 Mon Mar 27 03:29:05 2017, OH, TD, DK, CG, Monday 27 March 15x
|
11:28 Biases and leakages okm (see attachment 1)
14:00 Removed jumpers on cooling rack D. Noise was around 50 channels worse (FWHM of pulser peak) for all
backside channels.
14:30 Jumpers back on cooling rack D.
16.45 Screenshots of layouts 1-4, 7-8 illustrating state of play
attachment 2 - FEE64 # 1-24 Rate
3 - " HitRate
4 - p+n 1.8.L
5 - n+n 1.8.L
6 & 7 - p+n 1.8.W
8 & 9 - n+n 1.8.W
17.30 Attachments 10-14 statistics good events, sync, pause, resume, correlation L
17.36 Attachment 15 - FEE64 temperatures OK |
|
Mon Mar 27 03:28:53 2017, DK, TD, JA, Clock settings at the waveform generator stage
|
Clock settings for this experiment are slightly different than in the previous case.
Below are strictly the settings for the waveform generator itself.
Sent to AIDA side: 0 to 5 V amplitude, 50 MHz frequency
Sent to BRIKEN side: 0 to 5 V amplitude, 25 MHz frequency
Thus, both teams are taking TTL-type signals. However, the BRIKEN one goes to the Philips module which essentially converts it straight away to NIM.
There may have been a slight misunderstanding yesterday about the setup, but finally the waveform signal going to BRIKEN was checked and there was no problem. So we don't make
any changes (e.g. changing the waveform generator to a NIM-type output). |
|
Sun Mar 26 03:53:43 2017, CG, OH, Sunday 26th March
|
10.30 Left DAQ running overnight to look for alphas in DSSDs.
DSSD bias still ok @ 23.3oC (see att. 1).
FEE temps ok.
Slow and fast comparator thresholds set to 0x60 (~1Mev).
No obvious alphas (see att. 2+3).
11.00 Looked at waveforms and see long ripple (period ~10us) in a lot of the FEEs, e.g. nnaida15 in attachment 4. |
|
Thu Mar 23 10:56:29 2017, CG, OH, Thursday 23rd March - DSSD replacement + move 7x
|
10.00 Investigating DSSD2 (MSL BB18-1000 3058-9) missing channels, found broken bond wires on rear side (~1/4).
Replaced with 3058-3.
Stack order now:
| 3058-4
beam | 3058-3
| 2998-23
| 3058-5
| 3058-6
V 3058-7
12.00 All detectors, including the new replacement bias correctly (see att. 1).
14.00 Shunji has mentioned moving AIDA+BRIKEN forward by ~1m due to concerns about focusing the accurately at such a rearward position.
The afternoon was spent removing the EURICA rails to enable the push forward of AIDA+BRIKEN.
18.00 The DAQ was set running with the new detector included. All system checks passed apart from nnaida19 ADC calibration.
Pulser peak widths are mostly ~70-90ch for all FEEs. This is similar to Tuesday for the n-side FEEs (att. 2-4) and an improvement for the p-side FEEs (att. 5-7).
Having said that, some spectra show peaks with shoulders or tails and a few feature multiple discreet peaks.
We will look at this over the next couple of days, depending on when the final move/alignment of AIDA+BRIKEN is completed.
Complete table of pulser FWHM
nnaida# | Pulser FWHM (ch) | Comments
1 | 64 |
2 | 168 | Peak has shoulder
3 | 77 |
4 | 74 |
5 | 79 | Shoulder
6 | 86 | Shoulder
7 | 80 |
8 | 78 |
9 | 68 |
10 | 70 |
11 | 80 |
12 | 85 |
13 | 70 |
14 | 65 |
15 | 92 | Wide secondary peak in ASICs 1&4 of FWHM ~900ch @ 45k. Only few counts high (~1% height of pulser peak). Noise 10x height of pulser.
16 | 99 | Noise peak ~10x height of pulser peak.
17 | 70 | Low E tail.
18 | 75 |
19 | 96 |
20 | 83 |
21 | 68 | Additional peaks either side of pulser: approx. relative heights > (1/30) (1) (1/100)
22 | 69 |
23 | 108 | Noise peak ~10x height of pulser peak.
24 | 110 | Noise peak ~10x height of pulser peak. |
|
Tue Mar 21 08:04:43 2017, CG, OH, Tuesday 21 March - AIDA checks
|
10.00 Powered system on and biased.
Bias voltages and leakage currents ok (see att. 1). Ambient temp @23.1oC.
14.00 Shunji wanted to do some checks with the LN2 fill.
Seems to perhaps be a problem with unshielded cables to the valve switches.
With control box, outlet valve and cables to all valves behind LN2 tank, AIDA survives LN2 fill.
Parts ordered to facilitate moving of components behind the LN2 tank, away from AIDA.
Will carry out further tests once these have been fitted.
17.00 FWHM seem reasonable and similar to Dec 2016.
n-side FEEs see average pulser FWHM of ~70-80ch. nnaida19 noticeably worse @ ~150ch. (att. 2+3)
p-side FEEs worse with average pulser FWHM of ~200ch. nnaida13 worst of these, showing non-Gaussian peaks
with widths @ ~300ch. (att. 4+5)
Will not attempt to solve this now as they must all be disconnected to sort problem with nnaida1. |
|
Thu Feb 2 13:44:02 2017, OH, T9 Test Bench
|
T9 test setup at Daresbury was powered up and noise levels were checked using a pulser peak.
A 1V peak was used. For most channels this corresponded to a peak position at around +-11000 from the zero point at 9000.
An example of this is shown in attachment 1 showing the peak in nnaider 11, ASIC 4, ADC 11.
It was also observed that for both nnaider 11 and 12 (FEE modules corresponding to negative signals) that channels 2, 56 and 59 were not contributing to the rate. See attachment 2.
Upon investigating the missing channels ADC spectra the only apparent issue appeared in nnaida 11 ASIC 4, ADC 8. Which is plot 4.7.L. Here we see the peak much higher coming in at around channel 63000. See attachment 3.
The remaining missing channels in the rate plot appear to have normal amplitudes with maybe slightly higher noise. FWHM of ~60 as oppposed to ~18. Discussed more below.
Also done was a noise measurement across the all the ASICs. To do this an ADC was chosen belonging to each of the ASICs and the pulser peak location and FWHM was recorded. The reaults are as shown below.
FEE# ASIC/ADC Centroid Location FWHM
11 1.8 42951 19.38
11 2.8 41012 17.48
11 3.8 41929 20.01
11 4.8 41302 17.88
12 1.8 41830 17.38
12 2.8 41119 16.01
12 3.8 42669 18.30
12 4.8 41811 15.21
13 1.8 24329 15.05
13 2.8 24034 13.64
13 3.8 24209 15.79
13 4.8 24607 13.29
14 1.8 24650 16.19
14 2.8 24618 14.12
14 3.8 23934 15.04
14 4.8 22584 14.36
14 4.8 22584 14.36
It was seen that the noise was fairly low which is to be expected as there were no dtectors connected and only a short length of kapton cables connected to the board. |
|
Wed Feb 1 16:54:40 2017, CG, NP1306 run summary
|
| |
|
Wed Jan 18 14:16:47 2017, Patrick Coleman-Smith, Repaired Modules returning to RIKEN
|
Five modules are being returned to RIKEN after repair.
The MAC addresses are :-
00:04:a3:2a:ED:8f
00:04:a3:2a:f6:d4
00:04:a3:2b:22:6e
00:04:a3:2b:33:15
00:04:a3:2a:d0:1a
00:04:a3:2b:33:0c
00:04:a3:2a:b6:45
00:04:a3:2a:b2:b2
00:04:a3:2b:09:da
00:04:a3:2b:11:c5
|
|
Tue Dec 6 06:38:46 2016, TD, Updated Patrick, CAEN N1419 HV output common mode noise 9x
|
There appears to be significant common mode noise on the output of the
CAEN N1419 4 Ch Reversible 500 V/200 ľA NIM HV Power Supply Module (USB)
- the specification quotes 'Max Ripple smaller than < 5mVpp'. We configure
the CAEN N1419 outputs as floating wrt NIM module/crate chassis.
For example, attachment 1, shows the output of module #2 (Addr 01) channel #3
(unused channel) set to 10V (leakage current 0.030uA) - core (Ch 1)/braid (Ch 2).
Tektronix 3034C channels 1 & 2 are both set ac/1M.
Attachment 2 shows math function Ch 1 - Ch 2 (50mV/division cf. 200mV/division
for Ch 1 and Ch 2)
Attachment 3 shows CAEN N1419 #2 settings
Attachment 4 per attachments 1 & 2 *except* the cables from channels 0 and 1
of CAEN N1419 #2 have been disconnected from the NIM module. The structure of
the common mode noise changes but its amplitude remains significant. This
presumably indicates that there are other sources of common mode noise in
addition to that observed at the output of the CAEN N1419 HV outputs.
Attachments 5 & 6 show the NIM crate front panel +6V output wrt ground
for the lower (NIM Bin type REPIC, BNC PB-4, Ortec 433, 2x MACB, 2x CAEN N1419,
1x CAEN 1419B) and upper (NIM Bin type OKEN, 9x MACB) AIDA NIM bins respectively.
All +/-24V, +/-12V and +/-6V front panel outputs show the same noise structure.
Attachment 7 shows equivalent of attachment 6 but using Tektronix DPO3054
which can display FFT.
Update -----------------------------------------
Tested the CAEN HV supply in T9 using the same method and observed similar results.
With help from Mos Kogimtzis a better method of measuring the HV noise was used.
The co-ax from the isolated output of the HV module was connected to one input of the 'scope. HV set to 1V.
Thus the screen of the HV signal is grounded at the 'scope amplifier input. This nearer to how the HV is used with a detector.
The single signal input channel was set to DC 1MR with an offset of 1V.
The 'scope can now display at 4mV/division.
The peak/peak was less than 5mV.See attachment 8 slide 1
There are features at both high and low frequency, attachments slides 2 and 3. NB 1mV/division.
If a differential measurement is required then a suitable cable with a shielded twisted pair is needed.
Update #2 -----------------------------------------
Moved the AIDA T9 HV supply to a CAEN NIM bin. Newly purchased this year.
This is the only module in the bin.
Used the simple method of noise measuring as before with the same cables and 'scope.
Attachment 9 shows there is a different type of noise. Not regular like attachment 8 but more random and larger.
The HV is set to 1V.
Further investigation will be carried out using AC coupling and HV set to 50V. |
|
Tue Dec 6 02:30:35 2016, TD, Report - low - significant variation in FEE64 boot times
|
Not something we were not aware of already but /var/log/messages illustrate the issue.
Dec 6 11:13:02 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.8:713 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida8 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:02 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.6:819 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida6 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:02 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.4:964 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida4 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:02 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.18:698 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida18 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:02 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.7:668 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida7 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:02 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.5:855 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida5 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:02 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.17:726 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida17 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:03 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.10:676 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida10 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:03 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.16:881 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida16 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:03 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.12:813 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida12 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:03 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.11:855 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida11 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:03 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.14:761 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida14 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:03 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.9:814 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida9 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:03 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.13:803 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida13 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:03 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.15:803 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida15 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:06 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.19:821 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida19 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:07 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.22:747 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida22 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:07 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.1:920 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida1 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:07 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.23:810 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida23 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:07 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.20:780 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida20 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:07 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.24:805 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida24 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:13:07 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.21:694 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida21 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:14:57 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.14:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:14:57 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.10:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:14:57 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.8:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:14:57 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.4:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:14:57 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.7:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:14:58 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.13:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:14:58 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.12:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:14:58 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.16:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:14:58 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.15:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:14:59 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.9:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:00 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.1:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:00 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.20:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:00 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.23:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:00 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.6:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:00 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.18:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:00 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.24:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:00 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.22:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:00 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.11:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:00 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.19:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:01 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.5:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:01 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.21:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:03 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.17:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:15:58 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.2:1018 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida2 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:16:51 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.1.2:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:17:06 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.3:785 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida3 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:17:47 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.3:864 for /MIDAS@aidas
(/MIDAS@aidas)
Dec 6 11:18:55 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.15:893 for
/data10/XilinxLinux/ppc_4xx/rfs/nnaida15 (/data10/XilinxLinux/ppc_4xx/rfs)
Dec 6 11:19:35 aidas1 rpc.mountd[2926]: authenticated mount request from 10.1.2.15:864 for /MIDAS@aidas
(/MIDAS@aidas) |
|
Tue Dec 6 02:20:29 2016, TD, Tuesday 6 December
|
11.20 DSSSD bias & leakage currents OK - see attachments 1 & 2
FEE64 temperatures OK - see attachment 3
Ambient temperature +24.8 deg C, d.p. +3.6 deg C, RH 25.4%
14.40 Latest version of leakage curent spreadsheet - see attachment 4
https://docs.google.com/spreadsheets/d/12hgbrywB10hGsKt5uc2HnLfZymh8_uvM6cEASbbqnBE/edit#gid=1357176413
18.30 DSSSD bias OFF
FEE64 power OFF
AIDA withdrawn from BRIKEN (CH2)n moderator
BNC PB-4 pulser OFF
NIM bins OFF
Julabo FL11006 chiller OFF
3 phase ac power OFF
ac power OFF and disconnected
USB-controlled ac mains relay removed for mod/update |
|
Mon Dec 5 11:53:26 2016, TD, MACB test 42x
|
MACB configuration can be found at https://elog.ph.ed.ac.uk/AIDA/357
To investigate system-wide check clock status errors for nnaida5, 7, 8, 15 & 16
PJCS requests changing MACB #3 (5, 6, 13 & 14) mode from 3 to 0 (all other MACB
modes unchanged) followed by power-cycle of FEE64s
System-wide checks - see attachments 1-11
No clock status errors observed for nnaida5
N.B. nnaida23 fails clock status
Switch MACB #3 (7, 8, 15 & 16) from mode 0 to 3, and MACB #4 from 3 to 0
------------------------------------------------------------------------
System-wide checks - see attachments 12-21
ReSync not complete for nnaida21, 22
Clock status errors observed for 5, 7, 8, 15, 16 *and* 21, 22
Switch MACB #4 (21, 22, 29 & 30) from mode 0 to 3, and MACB #5 (7, 8, 15 & 16) from 3 to 0
------------------------------------------------------------------------------------------
System-wide checks - see attachments 22-28
ReSync not complete for nnaida7, 8, 15 & 16
Clock status errors observed for nnaida7, 8, 15 & 16 - status = 0
Switch MACB #5 (21, 22, 29 & 30) from mode 0 to 3
-------------------------------------------------
System-wide checks - see attachments 29-33
ReSync OK
Clock status errors observed for nnaida5, 7, 8, 15 & 16 - status = various, bit 2 always set (as before)
Replace MACB #5 (was rev A, MACB serial #9) with MACB serial #13 (rev A, firmware 16.4.15) mode 3
-------------------------------------------------------------------------------------------------
System-wide checks - see attachments 34-36
ReSync OK
Clock status errors observed for nnaida5, 7, 8, 15 & 16 - status = various, bit 2 always set (as before)
i.e. no change, MACB #5 NIM module not the problem
Replace MACB #1 (was rev B, MACB serial #21) with MACB serial #38 (rev B, firmware 16.4.15, internal CLK TERM
mod) mode 0
-------------------------------------------------------------------------------------------------------------------------
System-wide checks - see attachments 37-40
ReSync OK
*ALL* system-wide checks OK
Offline analysis of file Dec2016/R1_5 demonstrates ADC & disc data synchronised - see attachments 41 & 42 |
|
Mon Dec 5 10:51:08 2016, TD, Monday 5 December
|
19.50 DSSSD bias & leakage currents OK - see attachments 1 & 2
FEE64 temperatures HIGH - see attachment 3
FL11006 E01 low fluid level (actual halfway between minimum and middle visual markers)
water topped up to just below maximum visual marker and FL11006 restarted - see attachment 4
Ambient temperature +25.6 deg C, d.p. +7.2 deg C, RH 31.1%
20.25 Leakage current spreadsheet appended - see attachment 5
https://docs.google.com/spreadsheets/d/12hgbrywB10hGsKt5uc2HnLfZymh8_uvM6cEASbbqnBE/edit#gid=1357176413 |
|
Sun Dec 4 05:46:42 2016, TD, SyncCheck RIBF03R1 & RIBF123R1 commissioning tests archived
|
The SyncCheck etc software used for the RIBF123R1 and RIBF03R1 commissioning
tests on d05 (user aida) has been archived as
aidas1:/homes/npg/SyncCheck/SyncCheck-d05-041216.tar.gz
aidas1:/homes/npg/SyncCheck/DataPackage-d05-041216.tar.gz
aidas1:/homes/npg/SyncCheck/ribfts-d05-041216.tar.gz |
|
Sun Dec 4 04:05:24 2016, TD, Report - low - DAQ SETUP sometimes produces Javascript error
|
DAQ SETUP sometimes produces Javascript error instead of a pop-up displaying
the status of the ReSync - see attachment 1
Re-run ReSync by selecting 'Perform ReSync' from 'Master Timestamp Control' |
|
Sun Dec 4 03:44:12 2016, TD, Sunday 4 December 16x
|
12.45 DSSSD bias & leakage currents OK - see attachments 1 & 2
FEE64 temperatures OK - see attachment 3
Ambient temperature +25.1 deg C, d.p. -3.0 deg C, RH 15.6%
14.05 per FEE64 Rate, Hitrate, 1*L and 1*W spectra, good events stats - see attachments 4-10
Note - good events stats indicate increased extrinsic noise (c. 100kHz period) during these screenshots
14.15 1*W and 4*W spectra for nnida24, 17 & 20 - see attachments 11-16
Note - nnida24 ASIC#1 probably has cable/connector fault at DSSSD end |
|
Sat Dec 3 10:49:36 2016, TD, Saturday 3 December
|
19.48 DSSSD bias & leakage currents OK - see attachments 1 & 2
FEE64 temperatures OK - see attachment 3
Ambient temperature +25.1 deg C, d.p. -3.0 deg C, RH 15.6% |
|
Fri Dec 2 09:58:54 2016, DK, Simple PID with LISE++
|
I wrote this LISE++ file based on the Takechi .lpp modified by AE for 77Ni, 78Ni, 76Ni.
Basically, I changed the primary beam to 48Ca, reduced the production target thickness to 1 mm (I think it may
be correct), inserted the carbon target at F8, and made the RIB as 41Al and had it calculate the optics. Then I
modified by hand D7 and D8 Brho settings to like 6.32 Tm which is something near the correct value (for plastic,
but I forget for carbon, slightly different perhaps?)
Then I make a fairly arbitrary dE-ToF plot (attachment 1) without any concern for what data it thinks is filling
the plot, and run the Monte Carlo simulation.
This may give a user some kind of naive picture of what sorts of ions we might expect, with a basic clue about
their relative intensity or improbability to detect.
I did this work in literally about 5 minutes total, so do not take it too seriously. It is definitely not
right, but it is not totally nonsense either. You can play with the .lpp file (attachment 2) if you want to
improve it. You should definitely get the degraders used within BigRIPS correctly. I imagine they are much thicker, because D6 being 8.42 Tm is much too high (it was more like
7.5 Tm or so?) The other things you can (and should) add is things at F11 like our degraders, AIDA, and so on. I heard Gabor might do this at some point, but he may have become
very busy with other tasks.
Attachment 3 shows some relative intensities numerically. Again, you should not really trust this.
However, let's take some known experimental values.
I recall that at the BigRIPS F11 Pla. scaler, when we did the 41Al unreacted measurement, it was about 30 cps = 108000 counts per hour
I think we had about several counts per hour of 40Mg in the best case reaching to F11.
It means that 41Al and 40Mg ratio is around order 10^5 difference.
Surprisingly, this is nearly the same as the results of this quick LISE++ simulation (attachment 3 has numbers) |
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Fri Dec 2 09:47:58 2016, DK, F8 targets
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F8 target measurements, for posterity.
Plastic: ~39 to 40 mm
Carbon: 20. mm |
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Fri Dec 2 09:47:45 2016, DK, F8 targets
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F8 targets, for posterity.
Plastic: 39~40 mm
Carbon: 20. mm |
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