F7 OUT F11 C-6mm

Start: 00:09
Run: 006
DLT: 161108_2251_717273Ni_006.dlt

Rates:
F11R: 1200 cps
BRIKEN: 270 cps (22.5%)

They  were tuning during this run.

Stop: 0042

Root file: 161109_0042_717273Ni.root

152Eu source inside BRIKEN for CLOVER calibration.
Also calibration of Si-dE with 60Co source
and AIDA_PL calibration  with 60Co source.

File: 170328_1707_152Eu_CloverCal.root

Calibration parameters in file:
170328_1707_CloverCalibration.ods
(attached)

Date: 29/03/2017

Start: 22:13
BRIKEN run: 0
AIDA Run: R13_18
BigRIPS run: 140
DLT: 170329_2213_Mg40_000.dlt

BRIKEN Rate: 6cps
F11 Rate: 

Stop: 23:10
BRIKEN run: 0
AIDA Run: R13_35
BigRIPS run: 140 

Root file: 170329_2213_2310_B000_Mg40.root

Observations:
- We should increase the gain of F11 plastic (now a bit to small)
say by a factor of 2. Calibration is probably wrong!?

Date: 29/03/2017

Start: 23:13
BRIKEN run: 1
AIDA Run: R13_36
BigRIPS run: 141
DLT: 170329_2213_Mg40_001.dlt

BRIKEN Rate: 6cps
F11 Rate: ?

Date: 30/03/2017
Stop: 00:18
BRIKEN run:001 
AIDA Run:R13_52
BigRIPS run:141

Previous online not erased
Root file:170329_2213_0018_B001_Mg40.root

Observation: AIDA crash at 23:59

We observed 6 pm LN2 filling of both clovers on Monday Nov 5th.

D4 went full within reasonable time of below 10 minutes.

Filling of G7 was stopped by "emergency sensor" after about 15 minutes of filling.

Likely the temp sensor at the LN2 overflow pipe of G7 should be changed.

The clock at LN2 fill system is off by about 25 minutes (filling comes later than set at the control unit.)

"The clock at LN2 fill system is off by about 25 minutes (filling comes later than set at the control unit.)"

Yes, This is how it always was.

"Filling of G7 was stopped by "emergency sensor" after about 15 minutes of filling. Likely the temp sensor at the LN2 overflow pipe of G7 should be changed."

You can put this on a different line of the fill system....

DUMMY

Date: 31/03/2017
Start: 06:30
BRIKEN run: 28
AIDA Run: R16_451
BigRIPS run: 171
DLT:170331_0630_Mg40_028.dlt

BRIKEN Rate:40 divided by 10 (clock is 10Hz)
F11 Rate:11


Date:  31/03/2017
Stop: 07:57
BRIKEN run: 29
AIDA Run: R16_471
BigRIPS run: 171

Root file:170331_0012_0757_B028029_Mg40.root
OBSERVATIONS:Increase run file by accident. BigRIPS switched to 173

 According to the reply from Japan Radioisotope Association, the accuracy of the Cf-252's intensity is +0%/-15%.

( "+0%" is important, because 3.7 MBq is a standard limit for radio-active sources  in Japan.)

Resolution check using 40K 1460 keV line 
in the background measurement overnight
(File: 171022_0126_1101_bck.root)

D4: 2.9 1keV @ 1461.8 keV
G7: 2.98 keV @ 1460.0 keV

With detectors still on the floor we check signals and found
that D4 gives no signal with PA power.  Two power supplies/cables were checked.
The detector was still working just before Jungclaus experiment. In July it was working.

Temperature monitors OK: 76-80 units

We mount both CLovers in position and make all connections.


We apply HV and check the resolution of G7.

Source: 152Eu
File: 181105_1550_CloverCheck_152Eu.root

As can be  seen in the attached figure the calibration used last year
is still pretty good

Resolution @ 1408 keV

G7 black: 2.75keV
  NO.   NAME      VALUE            ERROR          SIZE      DERIVATIVE 
   1  Constant     6.57807e+02   1.35347e+01   4.63240e-02  -7.68897e-07
   2  Mean         1.40766e+03   1.96681e-02   6.71225e-04   5.14533e-03
   3  Sigma        1.16983e+00   1.52231e-02   1.41407e-05  -1.28285e-02

G7  red: 2.97keV
  NO.   NAME      VALUE            ERROR          SIZE      DERIVATIVE 
   1  Constant     5.60626e+02   1.17448e+01   3.69357e-02   1.06287e-06
   2  Mean         1.40659e+03   2.29862e-02   6.70713e-04   1.36869e-04
   3  Sigma        1.26305e+00   1.62145e-02   1.30239e-05  -1.44151e-02

G7 green: 2.75keV
  NO.   NAME      VALUE            ERROR          SIZE      DERIVATIVE 
   1  Constant     7.87830e+02   1.48889e+01   3.68407e-02   5.57077e-06
   2  Mean         1.40597e+03   1.75988e-02   6.70417e-04  -2.47334e-03
   3  Sigma        1.17167e+00   1.41220e-02   9.59214e-06   1.55873e-02

G7 blue: 2.73keV
  NO.   NAME      VALUE            ERROR          SIZE      DERIVATIVE 
   1  Constant     4.99089e+02   1.19364e+01  -6.77351e-03  -4.15987e-06
   2  Mean         1.40489e+03   2.17210e-02   2.57134e-05   2.38923e-03
   3  Sigma        1.16057e+00   1.73778e-02   3.14777e-06   2.01018e-02


FWHM:

Green and Red channels were repaired by crimping and securing the grounding of the cables and fixing the cables securely to the table. 

All problems during the repair process were visible on the scope. See example attatched. 

Calibration is as:

Edit(10-21): NB realized calibration was not performed on the raw spectra, but on the previously calibrated ones. These values are wrong!

Calculation also attached

FWHM (keV) @ 1408 values were: 

Num Col FWHM (now) FWHM (before @ 1333)

G7 Red 3.06 2.77

G7 Green 2.81 2.84

G7 Blue 2.93 2.67

G7  Black  2.88 2.64

D4 Red 2.61 3.41

D4 Green 2.79 3.35

D4 Blue 2.88 3.60

D4 Black 3.17 4.85

1. Login to briken@ribfana03.riken.jp

2. Check if the ridf-file you want to convert is in the directory; /home/briken16/rawdata/bigrips/

3. Login to anaroot; type "anarootlogin"

4. Make your account as your name, and create your directory.

5. login to root; "root -l"

6.  root[ ] .L MakeFullBigRIPSTree_BRIKEN.C+

7.  root[ ]  MakeFullBigRIPSTree_BRIKEN("    full name of ridf-file    ",  Brho34 ,  Brho56 ,"  full name of output file  ")

You can check Brho34 and Brho56 in  --->  http://bripscnt01.rarfadv.riken.jp/runsum/index.php

 Find the link to the summary page in the "file" column. 

 For example: MakeFullBigRIPSTree_BRIKEN("radiioff0371.ridf",  7.176,   6.905, "test.root")

Drying of preamplifiers

PA8, PA9 and PA10 are removed and brought to a dryer box
to stay overnight and see if the situation with spurious signals
improves as suggested by Mesytec.
Extra drying in the morning with a hair dryer.

After Al degrader with the optimized width of 13 mm, the energy loss in Long Plastic Scintillator is 546(2) MeV at F11.

This value depends on 

Measurement overnight

Start: around 1:00
Stop: 9:35
File: 161105_0935_BackgroundOvernight.root

The background level after removing the 252Cf source
from the hall dropped to 0.4n/s.

During the night there were neutron rates up to 120 n/s (see figure)

There is a huge spike in the rates which coincides with the time of 
LN2 filling. One can see spike in several spectra (not in all)
One can see also a structure superposed

The rate per rings is also shown. The outer rings see
a higher rate.

Also shown is the comparison of He107 one  (blue) of the outer ORNL2 tubes
with He084 one (red) of the inner ORLN2. The increase in count rate
is about 30%. 

Also shown is the comparison of two external tubes on the top and the bottom:
He107 (blue) and He137 (red), ORNL2 tubes.  There is no increase in count rate.

Also shown is the comparison of a tube above the lead shielding He028 (blue)
and behind the lead shielding He048 (red), UPC tubes. There is no difference.

There is also  comparison between the rate in the CLOVERS and BRIKEN.
Without beam the rate in the Clovers is around  100 g/s against 0.4 n/s in BRIKEN
At the maximum both rates are similar around 130 c/s.

There is also a plot of the gamma-neutron correlation.
We see that there are neutrons which are detected before
the gammas. A possible explanation several neutrons are produced
one is detected first the second later produces a gamma.

Updated run protocol

Gasific-7.0 Short Manual (Preliminary)