NO2 < 2 ppm
S Total < 1 ppm
H2 < 0.5 ppm
  20 ± 1 % O2 (Europe)
21 ± 1% O2 (North America)
  20,9 ± 1 % O2
*: Detection limit
*20 ± 1 % O2 *NVOC: Non Volatile Organic Compounds
Minimum Total Purity

 

 

  8953   Thu Aug 1 16:03:52 2013 SteveUpdateGeneralreopen BS & IOO

Quote:

[Koji, Manasa]

We missed to check that we had the green transmitted to the PSL after flipping the SRC and PRC folding mirrors.
There is no green transmission reaching the PSL even after locking the arms to green.

We should fix this tomorrow. The BS heavy door should come off.

Steve! Do not start pump down tomorrow !

 We closed the chambers last night with heavy doors and reopened it today.

Attachment 1: IOOnorth.jpg
IOOnorth.jpg
  8963   Mon Aug 5 10:50:48 2013 SteveUpdateVACRGA background

 RGA background at day 12 of this vent . The maglev is pumping on the rga through VM2

 

Attachment 1: v75bgMd12.png
v75bgMd12.png
ELOG V3.1.3-