ELOG S1287

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

Sat Apr 9 14:57:30 2011

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

Mon Apr 11 14:57:08 2011

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.

Mon Apr 11 18:39:17 2011

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

Attachment 2: 3.png

Attachment 3: 4.png

Tue Apr 12 11:21:38 2011

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

Wed Apr 13 09:37:51 2011

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

Attachment 2: 2.png

Attachment 3: 4.png

Thu Apr 14 10:06:34 2011

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

Attachment 2: 5.png

Fri Apr 15 11:00:17 2011

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

Attachment 2: 6.png

Sat Apr 16 09:31:56 2011

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

Sun Apr 17 09:47:04 2011

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

Fri May 6 06:03:00 2011

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

Thu May 12 03:04:44 2011

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?

Fri May 20 05:47:08 2011

3.25MeV/u 21Ne(5+)

Attachment 1: 22.grab.y17428.png

Sun May 22 11:45:03 2011

4.11MeV/u 21Ne(5+)

Attachment 1: 30.grab.h25527.png

Tue May 24 01:16:37 2011

Re: End of Shift summary

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
times of the wrong sign. This was corrected from Run 81 onwards.

TDC channel 0 (reference channel) should have been recorded in the EbyE data - common stop TDC values
can therefore be calculated offline by switching the egid2logical logical variable csm from TRUE to FALSE.
  
2. The offline sort is behaving very badly and many of the sorts run since yesterday to now are wrong. Make sure
you (a) sort on a different machine than the DAQ and (b) make sure that the sort is killed each time you start a
new sort and (c) make sure that it is sorting the righrt run number.

Amen

Fri May 27 14:24:00 2011

S1287 data transfer

S1287 data files R1_*.gz to R100_*.gz transferred from directory
tuda2:/data2/data/S1287 to directory tuda3:/data3/data/S1287

This releases c.18Gb of space in the tuda2:/data2 filesystem

Fri Jan 11 09:48:58 2013

Other

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.

Thu May 26 23:46:40 2011

Sarah and Brian

Thu 16:00-00:00 summary

Run139

Started 19:05:03
Stopped 20:36:36

Rates were reaching well above 8500, ops were measuring 160 epa on FC0 so they decreased it to 120 epa before starting next run.

Run 140

Started 20:42:12 - Scalers were acting up, stopped the run
Stopped 20:55:50

Run 141

Started 20:56:14
Stopped at 22:50:02

Rates were too low (~4289), ops were measuring 70 epa on FC0, got ops to increase current to 120 epa before starting next run.

Run 142

Started 22:56:34
Stopped 23:32:13

Rates were reaching above 9000 again, ops were reading 150 epa on FC0. Brought it back down to 115 epa before starting next run.

Run 143

Started 23:36:38 - scalers were acting up, stopped the run
Stopped 23:37:46

Run 144

Started 23:40:17

****submitting summary early in case browser crashes again. will update with any changes.

Tue May 24 00:01:03 2011

Oliver and Hicham

end of shift summary

Things have been running smoothly from 4 pm to midnight.

Reading in FC0 = 120-130 epA

Total trigger (accepted trigger) = 7500 (4000) Hz

Gas temperature has dropped from 30 to 22 deg C (due to evening cooling of experimental hall?). As a consequence, pressure has dropped by 0.2% (current value 249.8 torr).

Runs during this shift: 87, 88, 89, 90, and 91 (still running).

Runs 87-90 have been analyzed with sorting code.

Good night

Mon May 23 09:59:23 2011

Mike Bentley