2020-05-28

• 10:00 am in chamber
  • S1600806 in CR1
• 10:05 am roughing pumps on
• 10:15 am turbo pump CR1-4 on

2020-06-02

• 10:15 am in chamber
  • S1600801 in CR1
  • S1600802 in CR2
• 10:20 am roughing pumps on
• 10:30 am turbo pump CR1-4 on

2020-06-05

• 6:50 pm in chamber
  • S1600803 in CR1
  • GaAs in CR2
• 6:55 pm roughing pumps on
• 7:05 pm turbo pump CR1-4 on

2020-06-09

• 11:00 am in chamber
  • GaAs in CR1
  • S1600805 in CR2
• 11:04 am roughing pumps on
• 11:15 am turbo pump CR1-4 on

2020-06-15

• 7:32 pm in chamber
  • S1600803 in CR1
  • GaAs in CR2
• 7:36 pm roughing pumps on
• 7:46 pm turbo pump CR1-4 on

2020-06-16

• 3:42 pm in chamber
  • S1600805 in CR1
• 3:45 pm roughing pumps on
• 3:55 pm turbo pump CR1-4 on

2020-06-18

• 5:45 pm in chamber
  • S1600806 in CR1
• 5:50 pm roughing pumps on
• 6:00 pm turbo pump CR1-4 on

2020-06-23

• 4:20 pm in chamber
  • S1600806 in CR1
• 4:21 pm roughing pumps on
• 4:31 pm turbo pump CR1-4 on

2020-06-24

• 2:26 pm in chamber
  • S1600805 in CR1
  • S1600806 in CR1
• 2:27 pm roughing pumps on
• 2:37 pm turbo pump CR1-4 on

2020-06-25

• 8:47 am in chamber
  • S1600803 in CR1
  • S1600805 in CR2
  • S1600806 in CR3
• 8:49 am roughing pumps on
• 9:00 am turbo pump CR1-4 on

2020-07-01

• 1:42 pm in chamber
  • S1600803 in CR1
• 1:43 pm roughing pumps on
• 1:53 pm turbo pump CR1-4 on

2020-07-02

• 2:41 pm in chamber
  • S1600794 in CR1
  • S1600795 in CR2
  • S1600796 in CR3
  • S1600797 in CR4
• 2:42 pm roughing pump on
• 2:52 pm turbo pump on

2020-07-02

• 3:39 pm in chamber
  • S1600809 in CR1
  • S1600810 in CR2
  • S1600811 in CR3
  • S1600812 in CR4
• 3:40 pm roughing pump on
• 3:50 pm turbo pump on

2017-04-07

• 2:12pm in chamber, pumps on
  • S1600525 in CR1
  • S1600526 in CR2
  • S1600527 in CR3
  • S1500528 in CR4
• Excitations

  • Quiet time before excitation: 1175653360
    Excitation broadband: 1175653395
    Quiet time after excitation: 1175653460

  • Quiet time before excitation: 1175660690
    Excitation broadband: 1175660725
    Quiet time after excitation: 1175660790

  • Quiet time before excitation: 1175668021
    Excitation broadband: 1175668056
    Quiet time after excitation: 1175668121

  • Quiet time before excitation: 1175675351
    Excitation broadband: 1175675386
    Quiet time after excitation: 1175675451

  • Quiet time before excitation: 1175682681
    Excitation broadband: 1175682717
    Quiet time after excitation: 1175682782

  • Quiet time before excitation: 1175690012
    Excitation broadband: 1175690047
    Quiet time after excitation: 1175690112

  • Quiet time before excitation: 1175697342
    Excitation broadband: 1175697377
    Quiet time after excitation: 1175697442

  • Quiet time before excitation: 1175704672
    Excitation broadband: 1175704707
    Quiet time after excitation: 1175704772

2017-04-10

• 11:19am, valve closed, pumps off

Cleaned the chamber in the washing machine at 40m and started 48 baking at 120 C

Some progress on the cleam room: bar fixed to the wall, some more structure built, filters in place. We had to (literally) work around a corner of the low ceiling that we haven't noticed before. More contruction will follow tomorrow. We also had to order some additional parts (more extrusions, brackets, screws, etc...) 

This morning we installed the clean room curtains and washed them. It turns out that the air filters are supposed to be powered at 277V (?) instead of 115V. So right now the flux is quite low. We are looking into the problem: either replace them with 115V modules or install a small transformer.

We also installed the vacuum chamber on the table and connected all the pumps and gauges. There are no leaks and we could pump down easily the empty chamber. We left for lunch when the pressure was at a few 1e-6 Tor and still going down.

Annealing run (449-453) on 3" wafers - Crime 11/01/2016 https://dcc.ligo.org/T1600507

Annealing run (466-471) on 3" wafers - Crime 11/10/2016

https://dcc.ligo.org/LIGO-T1600524

Annealing run (472-477) on 3" wafers - Crime 11/11/2016 https://dcc.ligo.org/T1600527

Cleaning and baking (200 C air foe SS and 120 for Al) parts for the new vacuum chamber

Fixed the 307 gauge controller (a missing contact on the rair panel). The low pressure gauge was connected to 1G port and has measured 1.7E-6 torr. We are not sure since how long the turbo was operating (no vacuum logger yet).

Installed a gate valve between the roughing and tubbo pump. See below a pump down curve. The convection gauge is not calibrated. the turbo started at 14th min (at about 3 torr)

At 5pm the pressure was 6.5e-6 torr.

Checked again at:

• 9am, pressure was 2e-6 torr
• 11:30am, pressure was 1.5e-6 torr
• 5pm, pressure was 1.4e-6 torr

Please see prosidures for pumping down and venting with air for the test vacuum chamber here https://dcc.ligo.org/T1600304

Ordered the clean room (hardware+hepa filters) and vacuum gauges

Annealing run (447-448) on 3" wafers - Crime 10/27/2016 https://dcc.ligo.org/T1600485-v1

Annealing run (454-459) on 3" wafers - Crime 11/02/2016 https://dcc.ligo.org/LIGO-T1600510

Annealing run (460-465) on 3" wafers - Crime 11/04/2016 https://dcc.ligo.org/T1600513-x0

Microscope inspection of samples:

S1600487  https://dcc.ligo.org/S1600487-v7

S1600438 https://dcc.ligo.org/S1600438

Started annealing run Annealing run (489-490) on 3" wafers - Crime 01/18/2017 https://dcc.ligo.org/T1700027 using new hardware

The new chamber was build. The first attempt to pump down was unsuccessful because of dislocated lid. After the lit was placed properly, the chamber was pumped down to 0.1 torr within 8 min. In future a sky hook will be used to help placing the lid properly. The clamps should not be placed on the lid before the roughing pump turned on.

The turbo pump controller failed. Error code 698 – call the vendor.

Turbo pump controller (new chamber) was configured. Need to reduce the frequency or setup a standby mode. First pump down: E-7 range reached within about an hour. See plot: blue - old crime chamber, pink - new crime chamber.

 Started Annealing run (491-496) on 3" wafers - Crime 01/20/2017 https://dcc.ligo.org/LIGO-T1700036 Will be done by Monday

Started an annealing run https://dcc.ligo.org/LIGO-T1700271

Will be ready by Friday morning

Started annealing run https://dcc.ligo.org/T1700293

Will be ready by June 28th afternoon

2018-04-04

• 16:10am in chamber
  • S1600551 in CR1
  • S1600552 in CR2
  • S1600554 in CR3
  • S1600555 in CR4
• 16:30 roughing pump on
• 16:40 turbo pump on

2018-04-09

• 3:30 pm in chamber
  • S1800634 in CR1
• 3:30 pm roughing pump on
• 3:45 pm turbo pump on

2018-05-01

• 16:10 pm in chamber
  • S1800516 in CR0
• 16:20 pm roughing pump on
• 16:40 pm turbo pump on

2018-05-02

• 10:05 am in chamber
  • S1800520 in CR0
• 10:06 am roughing pump on
• 10:20 am  turbo pump on

2018-05-02

• 17:37 added ND because QPD was oversaturated. Repeating the measurement without venting
  • S1800520 in CR0

  2018-05-04

• 02:21 pm in chamber:
  • AK_01 in CR1
  • AK_03 in CR3
• 02:25 pm roughing pump on
• 02:44 pm turbo pump on

• 03:30 pm in chamber:
  • S1800516 in CR0
• 03: 35 pm roughing pump on
• 03:42 turbo pump on

2018-05-09

• 01:57 pm in chamber:
  • S1800515 in CR0
• 01:58 pm roughing pump on
• 14:05  turbo pump on

2018-04-04

• 12:09 pm in chamber
  • S1600593 in CR1
  • S1600594 in CR2
  • S1600595 in CR3
  • S1600596 in CR4
• 12:00 pm roughing pump on
• 12:12 pm turbo pump on

   

• 12:30 pm in chamber
  • S1800519 in CR0
• 12:31 pm roughing pump on
• 12:50 pm turbo pump on

• 02:27 pm in chamber
  • S1600597 in CR1
  • S1600598 in CR2
  • S1600599 in CR3
  • S1600600 in CR4
• 02:27 pm roughing pump on
• 02:35 pm turbo pump on

• 02:40 pm in chamber
  • S1800516 in CR0
• 02:40 pm roughing pump on
• 02:54 pm turbo pump on

• 01:41 pm in chamber
  • S1800520 in CR0
• 01:41 pm roughing pump on
• 01:59 pm turbo pump on

• 03:10 pm in chamber
  • S1600587 in CR1
  • S1600588 in CR2
• 03:10 pm roughing pump on
• 03:24 pm turbo pump on

• 16:57 in chamber
  • S1600528 in CR1
  • S1600531 in CR2
  • S1600543 in CR3
  • S1600544 in CR4
• 16:57 roughing pump on
• 17:06 turbo pump on

• 11:00 in chamber
  • S1600609in CR1
  • S1600611 in CR2
  • S1600612 in CR3
  • S1600613 in CR4
• 11:15 roughing pump on
• 11:26 turbo pump on

• 09:04 in chamber
  • S1600587 in CR1
  • S1600588 in CR2
  • S1600614 in CR3
• 09.15 roughing pump on
• 09:20 turbo pump on

• 16:39 in chamber
  • S1600526 in CR1
  • S1600553 in CR2
  • S1600557 in CR3
  • S1600558 in CR4
• 16:39 roughing pump on
• 16:46 turbo pump on