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ID |
Date |
Author |
Type |
Category |
Subject |
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60
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Fri Jan 11 06:56:01 2013 |
Jessica Tomlinson | Other | General | multiplicities, hit patterns and good hits in an event |
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 number the data from the last event was being read into the next event too. It was only clearing the 'data(i) arrays which is what the data is unpacked as. I have now got it clearing both so data is not read in for multiple events. |
| Attachment 1: 411mev-multiplicities-and-hitpat.pdf
|
|
|
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61
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Fri Jan 11 09:48:58 2013 |
Tom Davinson | Other | General | Re: multiplicities, hit patterns and good hits in an event |
| Jessica Tomlinson wrote: |
|
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 number the data from the last event was being read into the next event too. It was only clearing the 'data(i) arrays which is what the data is unpacked as. I have now got it clearing both so data is not read in for multiple events.
|
?
As far as I am aware it has never been necessary to explicitly zero the 'raw' (or packed) data arrays containing the
ADC/TDC data and active channels in each event. Usually it is only necessary to zero those elements of the 'unpacked'
arrays which contain event data. |
|
|
2
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Sat Apr 9 11:35:14 2011 |
Tom Davinson | | | TUDA configuration & setup |
Nominal detector configuration for S1287 is as follows:
Detector Tgt Ladder #2
-Detector Nominal LAB Solid
Distance (cm) Angles (deg) Angle (sr)
S2-1 7.0 9.5-26.4 0.430
S2-2 28.0 2.4-7.1 0.032
W >35.0 0.0-4.1 ~0.020
S2-1 MSL type S2(DS)-500
S2-2 MSL type S2(DS)-500
W MSL type W(DS)-1000
Hardware installed in TUDA chamber is as follows (listing from
upstream to downstream):
1 Upstream support collar
2 PDs (to monitor Ni window)
PD preamplifier assembly
3 4mm dia collimator
CCTV camera?
Target Ladder - Position #1 - 83cm from inner surface of the downstream flange
5mm dia anti-scatter collimator
PDs (to monitor 197Au RBS)
Target Ladder - Position #2 - 75cm from inner surface of the downstream flange
10mm & 3mm dia tuning apertures, ZnS, PDs, (CH2)n targets
4 S2-1 DSSSD
S2 preamplifier assembly
5 S2-2 DSSSD
S2 preamplifier
6 W DSSSD
W preamplifier assembly (to be shipped to TRIUMF)
7 Faraday Cup
8 Downstream 4-vane monitor (not used)
Detector mounts will be within +/-5mm of their nominal positions. |
| Attachment 1: GasTUDA-7.png
|
|
|
|
3
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Sat Apr 9 14:57:30 2011 |
Tom Davinson | | | MIDAS DAQ configuration |
tuda2 (by TUDA chamber, SEBT1) was powered off on arrival
- this may have been due to a previous power outage between
March 18-April 4. Rebooted OK.
MIDAS DAQ operational
MIDAS DAQ reads out CAEN V560 Scaler #1 channels #0-7 (see
file VMEDataSources below) on a per event basis.
Data directory tuda2:/data2/data/S1287
S1287 requires 64+64+32+16=176 channels of ADCs/TDCs
i.e. 6x Silena 9418/6V ADCs and 2x CAEN V1190A TDCs.
Currently configured for 11x ADCs, 3x TDCs and 2x Scalers.
Note - VME crate #2 (top) displays a yellow 'overheat'
warning LED. This is probably bogus - the air and PSU
temperatures reported by the front panel look OK.
MIDAS DAQ works for mode 'MIDAS Data Acquisition' and
'TUDA'. For the latter, all scalers and the EPICS variables
(defined by tuda:/MIDAS/TUDA/tcl/EpicsDefn.tcl - see below)
are readout every 20s. |
| Attachment 1: latest
|
SAC sac#1 vme 0x0400:0x000000:0x00000000:0:0 1 0 0 0 0 0 1 {} 1
{Silena S9418} s9418#1 vme 0x0000:0x000000:0x02000000:0:0 1 0 0 0 0 0 1 {} 1
{Silena S9418} s9418#2 vme 0x0000:0x000000:0x02010000:0:0 2 0 0 0 0 0 1 {} 2
{Silena S9418} s9418#3 vme 0x0000:0x000000:0x02020000:0:0 3 0 0 0 0 0 1 {} 3
{Silena S9418} s9418#4 vme 0x0000:0x000000:0x02030000:0:0 4 0 0 0 0 0 1 {} 4
{Silena S9418} s9418#5 vme 0x0000:0x000000:0x02040000:0:0 5 0 0 0 0 0 1 {} 5
{Silena S9418} s9418#6 vme 0x0000:0x000000:0x02050000:0:0 6 0 0 0 0 0 1 {} 6
{Silena S9418} s9418#7 vme 0x0000:0x000000:0x02060000:0:0 7 0 0 0 0 0 1 {} 7
{Silena S9418} s9418#8 vme 0x0000:0x000000:0x02070000:0:0 8 0 0 0 0 0 1 {} 8
{Silena S9418} s9418#9 vme 0x0000:0x000000:0x02080000:0:0 9 0 0 0 0 0 1 {} 9
{CAEN V1190} v1190#1 vme 0x0000:0x000000:0x01700000:0:0 1 0 0 0 0 0 1 {} 1
{CAEN V1190} v1190#2 vme 0x0000:0x000000:0x01710000:0:0 2 0 0 0 0 0 1 {} 2
{CAEN V1190} v1190#3 vme 0x0000:0x000000:0x01720000:0:0 3 0 0 0 0 0 1 {} 3
{CAEN V560} v560#1 vme 0x0000:0x000000:0x01000000:0:0 1 0 0 0 0 0 1 {} 1
{CAEN V560} v560#2 vme 0x0000:0x000000:0x01100000:0:0 2 0 0 0 0 0 1 {} 2
{Silena S9418} s9418#10 vme 0x0000:0x000000:0x02090000:0:0 10 0 0 0 0 0 1 {} 10
{Silena S9418} s9418#11 vme 0x0000:0x000000:0x020a0000:0:0 11 0 0 0 0 0 1 {} 11
|
| Attachment 2: latest
|
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... 66 more lines ...
|
| Attachment 3: MidasOptions
|
## sys
v1190_GroupBase 20
Include.VME 1
Include.V1190 1
v1190.channels 2048
v879_GroupBase 32
v767.shift 0
v1290.offset 0
v879.offset 0
Include.V767 1
Histogram.V767 1
v767.offset 0
v878.offset 0
Include.V775 1
Include.V1290 1
s9418.shift 0
Histogram.V775 1
Histogram.V1190 1
s9418.offset 0
Rate.channels 4096
Stat.channels 4096
v785.shift 0
v878.channels 4096
s9418_GroupBase 1
vme.channels 8192
s9418.channels 4096
Include.S9418 1
Include.V785 1
v1290.channels 4096
v775.shift 0
Histogram.V785 1
v775.offset 0
v785.offset 0
v792_GroupBase 32
v775_GroupBase 48
v879.channels 4096
v1290_GroupBase 24
Include.V792 1
v879.shift 0
v775.channels 4096
v767.channels 2048
Histogram.V792 1
vme.offset 0
Histogram.V1290 1
Include.V878 1
Include.V879 1
v767_GroupBase 28
Histogram.V878 1
v792.channels 4096
Histogram.V879 1
vme.shift 3
Histogram.S9418 1
v878.shift 0
Histogram.VME 1
v785.channels 4096
v878_GroupBase 32
v792.offset 0
v785_GroupBase 32
v792.shift 0
v1190.shift 0
v1290.shift 4
v1190.offset 0
##
|
| Attachment 4: VMEDataSources
|
32 0x01000010 32 30 0
32 0x01000014 32 30 2
32 0x01000018 32 30 4
32 0x0100001c 32 30 6
32 0x01000020 32 30 8
32 0x01000024 32 30 10
32 0x01000028 32 30 12
32 0x0100002c 32 30 14
|
| Attachment 5: v1190#1
|
AcqMde02 1
Trig16 40 -20 8 4 1
Edge23 2
Res26 0
Dtime29 0
RdOut32 0
RdOut34 9
RdOut3c 7
Enble45 -1 -1 -1 -1 -1 -1 -1 -1
Off51 0 0
|
| Attachment 6: v1190#2
|
AcqMde02 1
Trig16 40 -20 8 4 1
Edge23 2
Res26 0
Dtime29 0
RdOut32 0
RdOut34 9
RdOut3c 7
Enble45 -1 -1 -1 -1 -1 -1 -1 -1
Off51 0 0
|
| Attachment 7: v1190#3
|
AcqMde02 1
Trig16 40 -20 8 4 1
Edge23 2
Res26 0
Dtime29 0
RdOut32 0
RdOut34 9
RdOut3c 7
Enble45 -1 -1 -1 -1 -1 -1 -1 -1
Off51 0 0
|
| Attachment 8: v1190#4
|
AcqMde02 1
Trig16 40 -20 8 4 1
Edge23 1
Res26 0
Dtime29 0
RdOut32 0
RdOut34 9
RdOut3c 7
Enble45 -1 -1 -1 -1 -1 -1 -1 -1
Off51 0 0
|
| Attachment 9: GroupDefn.tcl
|
set Scaler_Base 30
set EPICS_Base 31
|
| Attachment 10: epicsDefn.tcl
|
# format of an EPICS item
#
# EPICS parameter name
# first item number to use for data
# format of EPICS parameter 0 = 32 bit floating number
# 1 = 32 bit integer
# 2 = 16 bit integer
set EPICS {}
lappend EPICS {SEBT1:CHAN1CI:SCALECUR 0 0}
lappend EPICS {SEBT1:CHAN2CI:SCALECUR 2 0}
#lappend EPICS {SEBT1:CI1:CONV 4 1}
#lappend EPICS {SEBT1:CI1:RANGE 6 1}
#lappend EPICS {SEBT1:CI1:ALIVE 8 1}
lappend EPICS {SEBT1:CHAN2CI:FULLSCALE 4 1}
#lappend EPICS {SEBT1:CHAN3CI:SCALECUR 12 0}
#lappend EPICS {SEBT1:CHAN4CI:SCALECUR 14 0}
#lappend EPICS {SEBT1:CHAN5CI:SCALECUR 16 0}
#lappend EPICS {SEBT1:CHAN6CI:SCALECUR 18 0}
#lappend EPICS {SEBT1:CI2:CONV 20 0}
#lappend EPICS {SEBT1:CI2:RANGE 22 0}
#lappend EPICS {SEBT1:CI2:ALIVE 24 1}
#lappend EPICS {SEBT1:CHAN6CI:FULLSCALE 26 1}
#lappend EPICS {SEBT1:CHAN7CI:SCALECUR 28 0}
#lappend EPICS {SEBT1:CHAN8CI:SCALECUR 30 0}
#lappend EPICS {SEBT1:CHAN9CI:SCALECUR 32 0}
#lappend EPICS {SEBT1:CHAN10CI:SCALECUR 34 0}
#lappend EPICS {SEBT1:CI3:CONV 36 0}
#lappend EPICS {SEBT1:CI3:RANGE 38 0}
#lappend EPICS {SEBT1:CI3:ALIVE 40 1}
#lappend EPICS {SEBT1:CHAN10CI:FULLSCALE 42 1}
#lappend EPICS {SEBT1:BIASON 44 0}
lappend EPICS {TUDA2:PNG5:RDVAC 6 0}
lappend EPICS {CCS2ISAC:BL2ACURRENT 8 0}
set env(EPICS_CA_ADDR_LIST) 142.90.133.255
set env(EPICS_CA_AUTO_ADDR_LIST) YES
set env(EPICS_CA_REPEATER_PORT) 9003
set env(EPICS_CA_SERVER_PORT) 9004
set env(PATH) /MIDAS/epics/bin:$env(PATH)
set env(LD_LIBRARY_PATH) /MIDAS/epics/lib:/usr/sfw/lib:$env(LD_LIBRARY_PATH)
# run caget to conditionally launch caRepeater
set z [catch {exec caget CCS2ISAC:BL2ACURRENT} m]
puts "EPICS initialise returned code=$z and information \"$m\""
|
| Attachment 11: TS_configuration
|
#device configuration information
# any line starting with a # is a comment and is ignored
stats ./stats
# devices available - list ends with a null line or a line starting with a &
# format class_name device_name driver_task_path_name
# class_name MUST be one of dlt, exabyte, scsitape, sink
dlt /dev/rmt/1 ./driver
exabyte /dev/rmt/0 ./driver
file /dev/file/0 ./driver
sink /dev/null/0 ./driver
&
#data link configuration information - list end with a null line
# format link_task_path_name
./linkTCP
&
#program options - list end with a null line
msg_reporting_level 0x0180fff8
# use 0x0080fff8 to enable msg logging
msg_logging_level 0xfff8
tapeserver_options 2
# default for following is 16Kbytes - both MUST be the same at present
data_buffer_size 32
tape_block_size 32
disc_file_size 2000
#
file_path_base /data2/data
&
#end of information
|
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4
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Mon Apr 11 14:57:08 2011 |
Tom Davinson | | | SEBT1 & HERACLES wipe tests |
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
Facility Coordinators are Lothar Buchmann/Pat Walden/Sky Sjue and Gordon Ball/Randy
for TUDA and HERACLES respectively.
Wipe test was performed by Tom Davinson (PPE: respirator and gloves).
Samples checked by Fiona Holness RPG - check OK. |
|
|
5
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Mon Apr 11 18:39:17 2011 |
Tom Davinson | | | Monday 11 April |
TUDA was successfully re-installed on SEBT1 by LB, TD, AML and PM.
Alignment checked by pillar mounted telescope downstream of HERACLES
and target ball between SEBT1 bending magnet and diagnostic section.
With minor adjustments of upper stage table the upstream and downstream
targets were within 15 thou L-R/U-D. Upper stage table and feet locked.
14.00 Cryo pumped by TUDA2:BP5 to <100mTorr
TUDA2.RVC5 closed and cryo compressor switched on
See attachment 1 for EPICS log
Note: MiniSys Eye-IMG ion gauge installed (EPICS readout only)
Re-entrant flange assembly installed - currently the 'window' NW25
fitting is open.
Centre target ladder linear translator re-installed. Note the
downstream linear translator needs to be moved to the upstream
position.
18.28 Time from 1 bar to 250mTorr ~12m (turbo ON)
Time from 250mTorr to 5.0E-4Torr ~5m (cryo ON)
Note: Transients in TUDA:PNG5:RDVAC when cryo gate valve opened
Observed pressure decreases to <1E-10Torr (PM tells
me that for this gauge this effectively means 'off'
cf. the usual TUDA ion gauge which reads high when 'off')
Time from 5.0E-4Torr to 5.0E-05Torr ~6m ('good' vacuum)
Total pump down ~24m (empty chamber)
See attachment 2 for EPICS log
07.32 Tuesday 12 April
See attachment 3 for overnight EPICS log
TUDA2:PNG5:RDVAC 7.2E-07Torr |
| Attachment 1: 2.png
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| Attachment 2: 3.png
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| Attachment 3: 4.png
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6
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Tue Apr 12 11:21:38 2011 |
Tom Davinson | | | Tuesday 12 April |
The TUDA @ ISAC-II grounding test was successfully completed this am
per work permit 2011-04-12-2.
We measured 60V/0mA (with PSU) and 0.385MOhm with a Digital multimeter.
The TUDA grounding test is now complete. The TUDA ground breaker switch
is now closed and locked. The lockout key has been returned to ISAC Ops.
11.27 TUDA2.PNG5 6.27E-07Torr
11.30 Vent to install experiment configuration and coolant loop
14.00 Experiment configuration (https://elog.triumf.ca/Tuda/S1287/2)
installed.
Coolant loop installed.
FTS RS44LT recirculating chiller coolant (ethanol) drained from
reservoir and returned to 5-litre red plastic gerry can - now stored
in Pat Walden's N. Cupboard in the ISAC-I hall.
FTS RS44LT coolant now 7-stage filtered water from ISAC-II cleaner's
room (on the corridor to rooms 148 & 154).
FTS RS44LT Set Low (SL) parameter changed from -43 deg C to +5 deg C
15.00 Test of coolant loop in air - no gross leaks
15.30 Commence pump down to test coolant loop at vacuum
See attachment 1 - time from turbo ON to 5.0E-5Torr ~18m
FTS RS44 switched on ~25' before datum - set point +5.5 deg C
TUDA.PNG5 pressure continues to decrease - coolant loop appears
to be OK
16.55 FTS RS44 temp +5.8 deg C
TUDA2.PNG5 9.24E-06Torr
FTS RS44 set point +22 deg C
Will leave pumping overnight with FTS RS44 off |
| Attachment 1: 1.png
|
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7
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Wed Apr 13 03:43:42 2011 |
Jamie | | | Ni window leak tests 1 |
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.
Plots are the same data, different scales. |
| Attachment 1: Screenshot.png
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| Attachment 2: Screenshot-1.png
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8
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Wed Apr 13 03:55:21 2011 |
Jamie | | | Safety Report |
attached
note. s2 position in fig. 1 is wrong, should be 360mm.
27/06/11 - final version of safety report added (produced just before the experiment began). |
| Attachment 1: S1287-Revised_Safety_Report.pdf
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|
| Attachment 2: revised.pdf
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9
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Wed Apr 13 09:37:51 2011 |
Tom Davinson | | | Wednesday 13 April |
09.20 TUDA2.PNG5 1.04E-06Torr
See attachments 1 & 2 for EPICS log of pump down and overnight
pumping
09.37 Vent TUDA
14.00 S2-2 and W positions swapped
Coolant loop disconnected - needs to be re-tested
15.08 Time to 250mTorr ~12m
Time from 250mTorr to 4.75-05Torr ~28m
See attachment 3
15.36 FTS RS44 set point +5.5 deg C
17.00 TUDA2.PNG5 4.5E-06Torr
17.14 FTS RS44 set point +22 deg C
17.31 TUDA2.PNG5 6.2E-06Torr
Cryo closed and turbo pump switched off. Will monitor leak-in rate
from good vacuum (< 1E-05 Torr) overnight.
|
| Attachment 1: 3.png
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| Attachment 2: 2.png
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| Attachment 3: 4.png
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10
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Thu Apr 14 10:06:34 2011 |
Tom Davinson | | | Thursday 14 April |
10.02 See attachment 1 for overnight EPICS log of TUDA2.CG5
Downstream flange secured by four bolts
Current pressure 1.07Torr - rate of increase ~0.2 Torr/5h
11.30 TUDA chamber pumped down to ~800mbar
Downstream flange bolts removed - no change in pressure observed
N2 bottle connected to TUDA vent valve - to vent and (hopefully)
exceed atmospheric pressure forcing downstream flange to move open
Pressure measured using MKS Baratron 1000Torr gauge
Result - pressure increased from 800 to ~1000mbar in ~45s
TUDA chamber pressure did not noticably exceed atmospheric
pressure and there was no obvious movement of downstream flange.
Gas could be felt escaping from sides of downstream flange.
Conclude - contact with downstream flange O-ring failed at, or near,
atmospheric pressure - this prevented buildup in excess of atmospheric
pressure
11.50 Installed:
preamp services (+/-15V preamp power, +/- preamp test inputs) - 10-way IDC
ribbon cables
detector HT - SMC/BNC cabling
preamp signals - 34-way IDC twist-n-flat ribbon cables
preamp thermocouple attached to an S2-1 preamplifier
15.00 Time to 250mTorr ~14m
Time from 250mTorr to 4.75E-5Torr ~45m
See attachment 2
16.04 FTS RS44 set point +5.5 deg C
16.21 FTS RS44 temperature +5.6 deg C
17.12 TUDA2.PNG5 8.2E-06Torr
FTS RS44 temperature +5.8 deg C
Preamp thermocouple +8 deg C
17.13 +/-15V preamp power ON
17.18 Preamp thermocouple +14 deg C
TUDA2.PNG5 8.0E-06Torr
17.23 Preamp thermocouple +14 deg C
TUDA2.PNG5 7.9E-06Torr
17.28 Preamp thermocouple +15 deg C
TUDA2.PNG5 7.7E-06Torr
17.43 Preamp thermocouple +15 deg C
TUDA2.PNG5 7.0E-06Torr
CAEN SY403 HV mainframe
Channel HT Detector Bias I_L
(V) (uA)
1 1 S2-1 -130 -0.03
2 2 S2-2 -130 -0.06
3 3 W -250 -0.02
4 4 PD -30 -0.03
Low leakage currents as expected - no evidence of high resistance
shorts
All other channels set to 0V
+/-15V PSUs
#1 +15V/0A -15V/0A (MSL type W preamp not installed)
#2 +15V/1.65A -15V/0.65A (2x MSL type S2 + 1x 16ch PD preamp units)
17.58 Preamp thermocouple +13 deg C
TUDA2.PNG5 6.3E-06Torr
18.13 Preamp thermocouple +12 deg C
TUDA2.PNG5 5.8-06Torr
18.29 Preamp thermocouple +12 deg C
TUDA2.PNG5 5.3-06Torr
18.32 +/-15V preamp power OFF
FTS RS44 set point +21 deg C
18.39 Cryo gate valve closed
Turbo off and isolated
4x bolts securing downstream flange removed
Repeat yesterday's leak-in test (bolts removed)
|
| Attachment 1: 1.png
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| Attachment 2: 5.png
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11
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Fri Apr 15 11:00:17 2011 |
Tom Davinson | | | Friday 15 April |
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
This history is very similar to the previous test (with
the flange secured by four bolts)
- see https://elog.triumf.ca/Tuda/S1287/10
Conclude - leak-in rate not affected by (i) lack of bolts
securing downstream flange, (ii) addition of cabling within
TUDA chamber - provided that the TUDA chamber has previously
been pumped to 'good' vacuum (< 1E-05Torr, say).
16.40 Modified preamp services cabling to avoid unterminated test -
input to PD preamp which causes reflections to previous test -
inputs to the S2 preamps.
+/-15V PSUs
#1 +15V/0.25A -15V/0.1A (1x 16ch PD preamp + 1x MSL type W preamp - not installed)
#2 +15V/1.5A -15V/0.55A (2x MSL type S2 + 1x 16ch PD preamp units)
16.51 Time to 250mTorr ~14m
Time from 250mTorr to 4.75E-05Torr ~40m
See attachment 2
17.50 FTS RS44 set point +5.5 deg C
18.48 TUDA2.PNG5 7.8E-06Torr
FTS RS44 set point +21 deg C
Cryo pump gate valve closed
Turbo pump off
Four bolts securing downstream flange removed
Vent to c. 300mbar with *He*
N.B. TUDA2.CG5 reads 770 Torr with 300mBar of He in TUDA chamber
MKS Baratron (capacitance manometer - gas independent reading)
attached to manual vent port of the Varian V550 turbo pump
Pressure reading at 'good' vacuum 0.0 Torr - no offset
Bourdon MKS S2 preamp
Baratron Thermocouple
(mBar) (Torr) (deg C)
19.08 300 221.7
19.18 300 222.0 +19
19.28 300 222.1 +20
19.38 300 222.3 +20
19.48 300 222.4 +21
20.08 300 222.6 +21 |
| Attachment 1: 2.png
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| Attachment 2: 6.png
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12
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Sat Apr 16 09:31:56 2011 |
Tom Davinson | | | Saturday 16 April |
Continuation of yesterday's test with c. 300mBar of He
in the TUDA chamber.
Bourdon MKS S2 preamp
Baratron Thermocouple
(mBar) (Torr) (deg C)
09.31 300 222.9 +22
10.30 300 223.1 +22
11.29 300 223.2 +22
12.29 300 223.3 +22
13.26 300 223.3 +22
14.27 300 223.5 +22
15.27 300 223.6 +22
16.28 300 223.7 +22
17.28 300 223.8 +23
18.28 300 223.9 +23
19.27 300 223.9 +23
20.27 300 223.9 +22
RAL109 Shaping Amplifier Modules
RAL109 Nominal Nominal Minimum
Resistor FSR Gain LLD
Detector Channels DIP (MeV) (keV/ch) (keV)
S2-1 p+n 0-47 3.3k 71.4 18.6 1300
S2-1 n+n 48-63 3.3k 71.4 18.6 1300
S2-2 p+n 64-111 1k 33.3 8.7 600
S2-2 n+n 112-127 1k 33.3 8.7 600
W p+n 128-143 1k 33.3 8.7 600
W n+n 144-159 1k 33.3 8.7 600
PDs 160-175 10k 183 47.7 3400
All RAL109 LLDs set to ~10mV (minimum)
CAEN V560 Scalers
Channel
0 Triggers
1 Triggers accepted
2 1kHz clock
3 Ortec 439
4 Pulser
5
6
7
8 S2-1 OR ch 0-15
9 S2-1 OR ch 16-31
10 S2-1 OR ch 32-47
11 S2-1 OR ch 48-63
12 S2-2 OR ch 64-79
13 S2-2 OR ch 80-95
14 S2-2 OR ch 96-111
15 S2-2 OR ch 112-127
16 W OR ch 128-143
17 W OR ch 144-159
18 PD OR ch 160-175
19
20
21
22
23
24
25
26
27
28
29
30
31 |
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13
|
Sun Apr 17 09:47:04 2011 |
Tom Davinson | | | Sunday 17 April |
Continuation of yesterday's test with c. 300mBar of He
in the TUDA chamber.
Bourdon MKS S2 preamp
Baratron Thermocouple
(mBar) (Torr) (deg C)
09.45 300 222.8 +21
10.44 300 222.9 +21
11.48 300 223.1 +22
11.49 FTS RS44 set point +22.0 deg C
+/-15V preamp power ON
12.01 300 223.4 +26 FTS RS44 @ set point
12.31 300 223.7 +26
13.00 300 223.9 +26
13.01 FTS RS44 set point +15.0 deg C
13.11 300 223.4 +21 FTS RS44 @ set point
13.41 300 223.0 +22
14.11 300 222.9 +22
15.14 300 222.9 +22
16.11 300 222.9 +22
17.11 300 223.1 +22
18.16 300 223.1 +22
19.10 300 223.2 +22
20.19 300 223.1 +21
20.20 +/-15V preamp power OFF
FTS RS44 set point +20 deg C
20.25 Bolts securing downstream flange re-installed
- finger tight only
20.45 Vent TUDA chamber to air, i.e. chamber contains He & air
See attachment 1. Conclude that the preamps can be operated with
the FTS RS44 recirculating chiller set point +15 deg C with 300mBar
of He. The S2-1 preamplifier thermocouple indicates that the preamplifiers
are operating at about ambient temperature with little apparent effect
on gas pressure.
N.B. For vacuum operation, the FTS RS44 set point should be +5.5 deg C
Pulser tests
BNC PB-4 settings:
Amplitude 90,000 x5 attenuator IN
frequency 266Hz
delay MIN
tail pulse
t_r 50ns tau_d 1000us
INT ref
polarity + (for p+n junction strips, - for n+n ohmic strips)
All ADC & TDC channels OK
ADCs
FWHM
Detector (ch) (keV)
S2-1 p+n #23 1.6 30
S2-1 n+n #8 1.6 30
S2-2 p+n #23 1.7 15
S2-2 n+n #8 1.8 16
W p+n #8 2.2 19 } using signals
W n+n #8 4.3 37 } from S2-2 preamps
PD #0 1.7 81
TDCs (0.8ns/ch)
Centroid FWHM
Detector (ch) (ch)
S2-1 p+n #23 245 1.4
S2-1 n+n #8 254 1.9
S2-2 p+n #23 253 1.7
S2-2 n+n #8 260 1.8
W p+n #8 254 1.8
W n+n #8 266 1.2
PD #0 233 1.6 |
| Attachment 1: He_test.png
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14
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Thu May 5 11:31:13 2011 |
JB | | | Tom's ToDo List |
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 grub
screws of *all* support rings - secure *all* grub screws
when finished
- use 9/16" spanner and adjustable wrench for mechanical support
for Swagelok connectors - done
- test for gross leaks at air - done
- test preamp with pulser - done
- re-test coolant loop with vacuum cycle - done
- move linear translator from position #3 to #1 - done
- align target ladders & re-entrant flange window
- select appropriate collimator (TUDA chamber entrance flange)
- install & test Faraday cup
- Ortec 439 or EPICS readout
for the former, scaler readout is setup
for the latter, startup EPICS TUDA diagnostics
- install & test CCTV camera to view ZnS scintillator
- remember we will replace viewport with H2 feedthrough
- TV monitor in ISAC Control Room
- connect via cable #2
- use cable #1 for Keithley 610C Electrometer
- mark screen with position of 3mm dia. tuning aperture
- install additional thermocouple to monitor ambient gas temperature?
- TUDA S Cupboard ISAC-I for thermocouple & switch
- install & test re-entrant flange windows with He
- assumes bypass has been installed
- install detectors
- measure actual positions of detectors
- alpha & pulser calibration
- install detector shields for *all* detectors for beam tuning
- tune all required beam energies up front
- grab screenshots of each tune from ISAC Ops log to obtain
exact beam energy from ToF diagnostic
- remove detector shields
- RF delay timing (with beam)
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15
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Fri May 6 06:03:00 2011 |
Tom Davinson | | | Sort programs, spectra titles & calibration procedure |
A summary of online sort programs can be found at:
~/S1287/sort/README
Program sort2.f remains to be completed.
VME and sort spectra titles can be found in directory:
~/S1287/titles
A summary of the calibration procedure can be found at:
~/S1287/calibration/README |
|
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16
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Fri May 6 15:08:00 2011 |
JB | | | New TUDA EPICS layout |
|
| Attachment 1: gas_handling-3.png
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17
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Sat May 7 17:29:13 2011 |
JB | | | Window leak tests on TUDA |
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.
In both cases, 2l volume isolated from pumps at start.
Gradients are comparible, hence no detectable He leak through window.
Will repeat with other windows and blank flange tomorrow. |
| Attachment 1: window2-leaktest.png
|
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18
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Wed May 11 17:59:12 2011 |
JB | | | Re-entrant flange alignment |
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 alignment, adjusting as appropriate.
Managed to get to ~0.5mm to the right and ~0.25mm too low.
This is acceptable so closed chamber and checked vacuum down to ~150mTorr. |
|
|
19
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Thu May 12 03:04:44 2011 |
Tom Davinson | | | Re: Re-entrant flange alignment |
> Alignments checks revealed that downstream end of
> TUDA was ~1mm off (can't remember which way).
Was the downstream flange bolted into position? |