Date: 31/03/2017
Start: 13:24
BRIKEN run: 036
AIDA Run: R16_5551
BigRIPS run: 179
DLT: 170331_1324_Mg40_036.dlt

BRIKEN Rate:  4 cps
F11 Rate: 13 cps

Date: 31/03/2017
Stop: 1324
BRIKEN run: 036
AIDA Run: R16_579
BigRIPS run: 180

Root file: 170331_1222_1514_B036_Mg40.root

OBSERVATIONS: Online cleared
BigRIPS started file 180 at 13:39 without noticing
They stop for calibration at 14:45

PDF file attached with the preliminary analysis of the October 2017 AIDA in beam test.

Date: 31/03/2017
Start: 15:24
BRIKEN run: 037
AIDA Run: R16_581
BigRIPS run: 181
DLT: 170331_1524_Mg40_037.dlt

BRIKEN Rate: 40  cps
F11 Rate:  12 cps

Date: 31/03/2017
Stop: 
BRIKEN run: 37
AIDA Run: R16_596
BigRIPS run: 181

Root file: 170331_1222_1621_B037_Mg40.root

OBSERVATIONS: 

We used the laser to align the degrader (see attached photos)

According to the LISE calculation, equivalent effective thickness for 6 mm of Carbon target is 4.5 mm thick Aluminum.

Therefore, we've set the degrader system as follow:

Expected Resolution:

------------------------------

G7 should be ~2.0 keV FWHM at 600 keV for all crystals.
D4 should be as low as 1.8 and as high as 3.3 keV FWHM at 600 keV.

Configuration File: (~/DAQ_1/include/hvmon.conf)

-----------------------------------------------------------------

 Type      IP address    channel  slot  name   voltage   Current   RampUp  RampDn    Switch On/Off
                                                                                     V             uA      V/s     V/s            1/0
  ------    ---------------            ---------    -----    ----      -------     -------   ------  ------    -------------
 0        192.168.13.239         0           3     D40      3000       0.5       2       5             1
 0        192.168.13.239         1           3     D41      3000       0.5       2       5             1
 0        192.168.13.239         2           3     D42      3000       0.5       2       5             1
 0        192.168.13.239         3           3     D43      3000       0.5       2       5             1
 0        192.168.13.239         4           3     G70      2500       0.5       2       5             1
 0        192.168.13.239         5           3     G71      3000       0.5       2       5             1
 0        192.168.13.239         6           3     G72      2500       0.5       2       5             1
 0        192.168.13.239         7           3     G73      2500       0.5       2       5             1
 

In all cases (Temperature Monitor, ACQ, etc.) D4 comes before G7 and in the same order.

Today several tests (3) were done with the germanium detectors with the voltage configuration listed in the previous entry.

The tests were as follows:

Tests with 60Co+137Cs sources

1. Initial evaluation of calibration and resolution (Calibration60Co137Cs_energySignal.root)

2. Cable changes to optimize resolution for detector D4 (Calibration60Co137Cs_timingSignal.root)

Test with 152Eu

3. Final (proposed) configuration of filter parameters, voltages, and cable connections. (Calibration152Eu.root)

------------------------------------------------------------------------------------------------------------------------------------

At the time of this log the evaluation of resolution and calibration based on Eu data is to be completed.

The configuration file for the Ge is listed in FirsttestGe.xlsx .

The details of the tests can be found in the attached .pdf pictures or in the .root files.

You may notice that 2/4 of each clover count less than the other 2 and this is due to source position.

For the runs on Co and Cs It was seen that D4 had considerable tailing in channels 1 and 3 (black and green leaves, respectively) and D4 has worse resolution. Channel 3 (green) also requires a non-linear calibration. Currently only linear calibration is applied. But this is as expected from how the detectors were running before leaving Tennessee.

Therefore we decided to check if the second group of signal cables had better resolution for detector D4. The second group of cables were presumed to be timing signals and the run is labeled as such, however, the signals are similar within a few percent and this assumption may have been incorrect.

The result is listed in calibrationClovers.ods  in the third tab (TimingvsEnergy).

!!!Noise in the different groups of cables should be evaluated.!!!

Based on this test the first cable from the first test in D4 was reattached and the others remain in place. The second channel saw improvement and the 3rd and 4th channels saw limited change (deemed insignificant). This bundle has been labeled 'D4 Signal' for now.

Avg. D4 Resolution for Co and Cs lines is 3.3 keV FWHM

Avg. G7 Resolution for Co and Cs lines is 2.6 keV FWHM

We estimate that these are accurate within ~10%. But this is sufficient analysis for this point and time.

Further details will be posted regarding the Eu data , at a glance the configuration is seen to be very close except for the known non-linearity in D4 and one channel from G7 which should definitely be recalibrated. Thresholds and noise levels should also be re-evaluated.

HPGe fill line to D4 replaced only small leak (overflow) once Ge is full.

Solenoid was also wrapped to no effect. AIDA DAQ still stops writing.

Boron sheet and extra polyethylene were placed back on top.

At least during the timeframe in between ~ 21:30 (11/08) - 23:30 (11/09) (161108_2323_717273Ni.root) we see that the silicon dE have a very low counting rate. ~1Hz when the first AIDA detector sees ~600 Hz and a cumulative ~2kHz. The energy range in the dE stops at ~10MeV.

Edit: It appears the Si dE were removed. Some signals are still in the spectra.

Collaborators,

Attached is a phone photo of example signals from the new preamps with 3 3He tubes connected to a scope. Scope channels 1,2,3 (color y,c,m respectively) are preamp channels 1,2,3 while 4 (green) is open. Trigger is on channel 3, at 500mV/div and other channels are at 500,200,and 20 mV/Div for channels 2,1,4 respectively. Time scale, though glared out should be 10us per div ( although we saw longer rise times as well). 

Signals were all good for all channels. Coincident with real signals were other negative signals ~15x (750mV/50mV magenta/green) smaller and with a different shape. No positive signals were observed in any channel. 

This picture is representative of the 

Collaborators,

Attached is a phone photo of example signals from the new preamps with 3 3He tubes connected to a scope. Scope channels 1,2,3 (color y,c,m respectively) are preamp channels 1,2,3 while 4 (green) is open. Trigger is on channel 3, at 500mV/div and other channels are at 500,200,and 20 mV/Div for channels 2,1,4 respectively. Time scale, though glared out should be 10us per div ( although we saw longer rise times as well). 

Signals were all good for all channels. Coincident with real signals were other negative signals ~15x (750mV/50mV magenta/green) smaller and with a different shape. No positive signals were observed in any channel.

This picture is representative of the signals of 2 new preamps as well as the functional spare already at UT. 

Additionally, the two preamps sent for repair have been received.

NTB, KPR

-1

As previously recorded (81), on Thur Oct 13th, A NIM crate failure caused preamp power loss to the HPGe's. While D4 recovered with nominally the same resolution as before. G7 would not recieve power to the preamps without an alarm from the NIM crate.

It was determined that there was a short along the lines of +12V and Ground , -12V and Ground, and between +-12V.

After removing the Red preamp ribbon cable, the remaining channels (K,G,B) were able to be powered on and found to have a nice resolution of near ~2.3 keV for 661 (137Cs).

During the course of testing, the preamp power distribution box (supplied from ORNL) was seen to have a fault in the +12V light and supply. This was seen by placing this supply in a new NIM bin and seeing that it would also not properly supply preamp power to clover D4 (which had recovered fully).

The consistency in this fault is seen as cause to be suspicious of this preamp power supply. It has been replaced by putting two ORTEC TSA's into a seperate NIM bin and using the standard power supply for D4 and G7.

There was no appreciable effect on noise in any other detector.

G7 clover was on the stand
Source: 152Eu
File: 171018_1627_152Eu_G7.root

Resolution check for 1408 keV peak

         FWHM(keV)  Mean (keV)
G7Black    2.88     1407.2
G7 Red     3.06     1406.8
G7 Green   2.81     1407.0
G7 Blue    2.93     1406.5

 	K		R		G		B
m	0.001558636	0.0006599344	0.0015311753	0.0015807021
b	-0.6545742444	0.4330534066	2.001278013	1.0994163913
				
				
FWHM are <= 3 keV @ 1408				
K		R		G		B	
3.1458290692	2.5879235958	2.9829238667	3.0707781948	
 				
The green leaf of D4 may have a noticeable non-linearity above 1MeV.				

Setup:

2 MPOD + cards with 8 channels each one where the 10 BRIKEN PA are connected.

1 MPOD + card with 8 possible inputs where the 8 Ge are powered

1 MPOD – card with YSO detector

The visualiser located in the local IP accessible webpage 192.168.13.239 must show the implemented changes. Open webpage first!

• ssh -X pixie16@brikenhv.ribfdaq (&psw)

• firefox &

• Type local IP 192.168.13.239 in the address bar

• Connect via ssh to the IP: ssh -X pixie16@brikenhv.ribfdaq (IP and psw , need to know)

Pre-Amplifier HV Card Card Channel Voltage 3He Tubes

PA1 (diff) 1 0 1450 VRIKEN: Ø 2.54cm (5.132 atm)Download specifications (Downstream counters)

PA2 (diff) 1 1 1450 VRIKEN: Ø 2.54cm (5.132 atm)(Upsteram counters)

PA3 (diff) 1 2 1550 VUPC: Ø 2.54cm (8atm)

PA4 (diff) 1 3 1550 VUPC: Ø 2.54cm (8atm)

PA5 (single) 1 4 1550 VUPC: Ø 2.54cm (8atm)

PA6 (single) 2 100 1200 VORNL: Ø 2.54cm (10.26atm)Download specifications

PA7 (single) 2 101 1750 VORNL: Ø 5.08cm (10.17atm)Download specifications

PA8 (single) 2 102 1750 VORNL: Ø 5.08cm (10.17atm)

PA9 (single) 2 103 1750 VORNL: Ø 5.08cm (10.17atm)

PA10 (single) 2 104 1750 VORNL:Ø 5.08cm (10.17atm)

High voltage control: All High voltage 3He and HPGe can now be set via a configuration file called hvmon.conf and a program called hvmon. hvmon also watches the temperature of the HPGe via the RTD outputs and sets trip and other safety settings.

The important locations are as follows:

• Path for conf file: /home/pixie16/DAQ_BRIKEN/include/hvmon.conf

• Path for temperature monitor: /home/pixie16/DAQ_BRIKEN/kelvin/kelvin-u3

• Path for temperature logging: /home/pixie16/DAQ_BRIKEN/kelvin/kelvin-log

• Path for temperature log control: /home/pixie16/DAQ_BRIKEN/kelvin/kelvin-read

• Path for hvmon: /home/pixie16/DAQ_BRIKEN/hv-mpod/hvmon

• Path for hvmon control: /home/pixie16/DAQ_BRIKEN/hv-mpod/hvmon-read

This is also the order in which the programs should be run at first.

If the kelvin temperature monitoring programs are already running ('ps -A | grep kelvin' to check) and you wish to change the settings:

1. Adjust hvmon.conf

2. stop 'hvmon' with ctrl+c

3. rerun by './hvmon' (also 'up + Enter')

If kelvin is not running, in a separate window or screen

1. cd /home/pixie16/DAQ_BRIKEN/kelvin/

2. ./kelvin-u3 &

3. ./kelvin-log &

Then proceed with the above.

This is also the order in which the programs should be run at first. 

If the kelvin programs are already running ('ps -A | grep kelvin' to check) and you wish to change the settings:

2 OPTIONS!

Option 1:
Adjust channels that have previously been declared by using

./hvmon-read

16

and follow on screen instructions. If channels have not been declared previously in hvmon.conf → proceed to option 2.

Option 2:

1. Adjust hvmon.conf

2. stop 'hvmon' with ctrl+c or by ‘100’ at hvmon-read

3. rerun by './hvmon &' (also 'up + Enter')

The example below turns on ALL detectors PA (Pre-amps1-10), D4/G7 HPGe (KRGB, Black, Red, Green, Blue), and YSO/Gari. This example sets all detectors voltage,ramp up/down speed and status (0/1 = Off/On respectively). IMPORTANT! Ramp speed goes card by card.

UPDATE!!

3He Preamps now run up and down by a small ramp for the first 50V hardcoded into hvmon via the ‘PA’ keyword. This avoids the reset fault.

EXAMPLE hvmon.conf:

Type      IP address     channel slot  name   voltage   Current   RampUp  RampDn Switch On/Off

                                                           V         A       V/s      V/s          1/0

------    ---------------     ---------    -----  ----   -------   -------   ------  ------    -------------

0        192.168.13.239         0           0     PA1     1450     0.0001       50      50            1

0        192.168.13.239         1           0     PA2     1450     0.0001       50      50            1

0        192.168.13.239         2           0     PA3     1550     0.0001       50      50            1

0        192.168.13.239         3           0     PA4     1550     0.0001       50      50            1

0        192.168.13.239         4           0     PA5     1550     0.0001       50      50            1

0        192.168.13.239         5           0     OFF       0      0.0001       50      50            0

0        192.168.13.239         6           0     OFF       0      0.0001       50      50            0

0        192.168.13.239         7           0     OFF       0      0.0001       50      50            0

0        192.168.13.239         0           1     PA6      1200    0.0001       50      50            1

0        192.168.13.239         1           1     PA7      1750    0.0001       50      50            1

0        192.168.13.239         2           1     PA8      1750    0.0001       50      50            1

0        192.168.13.239         3           1     PA9      1750    0.0001       50      50            1

0        192.168.13.239         4           1     PA10     1750    0.0001       50      50            1

0        192.168.13.239         5           1     OFF       0      0.0001       50      50            0

0        192.168.13.239         6           1     OFF       0      0.0001       50      50            0

0        192.168.13.239         7           1     OFF       0      0.0001       50      50            0

0        192.168.13.239         2           2     YSO       700    0.0005       50      50            1

0        192.168.13.239         0           3     D40      3000    0.0001       5       5             1

0        192.168.13.239         1           3     D41      3000    0.0001       5       5             1

0        192.168.13.239         2           3     D42      3000    0.0001       5       5             1

0        192.168.13.239         3           3     D43      3000    0.0001       5       5             1

0        192.168.13.239         4           3     G70      2500    0.0001       5       5             1

0        192.168.13.239         6           3     G72      2500    0.0001       5       5             1

0        192.168.13.239         7           3     G73      2500    0.0001       5       5             1

-1        

=================================================

Everything below type = -1 is treated as a comment

type = 0 => MPOD HV modules => accessed thru snmp

type = 1 => CAEN x527 HV modules => accessed thru CAENHVwrapper

With MPOD one can use IP address and channel numbers based on slot occupation
PA(1-4) are differential and PA(5-10) are unipolar.

In the program hvmon-read ‘Off’ always means ramp down and then turn off. The PA's like to hold on to voltage (~10-50V) and may cause a fault at ramp down and need reset. This should be Fixed with two stage ramping.

Warning!!: It has also been realized that mpod changes ramp up to be equal to ramp down. These parameters can be made equal for transparency.

To reset after fault use:

./hvmon-read

18 (or 5 then 18)

In case of power loss or other failure hit to do an emergency shutdown of the voltages.

./hvmon-read

5

Otherwise the Menu is as follows:

 ---------------------------------------------------------------------------------------

      Global          |        Channels          |  Status   

 ---------------------------------------------------------------------------------------

 1 - Status                    | 11 - Clone channel       |  

 2 - Force read             | 12 -                     |  

 3 - Force read Temps | 13 -                     |  

 4 - All HV on               | 14 -                     |  

 5 - All HV off               | 15 -                     |  

 6 - Save conf file        | 16 - Alter parameters    |  

 7 -                               | 17 - Read from file      |  

 8 - On list                    | 18 - Reset All Status'   |  

 9 - Off list                    | 19 - Print Configure     |  

 ---------------------------------------------------------------------------------------

  Time up -  s           

 ---------------------------------------------------------------------------------------

  Temps (0,1,2) =(C,K,F):

I roughly (~10%) checked the efficiency for 4 of the peaks from  171025_1222_1355_152EuCloverCal.root.

I checked the peaks at 122, 245, 344, and 1408. The indication is an efficiency of 6.9,  9,   9,8, and 2.6 % for these gamma rays repectively.

Previously the efficiency was 11.1, 7.1, 5.3, and 1.6% . This indicates a reduction in efficiency below ~200 keV (because of YSO) and otherwise there is an increase in efficiency from 40% at 245 keV and up to 65% at 1480 keV.

A more complete analysis will come later.

Both COVER detectors are installed in place.
See photos.

Detector D4: left of the beam
Crystal distribution:
BLUE-BLACK
RED -GREEN

Detector G7: right of the beam
Crystal distribution:
BLUE-BLACK
RED -GREEN

Cables connected. Some work on noise minimization.
Resolution improved for D4-Black which was poor 
on July. Otherwise similar behaviour.

See spectra with 137Cs and 60Co sources ta the center.
File:161011_1805_CLOVER_CsCo.root
We are using the calibration from July which
works surprisingly well for all except G7Red
(explains double peak in spectrum)

More checks to be done.

After removing the lead wall.

Start: 21:45
DLT: 161108_2145_717273Ni_001.dlt

During the first part we were changing the degrader.
Now they remove the C-6mm target.

So we increase the adjustable degrader to 5.4mm 
keeping the 8mm thick plate for implantation.

We stop and start a new DLT file at 22:02
DLT: 161108_2145_717273Ni_002.dlt
Stop: 22:48


NO ROOT FILE!

F7 CH2 F11 Empty

We remove the 8mm Al plate from inside BRIKEN infront of AIDA
Move AIDA to the central position. We put a 5mm Al plate in front
of the degrader.

Degrader 5.4mm + 5mm

Start: 22:51
DLT: 161108_2251_717273Ni_03.dlt

We remove some degrader:2.2mm off
Then we start a new run: 004

Stop:23:26
To put the C-6mm target in F11

ROOT file: 161108_2323_717273Ni.root

F7 CH2 F11 C-6mm
Total degrader thickness 6mm

Start:
RUN: 005
File: 161108_2251_717273Ni_005.dlt
Stop: 23:59
Run: 005

Rates:
F11R: 2600 cps
BRIKEN: 740 cps

Root file: 161109_0005_717273Ni.root


Counts: 
F11R: 5.36294e+06
BRIKEN: 1.42823e+06
Corr_BR_F11R: 1.41452e+06