30 Aug
2012
30 Aug
'12
8:02 a.m.
Hi,
All data has gone out over SPTR and we are fully caught up. Might take a
few hours to download it to the Harvard server.
Cheers,
Steffen
On 2012-08-29 20:35, Steffen Richter (BICEP2) wrote:
Hi,
Although we haven't received any notification, data seems to be going
out again. Currently data starting 8/27 is queued. I'll keep putting
on some extra files until we have caught up.
Cheers,
Steffen
On 2012-08-29 11:22, Steffen Richter (BICEP2) wrote:
Hi,
On 2012-08-29 01:32, John Kovac wrote:
Randol/all,
I expect return of the SPTR link will happen very soon. I have been
in touch with Steff, John Carlstrom, and Derek on this and Derek has
machined a replacement waveguide part. Last I heard (> 36h ago,
before I left China) a test of the system was imminent.
Steff: I suspect there may be a large enough data backlog that it
will take multiple passes to catch up. Probably best to start with
the most recent data, if possible.
Yes, that is the plan. I have been rotating
data in and out of the
SPTR server in anticipation of a fix. When I spoke to Jeremy the
other day, he indicated that today might be the day for a test at least.
Cheers,
Steffen
cheers,
John
On 8/28/12 9:18 AM, Randol Aikin wrote:
Hi Steff,
If the return of the Ku band isn't imminent, as you said in an
earlier email, we should probably work on getting data quality checks
happening at pole. Let me know how you would like to proceed - I
don't think there is much harm in waiting a few more days to see if
the data transfer is restored. If it's going to be much more than
that, I can help you get the reduc plots working at pole.
Thanks much, Randol
On Aug 28, 2012, at 8:22 AM, Steffen Richter (BICEP2) wrote:
> Hi All,
>
> Observing: ---------- 120827 09:12:25 - still running *
> 9_CMB_36b_dk113_015.sc
>
> 120827 09:06:30 - 120827 09:07:55 * mce_autotune.sch * MASD
> restart, DSP driver reload & mce_reset_clean, GCP restart after
> running schedule.
>
> 120827 04:39:37 - 120827 07:36:57 *
> starpoint_pole_bicep_winter.sch * Tilts: az 0° 180° x -8.904
> -9.377 y 9.646 10.448
>
> 120827 03:44:20 - 120827 03:49:56 * do_cycle.sch * dk=0 mark OK *
> cleaned GS, boot, UFB * Membran 0.10/0.40
>
> 120827 03:25:24 - 120827 03:31:03 * do_cycle.sch * Fridge cycle
> process died
>
> 120824 09:21:03 - 120827 03:25:24 * 9_CMB_36b_dk068_015.sch * MCE
> error @ 20120825 06:16:12:
>
> /home/bicep/gcp/control/../masd/specific/scripts/mce_fast_pipe:
> line 74: 50000000 / Reply does not match command. / 60 : syntax
> error: invalid arithmetic operator (error token is ". / 60 ")
> /home/bicep/gcp/control/../masd/specific/scripts/mce_fast_pipe:
> line 77: / 140 : syntax error: operand expected (error token is "/
> 140 ")
>
> * Power outage starting @ 120824 16:13:31, lasting 10-15 minutes.
> Kept running on UPS.
>
> 120824 09:18:30 - 120824 09:19:55 * mce_autotune.sch * ran again by
> accident * MASD restart, DSP driver reload & mce_reset_clean after
> running schedule.
>
> 120824 09:15:37 - 120824 09:17:01 * mce_autotune.sch * MASD
> restart, DSP driver reload & mce_reset_clean, GCP restart after
> running schedule.
>
> 120824 03:52:21 - 120824 03:57:59 * do_cycle.sch * Tilts: az 0°
> 180° x -8.904 -9.432 y 9.778 10.338 * dk=0 mark OK *
> cleaned GS,
> boot, UFB * Membran 0.10/0.40
>
> 120821 13:59:12 - 120824 03:37:13 * 9_CMB_36a_dk293_015b.sch
>
> 120821 09:36:34 - 120821 13:57:14 * 9_CMB_36a_dk293_015.sch * Page
> for MCE error @ 20120821 13:50:46. Error from MCE command @ 2012
> 13:47:44:
>
> /usr/mce/mce_script//script/mce_run: line 133: 31949 Segmentation
> fault mce_cmd -q -o / $lock_opts -X
> "acq_config${acq_config_suffix} $filename rc$rc" -X "acq_go
> $numpts"
>
> * Aborted schedule * stop MASD, mce_reset_clean, reload dsp driver,
> mce_reset_clean, start MASD
>
>
> Telescope: ---------- - One pointing schedule - Temperature
> problems in DSL sorted. Load leveler room fan hasn't come on again
> - 10-15 minute power outage. Didn't affect us other than crane
> heater turning off and cryo monitoring computer requiring twiddling
> with the serial ports - One non-fatal and on fatal MCE error that
> required mce software reset and a schedule restart, thus losing one
> scan set - One fridge cycle process died
>
> Weather -------- - Mixed, but mostly fine
>
> Cryogenics: -----------
>
> * Did the last complete transfer out of Simon. Considering the
> amount of LHe we have I suggest not doing a partial transfer but to
> fill from Theo instead and boil off the remaining liquid in Simon
> and compress the gas into the half rack. Any comments on that
> welcome.
>
> * Continue to not pressurize the Wessingtons w/ GHe.
>
> * Tracking spreadsheet at
>
http://bicep.rc.fas.harvard.edu/bicep2/south_pole_helium_usage/Summer_2011_…
>
>
>
>
* Kathleen's Cryo Sitrep:
>
> LHe: • Approximately5400 liters of useable LHe remain in the
> Wessington dewars. • Approximately 250 liters of LHe were
> delivered
> to BICEP2. • Based on a historical consumption rate of 35.7
> liters/day, LHe supplies are expected to be exhausted by January
> 2013
>
> GHe: • Out of 16 storage tanks for gaseous helium: 6 tanks are at
> 17.2 MPa (2500 psi), one tank is at 13.8 MPa (2000 psi), two tanks
> are at 10.3 MPa (1500 psi), one tanks is at 7.6 MPa (1100 psi), one
> tank is at 3.4 MPa (500psi), two tanks are at 1.4 MPa (200 psi),
> two tanks are at 1.0 MPa (150 psi), and one tank is at 0 MPa (0
> psi). • Vent GHe from the LHe transfer was compressed into the
> storage tanks.
>
>
> LN2: • The liquid nitrogen plant tuned off all week •
> Approximately
> 250 liters of LN2 are currently stockpiled on station.
>
>
> Analysis/software/computers: ---------------------------- - Updated
> firewall and cryo monitoring computer for upcoming pen test. -
> TDRSS Ku band still out, so no data. Waveguide has been machined by
> Derek, just waiting for approval from Denver, possibly tomorrow.
>
> Cheers, Steffen
>
>
>
>
>
>
>