Difference between revisions of "PITMinutes 08-01-2016"

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(New page: == Attendance == R. Bachimanchi, M. Drury, R. Geng, C. Hovater, A. Hutton, G. Krafft, A. Kimber, C. Mounts, R. Nelson, T. Plawski, T. Powers, C. Reece, T. Reilly, R. Rimmer == Agenda and...)
 
 
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== Attendance ==
 
== Attendance ==
  
R. Bachimanchi, M. Drury, R. Geng, C. Hovater, A. Hutton, G. Krafft, A. Kimber, C. Mounts, R. Nelson, T. Plawski, T. Powers, C. Reece, T. Reilly, R. Rimmer
+
R. Bachimanchi, E. Daly, K. Davis, C. Hovater, A. Hutton, G. Krafft, A. Kimber, C. Mounts, R. Nelson, T. Plawski, T. Powers, T. Reilly, C. Reece, H. Wang
  
 
== Agenda and Notes ==
 
== Agenda and Notes ==
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1. Operations Status and Summary
 
1. Operations Status and Summary
  
Microphonic damping feet on 0L04:
+
Enhanced Radiation monitoring in 1L26 (e-log benesch)
correlation studies torque unused feet and microphonics.
+
systematic measurements started
  
Stabilization equipmment on SL-24\:
 
Kirk Davis and Tom taking before and after data.
 
Modify connections and check mode frequencies.
 
Minimize transfer into cavities.
 
Tuner damper to damp MP installed.
 
  
Tuner damper rings in FEL04 also.
 
  
Controls improvements to improve recovery times. Better diagnsotics
+
[https://casa.jlab.org/LINACPIT/2L24_Strike36_40Hz.wmv Powers Strike Movie of Module Oscillation]
Periodic trips being observed again. Snooping around for sources.
+
  
RF Software improvement? capture trip. reduce interactions tuners and MP they generate.
+
Is there benefit from some kind of 40 Hz
 +
thumper measurment?
  
might be benefity by raising press of SL 3-4 mbar.
 
  
2. C50-12 Warm Girder Study Plan
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2. C50-12 Warm Girder Studies
  
zBoth girders out,
+
Collected 60 samples from inside warm girders.
  
Modules next few days.
+
Secured and will be analyzed in two stages:
 +
gross and fine, regarding size and elements present
  
Sampling plan for girders.
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NL-12 cryomodule lift out tomorrow and will
 +
be delivered to SRF Inst.
  
About 20 different points.
 
  
Samples will be also taken as gate valvues replaced.
+
3. C75 (Gigi/Bob Report Next Week)
  
No visibliy dirty in beam pipe but dust has been observed.
+
Mock-up to be tested this week.
  
valves problems.
+
First look
 +
at HOM Qs and Q0 vs. E
  
warm val failures
+
C75 or C50 next year? Brief discussion. As not
Radiation problems?
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approved by Mont, looks like need to wait till
Added valve update and replacement to allow work,
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13th refurbished module. Need to still complete
Warm regions will be pulled and looked at and processed
+
data gathering for future C75
in SRF institute.
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Studies of warm girders next to the removed 1L12 cryomodule.
+
Cryogenic planning for C50-12 discussed at 2:30.
+
May have to warm up NL10 and NL14 also.
+
Talk through cycling of internal valves from contamination
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point of view.
+
  
Clean interior of both sides.
+
4. Follow up Field emission Workshop (Geng)
  
3. C75 on hold (Gigi Report)
+
Tentative Date September 12.
 +
Whole afternoon Subscribed.
 +
This room.
  
Complete Efforts for 2 prototypes. ARD
+
Preliminay agenda
  
2-3 weeks to complete mockup. 3.5 times 10 7
+
[https://casa.jlab.org/LINACPIT/Six_Month_Follow_25jul16.docx Tentative Agenda]
 
+
several HOM loads located  . Gradient and load and loaded Q
+
 
+
low loss window loacated.
+
 
+
Magnetic shielding and hygeine produced good result at cavity locations in CM.
+
 
+
C75 or C50 next year?
+
 
+
4. Effects of desorbed gas on FE (Geng)
+
 
+
Desorbed gas report coming.
+
 
+
Covering of miniconflat by simple Al foil will not
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be good enough going forward. Paticle can still get around.
+
 
+
Joint goal is to have final written procedure leading to low
+
particulate movements,
+
 
+
NeG pump looking good.
+
  
 
== Action Items ==
 
== Action Items ==

Latest revision as of 09:14, 2 August 2016

Attendance

R. Bachimanchi, E. Daly, K. Davis, C. Hovater, A. Hutton, G. Krafft, A. Kimber, C. Mounts, R. Nelson, T. Plawski, T. Powers, T. Reilly, C. Reece, H. Wang

Agenda and Notes

1. Operations Status and Summary

Enhanced Radiation monitoring in 1L26 (e-log benesch) systematic measurements started


Powers Strike Movie of Module Oscillation

Is there benefit from some kind of 40 Hz thumper measurment?


2. C50-12 Warm Girder Studies

Collected 60 samples from inside warm girders.

Secured and will be analyzed in two stages: gross and fine, regarding size and elements present

NL-12 cryomodule lift out tomorrow and will be delivered to SRF Inst.


3. C75 (Gigi/Bob Report Next Week)

Mock-up to be tested this week.

First look at HOM Qs and Q0 vs. E

C75 or C50 next year? Brief discussion. As not approved by Mont, looks like need to wait till 13th refurbished module. Need to still complete data gathering for future C75

4. Follow up Field emission Workshop (Geng)

Tentative Date September 12. Whole afternoon Subscribed. This room.

Preliminay agenda

Tentative Agenda

Action Items