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Entry  Tuesday, March 19, 2013, 12:34, Anders Mjos, SiC#28, , ITE, TM4, , , Done, Installation of SiC#28 LP-RFQ grab.n5HwXJ.png20130321_heating_and_signal.PNG
    Reply  Thursday, March 21, 2013, 15:05, Sebastian Raeder, SiC#28, , ITE, TM4, , , Done, 2nd heating of SiC#28 LP-RFQ - short resolved 20130322_heating.png20130322_massscan_transmission.png20130322_massscan_suppression1.png20130322_suppression2.pnglegs.JPG
Message ID: 283     Entry time: Tuesday, March 19, 2013, 12:34     Reply to this: 286
Author: Anders Mjos 
Target/No.#: SiC#28 
Source:  
Station: ITE 
Module: TM4 
Target Oven W.O#:  
Heat Shield W.O#:  
Status: Done 
Subject: Installation of SiC#28 LP-RFQ 

Tuesday, March 19, 2013, 12:32 : Turbos off (vaccum at 2E-7 Torr)

Tuesday, March 19, 2013, 13:35: Venting

Target SiC#28 LP-RFQ inserted

New bolts used. Old bolts removed.

All bolts torqued to 120 in lbs


By Sebastian (SR) & Henning

modification of 9 Pin connector needed to match wiring in TM4 (see separate e-log entry)

Tuesday, March 19, 2013, 18:32 : started roughing - SR

Tuesday, March 19, 2013, 18:52: started turbos - SR

Tuesday, March 19, 2013, 18:57: TSGIP1 on - SR

Tuesday, March 19, 2013, 19:00: turbos at speed - SR

Tuesday, March 19, 2013, 19:02: vacuum at 1.68E-5T


By Anders

Wednesday, March 20, 2013, 08:18: Opened cooling water. Vacuum stable at 6.8E-7 Torr


By Sebastian (SR) & Henning

Wednesday, March 20, 2013, 11:39: 9PIN connector in HV cage connected

        4,5,6,9 on GND 1,2 to RF, 7,8,RFoffest,Source for now also on GND

        RF: 800kHz, 20Vampl, 0.128mA

        HV cage locked up for heating

Wednesday, March 20, 2013, 16:42: heating is taken care of by ISAC operations, now at 300A / 3V TGHT  and 250A / 1.47V TBHT reading on the panel is really close

        Friedhelm restarted some of the CANBUS ports, since not all optics were working properly

Thursday, March 21, 2013, 10:53 start cooling down

       Vacuum not perfect was around 2E-6T, over nigth not full current

       Suppression tested yesterday: full beam (SRC +3V, others GND) was 40nA, while no signal on FB0B with SRC +3V, IGOffset&Exit +25V

       !!!!! but short on #7 --> 2nd Repeller, was OK when tested, after some minutes on 25V short was there, reading now (Thursday, March 21, 2013, 10:58 ) <1OHM, will be checked while heating down

       Magnet had wrong polarity - so no mass scans yesterday evening, Friedhelm looked into this this morning

      Mass scan only for good transmission mode (SRC +3V) this morning - see attached scan (seen Na, Al, K, Ca, Cr, Rb, Sr, Cs and Ba)

Thursday, March 21, 2013, 12:26: stopped turbos

     #7 still short

 


By Anders

Thursday, March 21, 2013, 13:25: Venting

Attachment 1: grab.n5HwXJ.png  37 kB  Uploaded Thursday, March 21, 2013, 11:59  | Hide | Hide all
grab.n5HwXJ.png
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