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2009/03/16

LO power levels

In-tunnel levels, measured at point of entry to electronics:

Magnet LO power (dBm) Attenuation (dB)
QD10X - 3.62 0
QF11X - 2.01 0
QD12X - 1.80 0
QD16X - 0.62 0
QF17X +1.13 0
Ref1X +1.02 0
QD18X - 1.69 0
QF19X +1.38 0
QD20X - 0.59 0
QF21X +1.91 0
QM16FF +4.10 0
QM15FF +3.12 0
QM14FF +3.11 0
QM13FF +2.24 0
QM12FF +0.52 0
QM11FF +1.94 0
QD10BFF +2.24 0
Ref3FF - 0.79 (+2.51)* 3
QF9BFF - 0.66 (+2.23)* 3
SF6FF - 0.41 (+2.76)* 3
QF9AFF +0.00 (+3.11)* 3
QD8FF +0.159 0
QF7FF +1.00 0
QD6FF +1.76 0
QF5BFF - 0.01 0
SF5FF - 0.21 0
QF5AFF - 0.86 0
Ref2FF - 0.58 0
QD4BFF +0.289 0
SD4FF - 0.43 (+5.38)* 6
QD4AFF - 0.36 (+5.52)* 6
QF3FF +1.53 (+7.74)* 6
REF1FF +1.8 (+7.61)* 6
QD2BFF +2.06 (+8.15)* 6
QD2AFF - 0.14 (+7.81)* 8

* LO power level before passing through attenuator

LO power level as output by box of Mellor:

19.23dBm with 20 dB attenuation on output making -0.77dBm

714MHz stability measurements

A screenshot of scope data taken over ~6 hour period can be found here

The yellow line shows the 714MHz signal as taken from the power supply room and the pink line shows the 357MHz signal as taken from the extraction kicker station.

Clock stability investigation

The clock instability problem mentioned in the previous logbook entry has been narrowed down to the locking box. Specifically the cards labeled 1-5 in this diagram. More investigation is needed to pinpoint the exact cause of this instability.

BPM readback channels

Magnet Temperature LO Cal Cal
QD10X CARD1:SIG60 CARD1:SIG61 CARD1:SIG62 CARD1:SIG63
QF11X CARD1:SIG56 CARD1:SIG57 CARD1:SIG58 CARD1:SIG59
QD12X CARD1:SIG52 CARD1:SIG53 CARD1:SIG54 CARD1:SIG55
QD16X CARD1:SIG48 CARD1:SIG49 CARD1:SIG50 CARD1:SIG51
QF17X CARD1:SIG44 CARD1:SIG45 CARD1:SIG46 CARD1:SIG47
QD18X CARD1:SIG40 CARD1:SIG41 CARD1:SIG42 CARD1:SIG43
QF19X CARD1:SIG36 CARD1:SIG37 CARD1:SIG38 CARD1:SIG39
QD20X CARD1:SIG32 CARD1:SIG33 CARD1:SIG34 CARD1:SIG35
QF21X CARD1:SIG28 CARD1:SIG29 CARD1:SIG30 CARD1:SIG31
QM16FF CARD1:SIG24 CARD1:SIG25 CARD1:SIG26 CARD1:SIG27
QM15FF CARD1:SIG20 CARD1:SIG21 CARD1:SIG22 CARD1:SIG23
QM14FF CARD1:SIG16 CARD1:SIG17 CARD1:SIG18 CARD1:SIG19
QM13FF CARD1:SIG12 CARD1:SIG13 CARD1:SIG14 CARD1:SIG15
QM12FF CARD1:SIG8 CARD1:SIG9 CARD1:SIG10 CARD1:SIG11
QM11FF CARD1:SIG4 CARD1:SIG5 CARD1:SIG6 CARD1:SIG7
QD10BFF CARD1:SIG0 CARD1:SIG1 CARD1:SIG2 CARD1:SIG3
QD10AFF CARD0:SIG60 CARD0:SIG61 CARD0:SIG62 CARD0:SIG63
QF9BFF CARD0:SIG56 CARD0:SIG57 CARD0:SIG58 CARD0:SIG59
SF6FF CARD0:SIG52 CARD0:SIG53 CARD0:SIG54 CARD0:SIG55
QF9AFF CARD0:SIG48 CARD0:SIG49 CARD0:SIG50 CARD0:SIG51
QD8FF CARD0:SIG44 CARD0:SIG45 CARD0:SIG46 CARD0:SIG47
QF7FF CARD0:SIG40 CARD0:SIG41 CARD0:SIG42 CARD0:SIG43
QD6FF CARD0:SIG36 CARD0:SIG37 CARD0:SIG38 CARD0:SIG39
QF5BFF CARD0:SIG32 CARD0:SIG33 CARD0:SIG34 CARD0:SIG35
SF5FF CARD0:SIG28 CARD0:SIG29 CARD0:SIG30 CARD0:SIG31
QF5AFF CARD0:SIG24 CARD0:SIG25 CARD0:SIG26 CARD0:SIG27
QD4BFF CARD0:SIG20 CARD0:SIG21 CARD0:SIG22 CARD0:SIG23
SD4FF CARD0:SIG16 CARD0:SIG17 CARD0:SIG18 CARD0:SIG19
QD4AFF CARD0:SIG12 CARD0:SIG13 CARD0:SIG14 CARD0:SIG15
QF3FF CARD0:SIG8 CARD0:SIG9 CARD0:SIG10 CARD0:SIG11
QD2BFF CARD0:SIG4 CARD0:SIG5 CARD0:SIG6 CARD0:SIG7
QD2AFF CARD0:SIG0 CARD0:SIG1 CARD0:SIG2 CARD0:SIG3

Topic attachments
I Attachment History Action Size Date Who Comment
Bitmapbmp 714VS357.bmp r1 manage 2946.1 K 16 Mar 2009 - 09:07 ChristinaSwinson Scope screenshot of 714MHz PS vs 357MHz KS
JPEGjpg IMG_0819.JPG r1 manage 3552.4 K 30 Mar 2009 - 07:35 ChristinaSwinson photo of inside of locking box
JPEGjpg IMG_0825.JPG r1 manage 3310.4 K 30 Mar 2009 - 07:38 ChristinaSwinson photo of inside of locking box (2)
JPEGjpg IMG_0840.jpg r1 manage 2634.8 K 30 Mar 2009 - 07:20 ChristinaSwinson Photo of locking box card
PDFpdf LockBox.pdf r1 manage 5.6 K 30 Mar 2009 - 07:08 ChristinaSwinson Block diagram of locking box
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Topic revision: r5 - 01 May 2009 - ChristinaSwinson

 
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