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Entry  Fri Aug 30 17:31:56 2019, anchal, DailyProgress, TempCtrl, Vacuum Can Temperature Control Setpoint Step Test 
    Reply  Wed Sep 4 11:04:08 2019, anchal, DailyProgress, TempCtrl, Vacuum Can Temperature Control Setpoint Step Test - Results VacCanStepResponse.pdfVacCanStepResponseFit.pdf
       Reply  Wed Sep 4 11:49:02 2019, rana, DailyProgress, TempCtrl, Vacuum Can Temperature Control Setpoint Step Test - Results 
          Reply  Thu Sep 5 11:15:06 2019, anchal, DailyProgress, TempCtrl, Vacuum Can Temperature Control Setpoint Step Test - Results VacCanStepResponseTempAxis.pdf
Message ID: 2406     Entry time: Fri Aug 30 17:31:56 2019     Reply to this: 2410
Author: anchal 
Type: DailyProgress 
Category: TempCtrl 
Subject: Vacuum Can Temperature Control Setpoint Step Test 

Following Rana's test done in 40m:1986, I have programmed the lab to go through a similar test. Following things will happen:

  • At 3:30 am (roughly 30 minutes after the daily beatnote measurement), the cavity heater PID will be switched off.
  • The heating actuation will remain at what it was.
  • The setpoint of Vacuum Can temperature control will increase by 1^\circ C. 
  • Wait for 8 hrs.
  • The setpoint of Vacuum Can temperature control will decrease by 2^\circ C.
  • Wait for 8 hrs.
  • The setpoint of Vacuum Can temperature control will return to nominal value.
  • Repeat this next day until Sep 3rd is reached.

So this will happen three times. In between, the cavity heater PID control will have 7.5 hrs to stabilize the beatnote frequency and at 3:00 am as usual beatnote measurement will happen.

All channels are being recorded at FB4 in QIL so we can look back the relevant channels after the test is over. Putting a sticky note in QIL for not to interrupt FB4.

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