 Wed Feb 4 17:27:55 2015, Anonymous, , ,
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| This is reachable and change-able via outside Internet |
Fri Jan 11 06:56:01 2013, Jessica Tomlinson, Other, General, multiplicities, hit patterns and good hits in an event 
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I have attached a pdf of a series of slides with some multiplicity and hit pattern plots on, also a list of cuts. As well as this I looked at how many
'good hits' (explained in pdf) I am getting per event.
Before Christmas I found that the code was not clearing the raw arrays read in by MIDAS and so unless a new piece of data filled the array channel |
 Fri Jan 11 09:48:58 2013, Tom Davinson, Other, General, Re: multiplicities, hit patterns and good hits in an event
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Jessica
Tomlinson wrote:
I have attached |
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Tue Dec 4 05:40:10 2012, Jessica Tomlinson, Other, Other, analysis - single strip E vs t 6x
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I have attached some single strip energy vs time plots to show that the structure seen in the collective E vs t plots is in each strip.
Attachments 1 and 2 show two different strips in S2-2 with no cuts. You can see that the 3 loci are different to one another in the single strips
as well as in the combined S2-2 E vs t plot shown in attachment 3. Attachement 3 is plotted after applying the following cuts: equal energy in the front |
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Fri Nov 16 07:23:26 2012, Jessica Tomlinson, Other, General, S2-1 plot that would fit on previous elog
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Attachment 1 shows S2-1 energy vs time with a gate on energy in S2-2 being greater than 9MeV i.e. See previous elog also posted today for explanation.
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Fri Nov 16 07:12:32 2012, Jessica Tomlinson, Other, General, 4.11 MeV/u analysis 6x
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I have sorted the 4.11MeV/u data runs (the ones which had the common stop mode on the TDCs) and applied the following cuts:
There must be a hit registered in each side of the detectors.
equal energy must be deposited in both sides of the detectors.
Low energy cut is applied to each detector.
Must have a hit in the TDC for the front strips.
Must have multiplicity |
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Mon Sep 24 07:16:18 2012, Jessica Tomlinson, Other, Other, Analysis update
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Energy vs Time plots
I updated the monte carlo written by Alex to include time and also created new SRIM tables for 250 Torr rather than |
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Wed Jul 18 08:29:03 2012, Jessica Tomlinson, Other, General, Analysis update
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Energy calibration for S2-2 was done using the pulser data (set 6 of the pulser runs) to calculate the offsets and alpha run R186 to calculate
the gains and constant. For S2-1 pulser walkthrough 6 was also used to calculate the offsets and the gains calculated using run 31 which is 21Ne beam scattering
from Au/C target. The constants were then calculated by fitting a least squares fit to the alpha peaks from run 186 and the gold scattering peak from run |
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Tue Jun 21 02:58:31 2011, Jamie Brown, , , Run Books 13 and 14
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| Attached. Book 13 is split into 4 sections as otherwise the file is too big for the elog to accept. |
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Mon Jun 20 05:58:21 2011, Jamie Brown, , , Run log
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| Attached is a spreadsheet summarizing all the run information from the experiment. |
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Sat May 28 10:07:44 2011, Jamie Brown, and Mike Bentley, , , Plan for last day
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1) PD run with gas (250Torr) - done
2) Pump down to 50 Torr - done
3) PD run - done |
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Sat May 28 07:46:09 2011, Lars Martin, Routine, General,
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Beam current dropped to 85 epA at the start of the shift, operator checked for reasons and decided to change
stripper foil. That brought the current back up, but it started decreasing again, so from run to run slits were
gradually opened further to keep FC0 current at about 100 epA.
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Fri May 27 23:13:01 2011, Alex Rojas, Routine, General, Shift summary
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No major problems presented, A pluser walk was performed at the begining of the shift run161 S2-1 front, run162 S2-2 front, run163 S2-1 back and run165
S2-2 back.
Runs 166, 168, 169 are void due to bad scaler reading |
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Fri May 27 14:24:00 2011, Tom Davinson, , , S1287 data transfer
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S1287 data files R1_*.gz to R100_*.gz transferred from directory
tuda2:/data2/data/S1287 to directory tuda3:/data3/data/S1287
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Thu May 26 23:57:34 2011, Derek, Routine, General, Friday 00:00 - 08:00 Summary
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Sarah informed me that Jamie was performing the sorting and saving of spectra differently and didn't know what exactly to do so I will not be performing
any sorting.
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Thu May 26 23:46:40 2011, Sarah and Brian, Routine, General, Thu 16:00-00:00 summary
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Run139
Started 19:05:03 |
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Thu May 26 12:53:48 2011, Jamie Brown, , , H2 fill and vent procedures
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Please note that these procedures are not perfect and other small operations not listed may need to be carried out. Some mistakes may still exist in
these procedures which could introduce significant risk if not spotted and corrected during the process. These should only be carried out by people confident
they understand the system and the purpose of each step, giving due consideration to each step to ensure it is appropriate and safe. |
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Thu May 26 02:54:10 2011, Derek and Naomi, Routine, General, Thu 0-8am shift summary
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For run 123:
Beam outage for ~15 min but not stopping run. |
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Thu May 26 00:15:18 2011, Hicham and Sarah, Routine, , End of run summary
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still running at 3.98 MeV/u
19:08
S2-1 had tripped off due to leakge current going above 8uA |
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Wed May 25 22:45:42 2011, Jamie Brown, , , Leakage current in S2-1
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At approximately 7pm, noted that trigger rate in S2-1 had dropped by factor of ~20. Detector had tripped off due to leakage current reaching 8uA - spotting
this was delayed as camera (or web-browser) monitoring currents had frozen. Current trip point has been increased to 12uA, and the beam intensity lowered
to try to preserve the detector through out the night. |
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Wed May 25 18:05:55 2011, Mike Bentley, Routine, General, Report on day shift and changed energy - now at 3.98 MeV/u
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All ran smoothly.
As a test, ran for a short period at 1200 midday to run without S2-2 in the trigger. Finished that at 1339.
After discussion with Alison, Alex, Brian, Chris - we decided to change energy to 3.98 MeV/u. This started at 1340. |
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Wed May 25 07:09:17 2011, Brian, Routine, General, End of run summary (yes, a bit early, but done all I can think of!)
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Running status
Everything seems to be running OK. ADC and TDC spectra look OK. Chamber pressure has stabalised. Detector leakages stabalised
Beam now up to 60pnA with trigger rate about 4,000/s and accepts about 3,000/s |
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Wed May 25 03:15:44 2011, Brian, Routine, General, Start of run summary and TDC problems
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Summary at start of run
Read through the runbook and end of run summar and the situation appears to be:
1. The check of the tune showed it was OK, although a bit of beam (or halo) clipping 4mm collimator |
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Tue May 24 23:59:16 2011, Jennifer Fallis, Lars Martin, Routine, General, Shift summary
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Buncher problem was resolved around 22:00 (driver module needed to be replaced).
Checked current on FC0 and trigger rate, around 4000 presented. We then started a run, only got 20 acquired,
stoped and restarted a run, then all relevant numbers seemed normal.
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Tue May 24 20:45:12 2011, Mike Bentley, Other, General, Update for during the day 24th May, wednesday
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Update:
W decided at 8.00 to stop, check the tune, retune and get back going. This has nearly, finished but it is a very long process indeed - note for
future - this takes AT LEAST 12 hours, if one is systematic about it. |
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Tue May 24 08:18:23 2011, Mike Bentley, Routine, General, end of shift summary
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We have been running smoothly all night. Only problem is that the DAQ occasionally does not start properly after a stop-go. The dead-time goes
to nearly 100%. This happened twice in the night,. and a second stop-go did the trick. Needs looking at.
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Tue May 24 01:47:17 2011, Anonymous, , , Shift schedule, as of 1am Tuesday 24th
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Mon May 23 15:58:30 2011, Mike Bentley, Routine, General, End of Shift summary
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OK - summary of events during this shift.
1.TDCs. We have been sorting offline, and we have now established that between run 66 and run 79, the TDC mode was incorrectly set (not in common |
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Tue May 24 01:16:37 2011, Tom Davinson, Routine, General, Re: End of Shift summary
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1.TDCs. We have been sorting offline, and we have now established that between run 66 and run 79, the TDC mode
was incorrectly set (not in common stop mode) after a DAQ crash causing broad loci in the E vs T spectra and
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Tue May 24 00:01:03 2011, Oliver and Hicham, Routine, , end of shift summary
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Things have been running smoothly from 4 pm to midnight.
Reading in FC0 = 120-130 epA
Total trigger (accepted trigger) = 7500 (4000) Hz |
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Mon May 23 09:59:23 2011, Mike Bentley, Routine, General, End/Dtart of Run Summary (BRF/MAB)
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Ran all night OK, currently 14epA, H2 stable, DAQ stable
ISSUES:
1. Analysis of S4200 in offline sort lead to conclusion that specttrum is dominated by protons, 8MeV punchthrough visible??.Not many events at |
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Mon May 23 02:16:32 2011, Jamie Brown, , , End of run summary
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Plan for shift was to increase trigger thresholds on S2-1 and S2-2 to cut out the low energy "stuff" which is dominating our trigger rate,
and preventing us from increasing the beam current. S2-1 thresholds were at 10mV and S2-2 at 25 and 30mV.
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Mon May 23 02:12:14 2011, Brian, Routine, , Start of Run summary
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Handover from last shift was...
1. Running at 4.11 MeV/u at about 15enA (5+)
2. Would like to take more beam but already at situation where deadtime about 50%. They have been raising thresholds on the inner strips |
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Sun May 22 11:45:03 2011, Tom Davinson, , , 4.11MeV/u 21Ne(5+)
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Sat May 21 18:25:36 2011, Jamie Brown, , , Beam spot
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Fri May 20 05:47:08 2011, Tom Davinson, , , 3.25MeV/u 21Ne(5+)
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Wed May 18 09:09:02 2011, Alison Laird, , , Status update
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Wednesday morning:
4 new windows were tested last night. 2 very good.
Now venting to install and test Faraday cup, install and test camera. |
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Wed May 18 08:58:53 2011, Alex Murphy, , , Foil energy losses
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I've analysed data from runs 4 to 12, which were the alpha irradiations
of PD1 and PD3 through the foils.
Time, 'target', which PD is being irradiated. |
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Wed May 18 08:54:08 2011, Alex Murphy, , , Photodiode data from target thickness measurements
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| In attachment are the peak position in the photodiodes (with high gain setting) for the target thickness measurements. |
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Tue May 17 12:32:13 2011, Jamie Brown, , , Thick carbon target
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The thick carbon target, to be used for background runs for the thick CH2 measurement was supplied by Marek.
He measured it to be 120um thick (with a micrometer), and says it's low density carbon (1.03g/cm3).
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Mon May 16 21:14:19 2011, Jamie Brown, , , Broken solder on PD2
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| As you can see... |
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Sun May 15 13:07:12 2011, JB, , , W detector V-I curve
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York W detector 2635-19
1037um |
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Wed May 11 17:59:12 2011, JB, , , Re-entrant flange alignment
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Alignments checks revealed that downstream end of TUDA was ~1mm off (can't remember which way).
Re-entrant flange (window end) found to be ~5mm too low and ~2mm to the left. Checked upstream end of chamber and was ok.
Removed bellows etc. and re-entrant flange, replaced with re-entrant flange bolts only figure tight. Tighten bolts from inside chamber whilst checking |
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Thu May 12 03:04:44 2011, Tom Davinson, , , Re: Re-entrant flange alignment
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> Alignments checks revealed that downstream end of
> TUDA was ~1mm off (can't remember which way).
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Sat May 7 17:29:13 2011, JB, , , Window leak tests on TUDA
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Attached plot shows rate of pressure increase in ~2l volume upstream of TUDA with Ni window #2 installed on reentrant flange. Comparison between
a)pumping out TUDA and 2l volume, and
b) filling TUDA with ~340mbar of He and pumping out 2l volume. |
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Fri May 6 15:08:00 2011, JB, , , New TUDA EPICS layout
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Fri May 6 06:03:00 2011, Tom Davinson, , , Sort programs, spectra titles & calibration procedure
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A summary of online sort programs can be found at:
~/S1287/sort/README
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Thu May 5 11:31:13 2011, JB, , , Tom's ToDo List
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Version 2 of ...
- re-test
chamber/coolant loop with vacuum cycle - done
- install MSL Type W preamp - done
- to adjust position of support ring, temporarily loosen |
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Sun Apr 17 09:47:04 2011, Tom Davinson, , , Sunday 17 April
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Continuation of yesterday's test with c. 300mBar of He
in the TUDA chamber.
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Sat Apr 16 09:31:56 2011, Tom Davinson, , , Saturday 16 April
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Continuation of yesterday's test with c. 300mBar of He
in the TUDA chamber.
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Fri Apr 15 11:00:17 2011, Tom Davinson, , , Friday 15 April
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11.15 See attachment 1 for overnight EPICS log of TUDA2.CG5
Downstream flange *not* secured by four bolts
Current pressure 0.97Torr - rate of increase ~0.2 Torr/5h
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Thu Apr 14 10:06:34 2011, Tom Davinson, , , Thursday 14 April
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10.02 See attachment 1 for overnight EPICS log of TUDA2.CG5
Downstream flange secured by four bolts
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Wed Apr 13 09:37:51 2011, Tom Davinson, , , Wednesday 13 April
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09.20 TUDA2.PNG5 1.04E-06Torr
See attachments 1 & 2 for EPICS log of pump down and overnight
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Wed Apr 13 03:55:21 2011, Jamie, , , Safety Report
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attached
note. s2 position in fig. 1 is wrong, should be 360mm. |
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Wed Apr 13 03:43:42 2011, Jamie, , , Ni window leak tests 1
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2um x 8 mm Ni windows leaked tested on TUDA gas cell. With window placed on the outside of the cell, cell was evacuated and pressure monitored with time,
i.e. 1atm differential air pressure. Comparison to leak rate with blank flange also do.
Tests were performed in order: Ni, 30 minuets pumping, Ni again, blank, Ni third time. |
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Tue Apr 12 11:21:38 2011, Tom Davinson, , , Tuesday 12 April
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The TUDA @ ISAC-II grounding test was successfully completed this am
per work permit 2011-04-12-2.
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Mon Apr 11 18:39:17 2011, Tom Davinson, , , Monday 11 April
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TUDA was successfully re-installed on SEBT1 by LB, TD, AML and PM.
Alignment checked by pillar mounted telescope downstream of HERACLES
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Mon Apr 11 14:57:08 2011, Tom Davinson, , , SEBT1 & HERACLES wipe tests
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Work permit (2011-4-11-3) was requested to vent SEBT1 upstream of TUDA chamber
and HERACLES to permit line-of-sight for alignment of TUDA chamber. Note that
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Sat Apr 9 14:57:30 2011, Tom Davinson, , , MIDAS DAQ configuration 11x
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tuda2 (by TUDA chamber, SEBT1) was powered off on arrival
- this may have been due to a previous power outage between
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Sat Apr 9 11:35:14 2011, Tom Davinson, , , TUDA configuration & setup
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Nominal detector configuration for S1287 is as follows:
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Mon Apr 4 01:34:54 2011, Jamie Brown, Routine, General, Proposal
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| See attached. |