Optimised motor motion during run R58

Moved 2 mm in (20.3 potentiometer)

29.47 potentiometer

36.5 potentiometer

(started moving pneumatic)

64.36 potentiometer

74.03 potentiomater (servo in by 10 mm)

Moved in, collected counts for 5 minutes, moved out, waited for re-injection.

20.3 - 400 counts on the Rutherford peak, bins 125-131 on lowEnergyExTotalDSSD0

20.47 - 646

36.5 - 827

64.36 - 3900

74.03 - 10040

Based on Rutherford rate ratio, estimated we are 40-50 mm away from interaction point, i.e. beam roughly 1-2 cm on outer half of ring which may be consistent with BPM measurement in YR08

Decided to use 74.03 mm for data collection.

Started data acquisition on R59 at 17:27

Beam 3E7 at injection, 600 second storage, 3 second between cycles

Target pressure 1.3E12 based on 8.21E18 x S1=1.6E-8

11:55
Temps OK
System Check OK
White Rabbit fail diff: 102
Write Speed: ~1.2Mb/s
Leakage Current: ~3.47uA
Cryo Temp = 129.2K setpoint (unchanged)
Pressures stable

AVG Pressures:
YR07: 1.99e-10mbar
YR08: 2.6e-9mbar
YR09: 1.03e-9mbar
YR10: 1.7e-10mbar

We are moving the detector in run 56

10:00
Temps OK
System Check OK
White Rabbit fail diff: 102
Write Speed: ~1.2Mb/s
Leakage Current: ~3.47uA
Cryo Temp = 129.2K setpoint (unchanged)
Pressures stable

AVG Pressures:
YR07: 1.93e-10mbar
YR08: 2.64e-9mbar
YR09: 1.13e-9mbar
YR10: 1.55e-10mbar

09:00
Temps OK
System Check OK
White Rabbit fail diff: 101
Write Speed: ~1.2Mb/s
Leakage Current: ~3.47uA
Cryo Temp = 129.2K setpoint (unchanged)
Pressures stable

AVG Pressures:
YR07: 1.88e-10mbar
YR08: 2.28e-9mbar
YR09: 9.15e-10mbar
YR10: 1.52e-10mbar

08:00
Temps OK
System Check OK
White Rabbit fail diff: 99
Write Speed: ~1.0Mb/s
Leakage Current: ~3.47uA
Cryo Temp = 129.2K setpoint (unchanged)
Pressures stable

AVG Pressures:
YR07: 2.06e-10mbar
YR08: 2.71e-9mbar
YR09: 1.06e-9mbar (up from previous check)
YR10: 1.78e-10mbar

07:00
Pressure Stable
Temps OK
System Check OK
White Rabbit fail diff: 90
Write speed: ~1Mb/s
Leakage Current: 3.47uA
Cryo Temp Setpoint: 129.2K (unchanged)

AVG Pressures:
YR07: 1.66e-10mbar
YR08: 1.93e-9mbar
YR09: 7.63e-10mbar
YR10: 1.26e-10mbar

05:55
Temps OK
System Check OK
White Rabbit fail diff: 90
Write Speed: ~1.0Mb/s
Leakage Current: ~3.47uA
Cryo Temp = 129.2K setpoint (unchanged)
Pressures stable

AVG Pressures:
YR07: 1.79e-10mbar
YR08: 2.21e-9mbar
YR09: 8.64e-10mbar
YR10: 1.36e-10mbar

04:52
Pressure seems to be climbing a little but still stable (just peaked at end of check)
Temps OK
Write Speed: ~1.0Mb/s
System Checks OK
White Rabbit fail diff: 90
Leakage Current: 3.47uA
Cryo Temp: 129.2K (unchanged)

AVG Pressures:
YR07: 1.79e-10mbar
YR08: 2.3e-9mbar
YR09: 9.46e-10mbar
YR10: 1.41e10mbar

Avg pressures plots for last hour and last 6 hours attached.

03:52

Temps OK

System Checks OK

White rabbit diff: 90

Data rate: 1.2Mb/s

Leakage Current: 3.474uA

Cryo temp = 129.2K (unchanged)

Pressures stable

AVG Pressures:
YR07: 1.74e-10mbar
YR08: 2.15e-9mbar
YR09: 8.61e-10mbar
YR10: 1.32e-10mbar

02:56

Temps OK

write speed ~1.2Mb/s

System check OK

White rabbit diff - 89

Leakage Current ~3.472uA

Pressures stable

Beam intensity ~3.0e7

cryostat setpoint 129.2K (unchanged)

AVG Pressures:
YR09: 8.48e-10mbar

YR10: 1.28e-10mbar

YR07: 1.71e-10mbar

YR08: 2.1e-9mbar

Aida 1 1*L plot attached. Some channels appear missing. Width of rutherford peaks ~280-300 channels.

02:04

Temps OK

Data Rate - ~1.1Mb/s

System Check OK

White rabbit diff - 83

Leakage Current - ~3.475uA

YR09 AVG: 7.51E-10mbar

YR10AVG: 1.21E-10mbar

YR07AVG: 1.67E-9mbar

YR08AVG: 1.91E-9mbar

23:53

Temperatures OK

System checks OK - white rabbit fail diff ~ 80

Pressures stable

Cryo temp = 129.2 K setpoint

Data rate ~1.2 MB/s

Leakage current ~ 3.47 uA

00:53

YR10 avg = 1.29E-10 mbar

YR09 avg = 8.7E-10 mbar

YR04 avg = 1.13E-11 mbar

YR07 avg = 1.76E-10 mbar

YR08 avg = 2.18E-9 mbar

Data rate ~ 1.1 Mb/s

Temperatures OK

system checks OK - white rabbit fail diff ~ 80

Pressure stable, cryostat temp setpoint = 129.2k

Leakage current = 3.47 uA

Beam intensity reads ~ 2.6-3E7

Pressure seems as before 19:10.

Merger, Tape server (WS3) checks: DONE, writing ~1 MB/s, refreshing is fine

Leakage current (WS4): 3.47 uA , stable current

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

DAQ (WS2): everything ok

Online monitoring (WS 5): done

Recently the pressure started to raise a bit, we have increased the temperature from 129.1 K to 129.2 K. Current pressure at S1 2.10e-7.

Merger, Tape server (WS3) checks: DONE, writing ~1 MB/s, refreshing is fine

Leakage current (WS4): 3.46 uA , stable current

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

DAQ (WS2): everything ok

Online monitoring (WS 5): done

At 19:10 Frank called us that vacuum in sections 08 and 10 got worse by about 1.5 times. There is a possible danger that vacuum valves can get closed if rest gas pressure is above the set treshhold.

Nikos warmed the cryostat by 0.5 degrees from 129.0 K to 129.5 K and the pressure became better than before. We cooled the system in steps of 0.1 degress down to 129.1 K and again observed the pressure rise.

We think we can stay with the present conditions. However, the pressure shall be monitored not to hit the treshhold.

Still trying to recover previous pressures, more details in the next entry.

Merger, Tape server (WS3) checks: DONE, writing ~1030 kB/s, refreshing is fine

Leakage current (WS4): 3.46 uA , stable current

DAQ (WS2): temperature checked,

DAQ (WS2): everything ok

Online monitoring (WS 5): done;

At 19:10 the vacuum has increased suddenly everywhere in the ring, roughly a factor 1.5.

Michael is modifying the settings of the electron cooler --> changed beam from bunched to coasting

Merger, Tape server (WS3) checks: DONE, writing ~1036 kB/s, refreshing is fine

Leakage current (WS4): 3.46 uA , stable current

DAQ (WS2): temperature checked,

     - clock status:

Clock status test result: Passed 5, Failed 0

Understand status as follows
Status bit 3 : firmware PLL that creates clocks from external clock not locked
Status bit 2 : always logic '1'
Status bit 1 : LMK3200(2) PLL and clock distribution chip not locked to external clock
Status bit 0 : LMK3200(1) PLL and clock distribution chip not locked to external clock
If all these bits are not set then the operation of the firmware is unreliable

     -  adc calibration:

Calibration test result: Passed 5, Failed 0

If any modules fail calibration , check the clock status and open the FADC Align and Control browser page to rerun calibration for that module

   - white rabbit check:

     Base         Current     Difference
aida01 fault      0xc228 :      0xc274 :      76  
aida02 fault      0x5e98 :      0x5ee0 :      72  
aida03 fault      0x92d3 :      0x931f :      76  
aida04 fault      0x7a92 :      0x7ade :      76  
aida05 fault      0xedc0 :      0xedcc :      12  
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

DAQ (WS2): everything ok

Online monitoring (WS 5): done;

Merger, Tape server (WS3) checks: DONE, writing ~1 1273kB/s, refreshing is fine

Leakage current (WS4): 3.46 uA , stable current

DAQ (WS2): temperature checked,

     - clock status:

Clock status test result: Passed 5, Failed 0

Understand status as follows
Status bit 3 : firmware PLL that creates clocks from external clock not locked
Status bit 2 : always logic '1'
Status bit 1 : LMK3200(2) PLL and clock distribution chip not locked to external clock
Status bit 0 : LMK3200(1) PLL and clock distribution chip not locked to external clock
If all these bits are not set then the operation of the firmware is unreliable

     -  adc calibration:

Calibration test result: Passed 5, Failed 0

If any modules fail calibration , check the clock status and open the FADC Align and Control browser page to rerun calibration for that module

   - white rabbit check:

         Base         Current     Difference
aida01 fault      0xc228 :      0xc272 :      74  
aida02 fault      0x5e98 :      0x5edf :      71  
aida03 fault      0x92d3 :      0x931d :      74  
aida04 fault      0x7a92 :      0x7adc :      74  
aida05 fault      0xedc0 :      0xedcc :      12  
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

DAQ (WS2): everything ok

Online monitoring (WS 5): done