15:15

Temperature setpoint = 113 K

Target density is OK for now. S1 vaies between 2E-8 and 3.5E-8 mbar. E4 between 1E-9 and 1E-8 mbar.

Detector motors functioning well. Moving between 23.1 mm and 67.43mm. Move in and move out counters the same. Correlation scalar 8 for detectors moving is seen on aida1

Rutherford rate peak varies between 10^3 peak height when fully in and ~10^2 when fully out. No peak from halo seen in rate.

Beam intensity ~ 1E8

Merger OK

Data rate ~ 1700 kb/sec

Run is Run 87 - started 10:34

Data spy restarted at 15:00 so only include Run87 data.

Leakage current = 3.205 uA

Fee Temperatures OK

System checks OK - wr fails

         Base         Current     Difference
aida01 fault      0xab60 :      0xaba3 :      67  
aida02 fault      0x88d3 :      0x8914 :      65  
aida03 fault      0x23aa :      0x23ed :      67  
aida04 fault      0x15d7 :      0x161a :      67  
aida05 fault      0x2f03 :      0x2f20 :      29  
White Rabbit error counter test result: Passed 0, Failed 5

Understand the status reports as follows:-
Status bit 3 : White Rabbit decoder detected an error in the received data
Status bit 2 : Firmware registered WR error, no reload of Timestamp
Status bit 0 : White Rabbit decoder reports uncertain of Timestamp information from WR

Avg ring Pressure = 5.5E-10 mbar

16:45

Temperature setpoint = 113 K

Target density is OK for now. S1 vaies between 2E-8 and 3E-8 mbar. E4 between 1E-9 and 1E-8 mbar.

Detector motors functioning well. Moving between 23.1 mm and 67.43mm. Move in and move out counters the same. Correlation scalar 8 for detectors moving is seen on aida1

Rutherford rate peak varies between 10^3 peak height when fully in and ~10^2 when fully out. No peak from halo seen in rate.

Beam intensity ~ 1E8

Merger OK

Data rate ~ 1300 kb/sec

Temperatures OK

Leakage current ~3.205 uA

System chacks OK - wr fail

         Base         Current     Difference
aida01 fault      0xab60 :      0xaba3 :      67  
aida02 fault      0x88d3 :      0x8914 :      65  
aida03 fault      0x23aa :      0x23ed :      67  
aida04 fault      0x15d7 :      0x161a :      67  
aida05 fault      0x2f03 :      0x2f20 :      29  
White Rabbit error counter test result: Passed 0, Failed 5

Understand the status reports as follows:-
Status bit 3 : White Rabbit decoder detected an error in the received data
Status bit 2 : Firmware registered WR error, no reload of Timestamp
Status bit 0 : White Rabbit decoder reports uncertain of Timestamp information from WR

Avg ring pressure ~ 4.4 E-10 mbar

Statistics similar to previous check.

detector position

out: 23.1mm

in: 67.4mm

tape: next file

gas jet S1: 2.0-2.2 ** -8

07:00
Target density is hovering between 2.0e-8 and 2.3e-8

04:40
Target density is hovering between 2.0e-8 and 2.3e-8, sometimes dipping below 2.0e-8

We will conduct a temperature walkthrough while there is no beam,
04:40: setpoint 125K
04:46 setpoint 95K
04:56 setpoint 108K
04:59 setpoint 110K
05:00 setpoint 112K (here improved from 110K)
05:03 setpoint 114K
05:08 setpoint 113K

05:11
113K seems good, fluctuating between 2.3e-8 and 3.1e-8
will leave temperature here

02:25
Zoran was unable to ignite the ion source.

He has given some parameters to the control room so they can wiggle stuff around and try and ignite it.
He also said it may at some point ignite itself.
In worse case scenario, the person who usually manages the ion source will come in from 7am-8am, read Zoran's notes and try and get it working again.

Also target density seems a little worse but still hanging above 2e-8 to 2e-4

00:38
Intensity in the ring dropped by 2 orders of magnitude to 5e5 on injection

Lost rutherford rate (as seen in last e-log post)
All pressures seem fine

00:48
Called main control room, said they will take a look

00:59
Servo motor control restarted and homed

01:11
Ion source is confirmed to be off
Zoran will try and fix it, should take 1hr or so and not guaranteed to work.

00:30
Pressure in S1 slightly decreased from before but still high enough to measure data.
One new count at 20MeV

Target density at S1: 2e-8 - 2.7e-8
Pressures OK (one small spike just before 00:00 in YR08)
System Checks OK
White rabbit fail diff: 49
Data write speed: ~1.4Mb/s
Beam intensity at injection: ~7.7e7
Cryo Temp Setpoint: 110K

(Beam intensity in ring dropped as I was writing which is why there is no rutherford peak on exRate image)
 

Ring current 6.67e7 particles/s

pressure at S1: 2.3-2.8e-8

Merger, Tape server (WS3): 1574 kB/s, writing ok

Leakage current (WS4): 3.20 uA

DAQ (WS2): temperature checked, clock status: ok, adc calibration: ok, white rabbit check: failed

Online monitoring (WS 5): done

no change:

Check Clock Status': Passed 5, Failed 0

Check ADC Calibration: Passed 5, Failed 0

'Check the White rabbit decoder status: Passed 0, Failed 5

target density at S1: 2.2-2.7e-8

temp: 110K

beam at injection: 7e7

no change:

Check Clock Status': Passed 5, Failed 0

Check ADC Calibration: Passed 5, Failed 0

'Check the White rabbit decoder status: Passed 0, Failed 5

target density at S1: 2.3-2.7e-8

temp: 110K

beam at injection: 7e7

A target temperature walkthrough has been initiated at 20:41 since the target density at S1 had slightly decreased (with ~0.1-0.2)

Current temprature 116K

set to 126K at 20:41

set to 95K at 20:47:30

set to 108.5K at 21:01:30, at this temperature was a sweetspot observerd for target density.

set to 109.7 at 21:08:30

set to 110K at 21:13:30 - we keep at this value for a while. the values at S1 are changing between 2.2-2.9e-8

no change:

Check Clock Status': Passed 5, Failed 0

Check ADC Calibration: Passed 5, Failed 0

'Check the White rabbit decoder status: Passed 0, Failed 5

target density at S1: 2.1-2.3e-8

temp: 116K

beam at injection: 7e7

no change:

Check Clock Status': Passed 5, Failed 0

Check ADC Calibration: Passed 5, Failed 0

'Check the White rabbit decoder status: Passed 0, Failed 5

target density at S1: 2.1-2.4e-8

temp: 116K

no change:

Check Clock Status': Passed 5, Failed 0

Check ADC Calibration: Passed 5, Failed 0

'Check the White rabbit decoder status: Passed 0, Failed 5

target density at S1: 2.1-2.4e-8

temp: 116K

Beam issues due to too long storage time in the last hours. Motors moved out and not moving.

Decreased storage time to 70 s. Seems OK now. Restarted motor movement as before

Started new run R86

'Check Clock Status', 'Check ADC Calibration' and 'Check the White rabbit decoder status' : no change

New run R84

Attempting to sync pneumatic movement with ring. Still see something on t out -> p out

Command to move out was being given relative to the wrong time.

Fixed it. Still see one-two events every time we move out around 4-6 MeV. Attempted to greatly increase time before next injection - no difference. Microphonics from moving the detectors? It's just one-two counts on entire detector, acceptable.

New run R85

Now moving in/out

Potentiometer: 23.10 mm to 67.19 mm

'Check Clock Status', 'Check ADC Calibration' and 'Check the White rabbit decoder status': no change

'Check Clock Status', 'Check ADC Calibration' and 'Check the White rabbit decoder status': same

old potentiometer position 19.1 mm

new run number: 83

new potentiometer position : 27.58 mm