Start: 14:25

Stop: 14:39 (partial, no beam, not erased), 14:58 (partial, no beam, not erased), 15:16  (partial, no beam, not erased),

Stop: 14:39 (next day, a new spectrum was added, AIDAGF11)

Root: 201906041439_background_AIDA_in.root, 201906041458_background_AIDA_in.root, 201906041516_background_AIDA_in.root

Comment: They enter to change the F3, F7 plastics. So the beam was stopped.

Beam from approximately 15:25, syncronization pulse was sent. Rate at F7 9.4 kHz

We have been running with Co and Cs for the weekend to check the overall stability.

Seems that the detectors did not move too much. Please note that the Ref detector was plugged incorrectly in channel 8

instead of channel 10 of the ancilliary card.  A new run will be done to include the reference detector.

It looks that the calibration might be sligthly shifted for detectors 12, 13,17 (Dynodes)

Short file with the strong Co source and Cs source. To test stability
Start:11:32

Stop: 14:04

Root file: 201905201404_137Cs60Co_calib.root

Rates; 53 kHz (Dynodes), 47 kHz (anodes) So thresholds should be checked

Anode 12 (calibrated) has a large jump, because the cable in the digitizer was not fully plugged.

We need to recalibrate them. The alignment was done originally with Dynodes.

Only a very small correction was needed (at the level of 0.5 V) for the raw spectra of det 6,12,13,17 (raw Dynodes)

New voltages

DET01        │ 599.0 V 1500.0 uA  598.5 V   89.5 uA On                 │00.0001
DET02        │ 548.5 V 1500.0 uA  548.0 V   82.5 uA On                 │00.0002
DET03        │ 529.0 V 1500.0 uA  529.0 V   79.5 uA On                 │00.0003
DET04        │ 699.0 V 1500.0 uA  698.5 V  105.0 uA On                 │00.0004
DET05        │ 452.0 V 1500.0 uA  451.5 V   67.5 uA On                 │00.0005
DET06        │ 820.5 V 1500.0 uA  821.0 V  123.0 uA On                 │00.0006
DET07        │ 559.0 V 1500.0 uA  559.0 V   83.0 uA On                 │00.0007
DET08        │ 486.0 V 1500.0 uA  486.0 V   73.0 uA On                 │00.0008
EMPTY09      │   0.0 V 1500.0 uA    1.0 V    7.5 uA Off                │00.0009
EMPTY10      │   0.0 V 1500.0 uA    0.5 V    0.0 uA Off                │00.0010
EMPTY11      │   0.0 V 1500.0 uA    1.0 V    0.5 uA Off                │00.0011
EMPTY12      │   0.0 V 1500.0 uA    0.0 V    0.0 uA Off                │02.0000
DET11        │ 578.0 V  300.0 uA  578.0 V   86.5 uA On                 │02.0001
DET12        │505.5  V  300.0 uA  506.0 V   76.0 uA On                 │02.0002
DET13        │ 624.5 V  300.0 uA  624.5 V   92.5 uA On                 │02.0003
DET14        │ 650.0 V  300.0 uA  650.0 V   96.0 uA On                 │02.0004
DET15        │ 657.0 V  300.0 uA  657.0 V   98.0 uA On                 │02.0005
DET16        │ 529.5 V  300.0 uA  529.0 V   78.5 uA On                 │00.0006
DET17        │ 462.5 V  300.0 uA  462.0 V   68.0 uA On                 │00.0007
DET18        │ 518.0 V  300.0 uA  518.0 V   77.5 uA On                 │00.0008
EMPTY19      │   0.0 V  300.0 uA    0.0 V    0.0 uA Off                │00.0009
EMPTY20      │   0.0 V  300.0 uA    0.0 V    0.0 uA Off                │00.0010
REF01        │ 800.0 V 1500.0 uA  800.0 V  174.0 uA On                 │00.0011
EMPTY12      │   0.0 V 1500.0 uA    0.0 V    0.0 uA Off                │02.0000

A file with Co and Cs was collected for 10 min

201905201444_137Cs60Co_align.root

after a minimal correction of the voltages (mentioned in the earlier entry). After this a new calibration was performed.

Rates per detector of the order of 1.7 kHz, Ref det rate 63 Hz, with the pulser set to 10 Hz

Now a  check on the other available sources will be performed.

Until now the used Co source was CO401(2530) , which is rather strong (corresponds to key 6)

and the Cs source was CS401 (4763) (key 8). This Cs is fine.

Now the sources on the red box (color ?) will be explored.

Configuration file: 20190520_Conf.xlsx

Start: 15:10

Stop: 16:08

Positioned in the center, with the source holder.

List mode files: Co60_source_201905201510_030.dlt ... Co60_source_201905201510_034.dlt

Root file: 201905201608_60Co.root

Source: 60Co, red box, source number: CD395. 1 mm plastic (density 1.23 g/cm3)

Rates:

Dynodes: 20.5 kHz

Anodes: 12.5 kHz

Start: 16:25

Stop: 17:25

Background in the same conditions as before (right after the Co measurement)

Listmode: Background_201905201614_035.dlt .... Background_201905201614_036.dlt

Root file:  201905201725_background.root

Rates:

Dynodes: 8.5 kHz

Anodes: 1.8 kHz

Anod1: 120 Hz

Anod15: 173 Hz

Dynod1: 80 Hz

Dynod 15: 166 Hz

Pulser set to 10 Hz

Rate of Dynode 5, 15, 17  seem a little higher than the others. The same for Anode 11, 15, 17

Not clear why the Dynodes rate is so high compared with the anodes. There is not such a big

difference in rate of the individual detectors.  

(Dynodes and Anodes rates are taken from the Python script written by Jorge, that correspond to the full card)

Later it become evident that probably we need to increase  the threshold of detector 8 again (Dy08).

Before it was not like that, but now seems to be triggering in the noise.

Dynode 08 threshold was changed from 675 to 790. Now the rate in this detector is fine.

The global rates for the cards (dynodes and anodes) are similar.

Start: 18:06

Stop: 20:20

Rates: 14 kHz (Dynodes) 12.7 kHz (anodes)

Lmd: Co60_source_201905201806_037.dlt ...Co60_source_201905201806_045.dlt

Root:  201905202020_60Co.root

Start: 20:30

Stop: 09:54

Lmd: Background_201905202030_046.dlt ...Background_201905202030_051.dlt

Root: 201905210954_background.root

Root and Conf file attached

Start: 10:25

Stop: 11:26

lmd: Cs137_source_201905211025_052.dl ...Cs137_source_201905211025_053.dlt

root: 201905211126_137Cs.root

Rates: 8.0 kHz (Dynodes), 8.1 kHz (Anodes)

Comment: detector  3  HV was increased by 1 V ( from 529 to 530 V). Used source CS401, 4763 as in earlier measurements.

The red box Cs source is too strong. We had 150 kHz  in the cards.

Details of the source:137Cs, 8.23x 10**3 Bq at 2010/03/16, ID: CS401, 4763

Root file attached, and tested

Start: 11:34

Stop: 13:52

Rates: 1.7 kHz (Dynodes) 2.0 kHz (Anodes)

Root: 201905211352_background.root

Lmd: Background_201905211134_054.dlt

After a fantastic shower, since it is raining cats and dogs ....

Start: 14:11

Stop: 15:01

Lmd: Co60_source_201905211411_055.dlt ...Co60_source_201905211411_058.dlt

Root: 201905211501_60Co.root

Rates: 13.8 kHz (Dynodes), 12.4 kHz (anodes)

Source details: Taken from the red box. No CD395, 1 mm plastic (1.23 g/cm3)

338.4 kBq (1 July 1990). Type ASSET81 to drawing VZ-477/1E

Root file tested and attached

This is a short list of the identified useful sources:

60Co, key 3, red box, CD 395, already used

137Cs, key 8, 4753, CS401, activity ???, already used

22Na, key 5, 700, NA401, activity 8.9 kBq/s

152Eu, key 9, 272, EU401, activity 6.6 kBq/s

The activities are according to the Sunflower homepage. It was wrong for the Cs source which is under key 8

Start: 15:08

Stop: 15:42

Rates: 19 kHz (Dynodes), 16 kHz (anodes)

Lmd: Na22_source_201905211508_059.dlt ...Na22_source_201905211508_062.dlt

Root: 201905211543_22Na.root

Source details: 22Na, ID NA 401, 700, 1.038 x 105 Bq (2010/03/16), key 5,

It appears in the Sunflower home page as 09-7007 with an estimated activity of 8.9 Bq/s today

Comment; seems dynode 4 moved a little up. Most detectors keep a reasonable alignment

When overlay was marked, it did not save the root file. Root attached and tested

Start: 15:49

Stop: 16:49

Lmd: Background_201905211549_063.dlt

Root: 201905211649_background.root

Rates: 1.7 kHz (dynodes) 1.9 kHz (anodes)

Comment: All measurements have been done with the pulser set to 10 Hz. We should think if this have to be increased

Start: 16:56

Stop: 17:46

Rates: 12.6 kHz (dynodes), 12 kHz (anodes)

Lmd: Eu152_201905211656_064.dlt ... Eu152_201905211656_066.dlt

Root: 201905211746_152Eu.root

Source details: 152Eu, ID: EU401, 272, 1.06x10**4 Bq (2010/03/16), key 9

Comments:

Start: 17:53

Stop: 18:53

Rates: 1.8 kHz (dynodes),  1.9 kHz (anodes)

Lmd: Background_201905211753_067.dlt

Root:  201905211853_background.root

Comments: We will continue measuring, but only for a while with Listmode

Start: 18:55

Stop: 20:01

Lmd: Background_201905211855_068.dlt

Root:201905212001_background.root

Rates: 1.7 kHz (Dyn), 1.9 kHz (Anodes)

Comment: all measurements of today can be used to characterize the full detector.

Sources were possitioned in the center of the spectrometer, with the piece created at Ific

Start: 20:04

Stop: 14:11

Rates: 1.8 (Dynodes) 2.0 kHz (anodes)