14.00 CARME vacuum c. 1.8e-10 mbar - see attachment 1

open water inlet/outlet taps

NIM bin (MACBs, Ortec 480 Pulser, CAEN N1419ET) switched ON

USB-controlled ac mains relay switched ON - water & interlock LEDs active

Require VETAR2 (previous returned to Nik Kurz) and network switch (currently with AIDA@DESPEC)

Turbo pump ON - normal operation

Ion pumps ON - normal operation

16.30 ML informs us that ambient temperature of CRYRING cave has been increased from c. 16 deg C to c. 21 deg C and that this is likely the cause of the change in vacuum 
pressure in YR09 and the rest of the storage ring.

obtained VETAR2 and crate 

anydesk restarted

Pulser walkthrough taken for motor position 23.1mm and motor position 67.43mm.

Points taken at 30,50,70,90,110,130,150,170,190,210,230 for 23.1mm position and 230,210,190,170,150,130,110 for 67.43mm position.

Motors moved to fully OUT position and pin put back in. Current positions before closing program 19.1mm and 19.57mm. 

Fee power OFF. Fee power module switched OFF and AC mains cable unplugged.  

Bias suppply OFF. NIM crate for bias module switched OFF. 

Water supply OFF

CARME ion gauge turned back ON

22:30 Shift handed over. DAQ OK. Target OK. Beam OK.

00:22 Temperatures OK

Stats OK

Good events OK

Scalers OK

System wide checks as usual - WR fails by 68 ns

Leakage current OK

Target OK

Motors OK

Pressure in ring 5E-10 mbar OK

Beam OK

02:26 - All OK as above

WR now fails by 80

Data rate ~800 KB/s

03:40 All OK as above

Data rate back to ~ 1900 KB/s

04:20 All OK as above

Started compressing files in WS3, monitor 1

Noticed bias is not as stable as it has been so far, but no reason for concern. See attach.

04:30 Saw a spike in counts similar to beam halo. See attachment. Did not see it before. No effects on leakage current. To be checked offline.

06:00 Could not see any more spikes

All other checks OK as before.

Data rate back to ~1000 Kb/s

06:32 Requested beam off for end of beamtime.

Left DAQ on - run R88

Turning off jet target as per Nikos instructions

Final cleanup + pulse walkthrough to be done by JM and OH later today.

Target nozzle removed - pressure in S1 now 1.93E-8 mbar

Valves closed

Entering cave to switch compressor off and change N backing pressure to 10 bar.

22:16

Temperature setpoint = 113k

Not observed noise burst again

Target density OK, S1 between 2E-8 and 3E-8mbar, E4 between 1E-9 and 1E-8 mbar.

Detector moving well, potentionmer between 23.1 mm and 67.43 mm, move in/move out counters the same. Correlation scalar on aida1

Ruthrford peak varies between 10^3 and 10^2 peak height depending on detector position, noise rate also varies with position.

Beam intensity ~1E8

Merger OK

Data rate ~ 1200 kb/sec

Temperatures OK

System checks OK - wr fails

         Base         Current     Difference
aida01 fault      0xab60 :      0xaba4 :      68  
aida02 fault      0x88d3 :      0x8915 :      66  
aida03 fault      0x23aa :      0x23ee :      68  
aida04 fault      0x15d7 :      0x161b :      68  
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

Ring pressure oscillation is 30 minute cycle on all areas of the ring.

20:25

Observed short burst of low energy noise on aida1, lasted <30s (attachment 8).

Temperature setpoint = 113 K

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

Detector moving well between 23.1 mm and 67.43mm, move in and move out counters the same. Correlation scalar on aida1.

Rutherford peak varies between 10^3 and 10^2 depending on detector position, noise peak varies with detector position -> lower further in.

Beam intensity ~1E8

Merger OK

Data rate ~ 1900 Kb/sec

Leakage current = 3.208 uA

Temperatures OK

System checks - wr fails

         Base         Current     Difference
aida01 fault      0xab60 :      0xaba4 :      68  
aida02 fault      0x88d3 :      0x8915 :      66  
aida03 fault      0x23aa :      0x23ee :      68  
aida04 fault      0x15d7 :      0x161b :      68  
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 = 5.5 E-10 mbar. Ring pressure tends to oosciilate between ~4 and 5.5 E-10 mbar

21:21

Burst of noise not observed again

Temperature setpoint = 113 K

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

Detector moving well between 23.1 mm and 67.43mm, move in and move out counters the same. Correlation scalar on aida1.

Rutherford peak varies between 10^3 and 10^2 depending on detector position, noise peak varies with detector position -> lower further in.

Beam intensity ~1E8

Merger OK

Data rate ~ 1900 Kb/sec

Leakage current = 3.206 uA

Temperatures OK

System checks - wr fails

         Base         Current     Difference
aida01 fault      0xab60 :      0xaba4 :      68  
aida02 fault      0x88d3 :      0x8915 :      66  
aida03 fault      0x23aa :      0x23ee :      68  
aida04 fault      0x15d7 :      0x161b :      68  
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 5.4E-10 mbar

18:21

Temperature setpoint = 113k

Target density OK S1 varies between 2E-8 and 2.5E-8 mbar, E4 between 1E-9 and 5E-9 mbar. (slightly lower than previous check)

Detectors moving well between 23.1mm and 67.43 mm, Move in and move out counters the same. Correlation scalar is on aida1

Rutherford peak varies between 10^3 and 10^2 depending on detector position. No halo peak in rate. Noise peak varies from ~100 peak height when fully in to ~400 peak height when fully out.

Beam intensity ~ 1E8

Merger OK

Data rate ~ 1800 kb/sec

Leakage current ~3.21 uA

Temperature 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 = 4.4 E-10 mbar

19:20

Temperature setpoint = 113k

Target density OK S1 varies between 2E-8 and 3E-8 mbar, E4 between 1E-9 and 1E-8 mbar. (slightly higher than previous check)

Detectors moving well between 23.1mm and 67.43 mm, Move in and move out counters the same. Correlation scalar is on aida1

Rutherford peak varies between 10^3 and 10^2 depending on detector position. No halo peak in rate.

Beam intensity ~ 1E8

Merger OK

Data rate ~ 1800 kb/sec

Leakage current ~3.20 uA

Temperature OK
System checks  OK - wr fails

         Base         Current     Difference
aida01 fault      0xab60 :      0xaba4 :      68  
aida02 fault      0x88d3 :      0x8915 :      66  
aida03 fault      0x23aa :      0x23ee :      68  
aida04 fault      0x15d7 :      0x161b :      68  
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 = 4.3 E-10 mbar

Statistics similar to previous check.

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