<!-- Title: 15:32:36  Wed Oct 17 2001 -->
<!-- Crewchief: silicon people -->
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<pre>access continurs 
 
 
baggies off - starting ISL investigation</pre>


<!-- Date: Thu Oct 18 11:45:28 2001 -->
<pre>Mary and I measured light level on a channel 
while adjusting Vdoim.  We touched nothing 
except the Vdoim knob and the scope. 
Here's what we found (Raw measurements) 
 
2V DOIM		 LL 
------- 	---- 
1.91		162 uW 
1.70		222 uW 
1.91		152 uW 
2.1		103 uW 
1.91		162 uW 
1.81		194 uW</pre>
<!-- Author: ADF, MRB -->
<!-- Comment: Thu Oct 18 11;46;06 comment by...ADF, MRB -->
<pre>We measured T_doim=25</pre>

<!-- Comment: Thu Oct 18 11;49;43 comment by...ADF -->
<pre>If you correct for the factor of 1.6, the measurements
correspond to a slope of 50 uW/100 mV at this temperature.

The famous formula LL(V,T)=LL(V0,T)*2*(V-2.5) gives
a slope of: 2 * 250 uW / V = 500 uW / V = 50 uW / 100 mV.
Maybe we actually know what we are doing?</pre>


<!-- Date: Thu Oct 18 14:02:37 2001 -->
I was doing software work (and attending the svxii meeting) 
and on returning I notice someone has usurped  
the SRC in b0svx02.  Lucky I was paying attention, 
otherwise I'd be screwing them up royally (or they 
me)...
<!-- Author: SCN -->


<!-- Date: Thu Oct 18 16:08:44 2001 -->
<pre>new but historical failures: 
   sb0w5l4 - bit 5 high - ? 
   sb1w5l1 - cgr - bit 5 low 
   sb2w5l0 - bit 5 low - cgr 
   sb2w6l2 - bit 6 low  - vdoim 
   sb3w6l2 - bit 2 high - RX swap 
   sb4w4l3 - bit 7 high - RX swap 
brand new spontaneous failures 
   sb0w4l0 - bit 4 low - cgr, followed by spacer 
   sb3w4l0 - bit 2 low - vdoim 
   sb3w8l4 - bit 1 high - spacer 
   sb4w0l4 - read the bits  
   sb4w6l2 - bit 0 high - spacer 
  
    
   </pre>
<!-- Author: Andy, Jean -->
<!-- Comment: Sun Oct 21 09;14;51 comment by...jean -->
<pre>I added the first 5 of these to individual 
portcard elogs today.</pre>
<!-- Date: Thu Oct 18 16:37:43 2001 -->
<pre>SVX cooling re-established.  However, the fact that the ISL 
is basically at room temperature will hold off ALL 5V enables.</pre>
<!-- Author: Andy H. -->


<!-- Date: Fri Oct 19 08:20:30 2001 -->
<pre> 
  ISL and SVX cooling update... 
 
    &gt; Andy re-established SVX flow yesterday.  If we 
      raise the max trip temp to 25 (which we've done during 
      other accesses), then SVX will be able to enable, even 
      w/ ISL cooling off 
 
    &gt; ISL cooling presently (Friday, 19-Oct, 0800) OFF. 
      we'll re-establish cooling to ISL WEST sometime today. 
      we'll leave ISL EAST OFF over the weekend.   
 
    &gt; Laser tentatively will come over Tuesday afternoon. we'll 
      start on the EAST side.  at the end of next week, we'll 
      move it to the WEST side.  Likely we'll disable only that 
      1/2 of the ISL that we're working on.  We'll work 12 hr/day 
      and are aiming for 0800-2000, but the safety committee may 
      wish us to work evenings instead.  we'll know more next 
      week.   we likely won't work over the weekend. 
 
    &gt; we will at least laser the straight sections.  the  
      side-firing needs to improve in efficiency and we may not 
      feel confident enough in the side firing to want to try it 
      next week.  depends on progress these next couple days. 
 
    &gt; today, jim and i will continue inspecting the east side. 
      we'll quit sometime later this afternoon, between      
      1600-1700. 
 
</pre>
<!-- Author: - Doug -->


<!-- Date: Fri Oct 19 11:47:31 2001 -->
<pre>Below are the possible non-FTM problems I have 
cataloged from the elogs. 
 
****************************************** 
Wedges with Bias set to 2V (de-sensitize them?) 
****************************************** 
 
SB0W7 L4 Probably OK--change CAENvolts 
SB1W4 L3 Probably OK--change CAENvolts 
SB2W0 L2 Touching-only administrative action needed 
SB3W0 L2 Touching-" 
 
 
SB0W3 L3 
SB0W8 L3 
SB3W1 L4 
SB3W7 L2 Pinhole? 
 
****************************************** 
Bias Problems 
****************************************** 
 
SB2W7L4: bias O/C 
SB4W9: L2, L4 bias O/C 
SB4W6L0	Pretest OK; Vbias O/C 8/18/01 
SB3W5L0  Pretest: Bias overcurrent, intermittent 
SB2W6L0  Pretest: Bias undercurrent 
SB3W4: Looks unbiased 8/8/01 (layer?) 
 
 
****************************************** 
DVDD O/C & O/V 
****************************************** 
 
SB0W5L4 DVDD overvoltage 
SB0W10L0 Pre-integration OK; DVDD OC 8/21 
SB0W11L0 DVDD OC trip 9/28/01 
SB2W7L3 DVDD O/V 
SB2W8L4 Pretest OK; FTM work? (8/8/01 entry that it's fixed) DVDD OV 9/6/01 
SB3W2L2 Pretest OK; DVDD Overvoltage 7/25 
SB4W3L0 Pretest DVDD overcurrent 
SB5W3L2	Pretest: DVDD Overcurrent 
 
****************************************** 
DVDD too low? 
****************************************** 
 
SB0W2L0 Dropped R/O 
SB0W3L4 Preintegration 7/24: Z dead  
SB0W6L4 Dropped R/O (Z side) 
SB1W4L3 Dropped R/O 5% 
SB1W8L4 Dropped R/O Last Chip 0.01% 
SB2W2L2 Pretest Dropped R/O (bad OBDV?) 
SB2W8L2	Pretest OK; Dropped R/O 7/12/01 
SB3W3L4 Pretest: Bad init, no R/O 
SB5W1L3	FTM (worked 5/20/01)?  L3 dropped R/O 7/11 
SB5W1L4 Pretest: 00 Seq, only reads 7 chips 
SB5W3L4 Cap ID Chip 4 
 
****************************************** 
Other 
****************************************** 
SB0W1L4 Pretest OK; AVDD overcurrent 8/9/01 
SB0W6L0	PRD1 open or stuck high 4/13/01	("Cell 63") 
SB2W7L3 AVDD O/C 
 
SB1W3L2, SB1W3L3, SB1W3L4  Correlated non-understood failure 
SB4W4L0, SB4W4L2, SB4W4L3  Probably Superfib (?) 
 
2 "Dead" Wedges 
 
SB2W4 Broken remote sense ? 
SB5W5 L4 AVDD overvoltage (remote sense understood); "Gino's" PC failure 
 
4 Wedges with no PS 
 
SB5W6 
SB5W8 
SB5W9  
SB5WA 
</pre>
<!-- Author: ADF -->


<!-- Date: Fri Oct 19 13:42:45 2001 -->
Have established flow to West ISL.  East port card cooling circuit is being held off due to high West Pcot readings.   
<!-- Author: Jim Ellermeier -->
<!-- Comment: Fri Oct 19 17;37;50 comment by...Doug -->
<pre>

  &gt;&gt;&gt; ISL West has all flows established.
  &gt;&gt;&gt; ISL East will remain OFF (including the CPC line)
      until sometime next week.

</pre>
<!-- Date: Fri Oct 19 15:47:26 2001 -->
<p>This is a late entry.  Yesterday IB1W3 would not turn on, so I jumpered the power supply so that the cable enable-loop was no longer needed.  This seemed to fix the problem, which implies that the enable loop for one of the cables or bias adapters is broken.  The solution is to just leave this jumper in (it is operationally safe to do so).
<!-- Author: Napora -->


<!-- Date: Fri Oct 19 16:22:58 2001 -->
<pre>Jean wanted me to mention that SVX will be runnable over the 
weekend.  I will raise the ISL trip temperatures to 24 deg C to 
give a little more breathing room before the ISL uber-trip kicks in.</pre>
<!-- Author: Andy H. -->
<!-- Comment: Fri Oct 19 18;08;09 comment by...Andy H. -->
<pre>I also raised the SVX bulkhead trip limits to 22 deg C and the
SVX PC trip limits to 24 deg C.  This should be enough to power
a good chunk of SVX, but probably not all.</pre>


<!-- Date: Sun Oct 21 08:54:28 2001 -->
<pre>Fcc is down today aming amny things difficult. 
For example, the mail server,  main WWW server, etc. 
 
Plans to do SVX HST have been canceled.</pre>
<!-- Author: Jean, andy -->
<!-- Comment: Mon Oct 22 09;19;03 comment by...N. Webster -->
<pre>apparently spelling is difficult as well...(heh heh)</pre>
<!-- Date: Sun Oct 21 12:53:18 2001 -->
<pre>Testing SVX with Bill. I enabled the west SVX. Tried turning it  
all on, got a PC temperature trip. Now running with just SB2W3. 
 
In order to do this, I took SB2W8 out of HWDB (what happened to  
this PS? Is it being repaired?), took out SB2W2, and turned all 
FIB's in b0fib02 offline except fib #7 (#1 was already offline 
since SB0W2-3 were not being read out).</pre>
<!-- Author: Lester -->
<!-- Comment: Sun Oct 21 17;17;04 comment by...Lester -->
<pre>Reverting to previous hwdb settings except for SB2W8.

From the studies it looks like the SVX problem may stem from 
an SRC screwup. We need to look further, but today we're hampered
by lack of network.
</pre>

<!-- Comment: Sun Oct 21 17;18;35 comment by...Lester -->
<pre>SVT problem not SVX problem; in which the SVT apparently never
receives an event. This is because the SRC doesn't ever send
any VRB or FIB commands, rather it just sends L1Done immediately.
</pre>


<!-- Date: Mon Oct 22 08:41:46 2001 -->
<pre>Just wanted to mention a couple of problems that  
I did not find in the recent lists (I hope thay are solved): 
&lt;/pre&gt;&lt;font color=red&gt;SB1W3L0 looks unbiased off-line&lt;br&gt; 
SB0W11L1 looks unbiased off-line.&lt;/br&gt;&lt;/font&gt;&lt;pre&gt; 
Reported current reading is zero. </pre>
<!-- Author: Saverio -->


<!-- Date: Mon Oct 22 08:45:33 2001 -->
<pre>I just tried to run something in fib06 and get the following  
message when logged in: 
 
Test Fifo Enabled?  No Way! 
 
Didn't find any entry in the elog which could explain this...</pre>
<!-- Author: Petra -->
<!-- Comment: Mon Oct 22 08;51;24 comment by...petra -->
<pre>I rebooted it and now it looks ok</pre>

<!-- Comment: Mon Oct 22 09;17;17 comment by...SCN -->
This message is harmless-it is what happens when the
FFO is not synched with the SRC.  You don't need to reboot
to make it go away, you can just ignore it or 
init the East SRC...



<!-- Date: Mon Oct 22 10:25:02 2001 -->
I stole the DAQ laptop so that hopefully we can get rid of this hanging business.
<!-- Author: SCN -->
<!-- Comment: Mon Oct 22 12;11;09 comment by...SCN -->
Laptop back in SiliSquad Room, testing for an ethernet hang.
Please do not disturb for at least > 1 hour


<!-- Comment: Mon Oct 22 16;44;15 comment by...SCN -->
Laptop now available.  I think the preferred method will be to
hop to b0dap30, then hop to a linux machine b0dapXX with XX<30
(like b0dap06, b0dap08, b0dap21, b0dap20...).  I imagine
this will stop the hanging.  Better yet, there is
nothing wrong with running at least the DAQ right off the laptop...


<!-- Date: Mon Oct 22 12:12:21 2001 -->
In order to do some DAQ work I took all Fibs in SVX_FIB_00  
offline except for the one in slot 8 (e000,e010).
<!-- Author: SCN -->


<!-- Date: Mon Oct 22 12:47:28 2001 -->
Cal Inject / Gain Scan original <a href= 
'/cgi/elog/det-system-elog.pl?nb=silicon&action=view&page=20&frame=2&anchor=12:31:50'> 
reference </a>
<!-- Author: SCN -->


<!-- Date: Mon Oct 22 13:23:30 2001 -->
<pre>Polyurethane foam peanuts were found on the 
silicon cables by the TLD crew.  There was  
concern these could cause a mechanical 
interference when moving the silicon. 
 
Aseet has positively ID'd the foam as being 
that used to insulate the COT RTD's. 
 
I have verified that the foam does not fill 
up the space between COT and ISL, and will 
not cause an interference. 
 
Everything is OK! 
</pre>
<!-- Author: ADF -->


<!-- Date: Mon Oct 22 14:53:13 2001 -->
<pre>I went through all the non-OFTM problems, powering them and  
reading the out; on my way to compile a final list with action  
plans for the pit. 
 
I also took some histoscope files of the SVX B2 wedges before  
Gino's grounding fixes got connected: ~svxii/daq/grounding/ 
These should be compared to the performance after the grounding  
straps are in place.</pre>
<!-- Author: Petra -->
<!-- Comment: Mon Oct 22 15;11;33 comment by...petra -->
<pre>the directory is actually: ~svxii/daq/svx/grounding/</pre>



<!-- Date: Mon Oct 22 18:35:41 2001 -->
I fixed up the PLC code to allow L00E and L00W to be enabled 
independently if cooling permits.  However, the Quadlog "gently" reminded us that with ISL E cooling down, you can't enable any part of ISL, nor any part of L00.  Rich Schmitt is supposed to arrive tomorrow to rewrite the Quadlog and give it full granularity, so it was decided to bag any ISL/L00 work for tonight (which would require bypassing the Quadlog).
<!-- Author: Andy H. -->


<!-- Date: Mon Oct 22 18:53:35 2001 -->
<pre>SVX interlocks and 5V enables OFF</pre>
<!-- Author: Petra -->


<!-- Date: Mon Oct 22 19:01:17 2001 -->
<table><tr><td><a href=/elog/notebooks/silicon/Mon_Oct_22_2001_190109.ps align=top><img src=/cgi/elog/det-system-elog.pl?nb=silicon&action=view&page=-203  align='top'></td><td>Here is the outcome of today's work on Grounding</a></td></tr></table>
<!-- Author: gino -->
<!-- Comment: Mon Oct 22 19;06;17 comment by...Gino & Jason -->
<pre>We did a lot of work today trying to optimize the GROUNDING of the central barrel. 
We added a GND strap connected to  AGND of Layer 4 ladders 
for all the 24 wedges (12 East and 12 WEST) and we connected all 
of them to the brade that goes across the detector.
As you can see from the plot we made a small impact. We still have some ideas to try but I would not raise too many hopes.
We strongly recommend somebody to check out what we did from the point of view of strain relief etc...
 </pre>


<!-- Date: Mon Oct 22 21:37:04 2001 -->
<h3>Rudimentary Charge Injection</h3> 
Seems to work.  To operate, one must use a  
Calibration mode and set<ul> 
<li> <I>TS Code</I> = 91  (Special Code which TS uses to tell SRC to Cal Inject 
<li>  <I>Extra 1</I> = DAC setting 
<li> <I> Cal Interval </I>= (50,51,52) 
</ul> 
Jury is still out on the optimal setting of the last one (couldn't tell by event display).  I took some runs in Standby, 
with the following settings: 
<table> 
<tr> <th> Run # </th> <th> DPS </th> <th> Extra 1 </th> <th> Cal Interval</th> </tr> 
<tr> <td> 129383 </td> <td> ON </td> <td> 0 </td> <td> 50 </td> </tr> 
<tr> <td> 129386 </td> <td> ON </td> <td> 5 </td><td> 50 </td> </tr> 
<tr> <td> 129387 </td> <td> ON </td> <td> 10 </td> <td> 50 </td> </tr> 
<tr> <td> 129389 </td> <td> OFF </td> <td> 10</td> <td> 50 </td> </tr> 
<tr> <td> 129390 </td> <td> OFF</td> <td> 5 </td> <td> 50 </td> </tr> 
<tr> <td> 129393 </td> <td> OFF </td> <td> 0 </td> <td> 50 </td> </tr> 
<tr> <td> 129394 </td> <td> OFF </td> <td> 10 </td> <td> 50 </td> </tr> 
<tr> <td> 129396 </td> <td> OFF </td> <td> 10 </td> <td> 51 </td> </tr> 
<tr> <td> 129398 </td> <td> OFF </td> <td> 10 </td> <td> 49 </td> </tr> 
<tr> <td> 129401 </td> <td> OFF </td> <td> 10 </td> <td> 52 </td> </tr> 
<tr> <td> 129403 </td> <td> OFF </td> <td> 10 </td> <td> 53 </td> </tr> 
</table> 
 
Masks were set to inject into every 16th channel.  Someone might 
look to see if it really worked via some offline interrogation. 
 
  
<!-- Author: SCN -->


<!-- Date: Tue Oct 23 11:34:17 2001 -->
I have rediscovered that when we run warm it is impossible to change the temp trips. This is because we(me and Steve) wrequired also that the supply temp be below 15 C to be allowed to download new temp limits. After talking with Andy F. I think this condition is too drastic and I will change it soon. Now I have set the SVX temp to 25 C ( these are max allowed values).  
  
<!-- Author: Mircea Coca -->


<!-- Date: Tue Oct 23 14:44:40 2001 -->
Our all-day test is completed, successfully.  
<p> 
The L2 reject logic in the SRC was not properly handling the case in which four L1A are pending. Lester modified the state machine logic and loaded a 
new PROM.  
<p> 
We ran one wedge (B2W3) at 19 kHz for 9M L1A, accepting 1/1000 events, and saw no problems. We were rate-limited by SVX, because the SRC 
currently doesn't send aborts to the FIB.  
<p> 
The next two things on the list are (a) run more wedges, i.e. verify that this fix allows us to run a large fraction of the detector; and (b) test the FIB abort 
logic, if Steve Nahn and Ken Treptow have made some progress on that at FCC.  
<p>  
<!-- Author: Bill A, Lester M -->


<!-- Date: Wed Oct 24 09:01:27 2001 -->
<pre>This is a late entry to report on yesterday's work. 
 
Andy, Vladimir, and I did the high-speed test on the East side,  
kicking out layers until we ran with no errors. 
 
The notes on this operation and the log files which show the  
detailed modes of failure are in the paper logbook.  Analysis to 
follow. 
</pre>
<!-- Author: Jason -->


<!-- Date: Wed Oct 24 10:20:55 2001 -->
<pre> 
&gt;&gt;&gt; The laser has arrived on the EAST side 
&gt;&gt;&gt; Access to the east bore will be RESTRICTED 
&gt;&gt;&gt; DO NOT ENTER FOR ANY REASON while signs are posted 
 
  We will be working from 0800-2000 each day.  We plan on 
  moving to the WEST side next week.  When we leave at the 
  end of our work each day, we'll make it so that others 
  can work up there from 2000-0800. 
 
  If we're up there and there's an urgent need to reach us, 
  shout up to us or contact Dee Hahn to borrow some safety 
  goggles so that you can climb up there. 
 
  THIS IS SERIOUS.  You risk eye damage if you're up there w/o 
  goggles.  </pre>
<!-- Author: Doug -->


<!-- Date: Wed Oct 24 10:44:29 2001 -->
The problem with Caen Sy527 Plug  HV Crate 11  on the East Plug is fixed. After the power outage of yesterday the crate 11 did not came back . It looks like it was not powered on. Instead it was on but in a frozen status. A manual reset, issued from 3rd floor reset box took care of restoring crate functionality.
<!-- Author: Stefano Zucchelli -->
<!-- Comment: Wed Oct 24 10;50;24 comment by...petra -->
<pre>ignore this entry</pre>


<!-- Date: Wed Oct 24 16:36:34 2001 -->
<pre>Shift summary of non-FTM repairs: 
 
SB4W3: fixed by replugging 5V enable cable. 
 
SB3W2L2: all cables (power and sensing) are OK. 
	Resistance between DVDD2 and DGND2 is 760 ohms for this  
	layer, but is 850 ohms for all other layers. 
 
SB5W3L2: all cables (power and sensing) are OK. 
	Resistance between DVDD2 and DGND2 is 15-20 ohms for this  
	layer, but is 850 ohms for all other layers.</pre>
<!-- Author: Gino, Jason, Petra -->


<!-- Date: Wed Oct 24 20:01:35 2001 -->
We installed some power supplies today: 
<br> 
<b>L00</b> 
<pre> 
        Rack   Crate Slot S/N 
        ====== ===== ==== === 
LB1W0   NE Bot  Top    9  #15  (repaired 500V PS) 
LB1W1   NE Bot  Bot    1  #09 
LB1W2   SE Top  Bot    9  #14 
LB1W3   SE Top  Bot    7  #10 
LB1W4   NE Bot  Top    7  #13 
LB1W5   NE Bot  Top    1  #11 
</pre> 
<br> 
<b>SVX</b> 
<pre> 
        Rack   Crate Slot S/N 
        ====== ===== ==== === 
SB2W8   SW Bot  Bot    7  #29  (adjusted -100mV on 2V DOIM) 
SB5W6   SE Bot  Bot    6  #04 
SB5W8   SE Bot  Top    6  #49 
SB5W9   SE Bot  Top    5  #31 
SB5WA   NE Top  Top    8  #27 
</pre> 
None of them have been load-box tested yet. 
<p>
<!-- Author: Napora and Herndon -->
<!-- Comment: Wed Oct 24 20;23;23 comment by...Napora and Herndon -->
<p>The CAEN.map file was updated appropriately.  The three L00 crates were left off to avoid GUI conflicts (we are still running the "ersatz-L00" [SVX flavor] type GUI.)
<!-- Date: Wed Oct 24 20:17:35 2001 -->
<p>We also jumpered SB3W7 Layer 0 so that it's reference for the bias is on the opposite side.  This will hopefully be a successful "work around" for the pinhole detected on this layer. 
As a safety measure we adjusted the bias voltage for this layer from 94V to 2V and x'ed it out in CAENvolts.dat until someone with a bit more silicon expertise (Sav, Gino, Worm?) can decide on a safe voltage for this biasing scheme.
<!-- Author: Napora and Herndon -->



<!-- Date: Thu Oct 25 08:30:58 2001 -->
<pre>September caen data moved to the archive area. 
Caen-spy restarted automatically at 8:21 after 
this morning's shut-down. </pre>
<!-- Author: saverio -->


<!-- Date: Thu Oct 25 12:12:30 2001 -->
<table border=0><td><tr><td bgcolor=#e0e030><pre>Attention: by accident I loaded the CAENcurrent.dat file into the  
PS GUI on Wednesday. Therefore all the maximum bias currents are set to the values iin that file, which was generated from the actual  
detector situation, meaning, the detector was on (or SB) and draw  
some current. These currents ended up in the file, so they are very low limits. I changed all SVX wedges back to 50/50/500/50/500  
in th file and loaded it, so these limits are fine. But the ISL  
limits are still screwed (though low) since I didn't know the default settings. 
 
Sorry!</pre></td></tr></td></table>
<!-- Author: Petra -->


<!-- Date: Thu Oct 25 12:27:22 2001 -->
<pre> 
PSMon and temperature-broadcaster will be non-functional for 
the afternoon while a new version of SmartSockets for Windows is 
installed and tested. 
</pre>
<!-- Author: Andy H. -->
<!-- Comment: Thu Oct 25 14;52;09 comment by...Andy H. -->
<pre>New SmartSockets version failed -- reverted back to old
version and will consult with relevant experts.  PSMon and
temperature-broadcaster back in business.</pre>


<!-- Date: Thu Oct 25 18:58:15 2001 -->
Hi.  We tweaked a lot of DOIMS today: 
 
<pre> 
Wedge   VDOIM2  Location               initial->final 
---------------------------------------------------------------- 
*SB0W11 -150   NW Top Top 0		1.92 -> 1.77 V 
---------------------------------------------------------------- 
*SB1W2  -200   NW Top Bot 4		1.92 -> 1.72 
---------------------------------------------------------------- 
*SB2W0  -300   NW Top Top 9          	1.94 -> 1.64 
---------------------------------------------------------------- 
*SB2W1  -300   NW Top Top 6		1.94 -> 1.64 
---------------------------------------------------------------- 
*SB2W2  -100   NW Top Bot 2		1.94 -> 1.84 
---------------------------------------------------------------- 
*SB2W11 -250   NW Top Top 2		1.95 -> 1.69 
---------------------------------------------------------------- 
 
---------------------------------------------------------------- 
 SB1W5  +250   SW Bot Top 3		special, see below 
---------------------------------------------------------------- 
 SB2W6  -300   SW Bot Top 1		1.94 -> 1.64 
---------------------------------------------------------------- 
 SB2W7  -100   SW Bot Bot 4 prev(-200)	1.72 -> 1.62 
---------------------------------------------------------------- 
 SB2W8  -200   SW Bot Bot 7 prev(-100)	1.85 -> 1.65 
---------------------------------------------------------------- 
 
---------------------------------------------------------------- 
 SB3W4  -150   SE Bot Top 1 prev(-200)	1.74 -> 1.59 
</pre> 
We couldn't gain access to the NE corner, so those will have to wait until tomorrow.  Also, SB1W5 had a high value on its 5V DOIM so we decided to tweak it as follows: 
<pre> 
	 5V DOIM:	5.59 -> 5.38 V 
	 2V DOIM:	2.11 -> 2.15 V 
</pre> 
This still gives a net change of 250 mV in their difference.
<!-- Author: Napora and Herndon -->
<!-- Comment: Fri Oct 26 17;08;46 comment by...herndon -->
<pre>A few comments.

I rechecked the list of changes and I'm pretty sure all the
above changes are as requested.

Andy and I noted that the central barrel wedges need more
adjustment to increase the voltage drop accross the DOIM.
This is probably due to the longer/thin cables.  I just
realized that this may mean that the 5VDOIM voltage is a bit
low on the port card.</pre>
<!-- Comment: Sun Oct 28 10;29;43 comment by...herndon -->
<pre>A quick back of the envelope calculation indicates that
the voltage drop is probably 100mV more an the long cables
that go to the central barrel.  50mV each way.</pre>
<!-- Comment: Wed Oct 31 16;51;59 comment by...herndon -->
<pre>This was supposed to go in this entry as well.  SB2W6 bias layer
is broken.  Will replace when power supply is available.</pre>
<!-- Date: Thu Oct 25 19:02:18 2001 -->
Hi again.  We also inserted some more power supplies today. 
<pre> 
Wedge	Location	S/N 
=====   ============    === 
IB4W3	SE Top Top 3	#18 
LB0W3	SW Top Bot 7	#08 
LB0W2	SW Top Bot 9 	#12 
</pre>
<!-- Author: Napora and Herndon -->


<!-- Date: Thu Oct 25 21:50:22 2001 -->
<pre>Three main comments from my side for today: 
=========================================== 
 
1) The PS GUI doesn't know anymore (it did yesterday) about the function of the 'PC on' button, Andrew is informed. 
 
2) SB4W4 which was previously believed to be a bad FIB, now works perfectly fine (apart from L3) due to Gino's magical touch. 
 
3) SB3W4 2Vdoim was lowered today by Matt and Rob, but was found by us to be already too low before that, since nothing initializes anymore! We actually wanted it to be increased...</pre>
<!-- Author: Petra -->
<!-- Comment: Thu Oct 25 22;40;06 comment by...Gino -->
<pre>SB3W4
I went downstairs and I pushed IN the fib comand cable into the FIB.
Now the wedge initializes and reads out.
Verified that each ladder is now biased but for L2 the bias
 voltage was set to 25 while it should be 40 V. This is a mistake
on the wedge/barrel/ladders summary test web page.
Very likely the other end of this ladder should 
have the voltage changed from 40 to 25 volts.
This is one of the ladders with the x end where the z is supposed
 to be so it could have caused some confusion.
Still Layer 4 has no current associated with the bias line. I
 will add a plot now that shows that it is biased.
There is a bad channel on layer 4 that sometimes gives OO errors

but it was already known from SiDet.
This wedge is perfect.</pre>


<!-- Date: Thu Oct 25 22:43:04 2001 -->
<table><tr><td><a href=/elog/notebooks/silicon/Thu_Oct_25_2001_224235.ps align=top><img src=/cgi/elog/det-system-elog.pl?nb=silicon&action=view&page=-205  align='top'></td><td>SB3W4L4 Biased or not? Take a look here</a></td></tr></table>
<!-- Author: gino -->


<!-- Date: Fri Oct 26 02:12:28 2001 -->
<pre>I upgraded the PS GUI in the Control Room to the version with 
mixed power supplies for L00. To specify which power supply (SVX  
or L00 ) is available for L00 wedge a new line of 1 and 0's is  
added to CAEN.map . It contains twelve digits, corresponding to  
L00 wedges, starting from LB0W0 and ending with LB1W5. '1'  
corresponds to SVX flavor and '0' to L00 flavor of power supply. 
It is important, that this sequence of numbers is correct!</pre>
<!-- Author: Andrew -->


<!-- Date: Fri Oct 26 14:18:40 2001 -->
<pre>GUI spy restarted. L00 GUI.</pre>
<!-- Author: Saverio -->


<!-- Date: Fri Oct 26 15:18:44 2001 -->
<pre>Checked all cables in West Bore for slack before 
the move.  Found the following potential problems. 
 
SB1W7       Power Cables may be too tight. 
	    	Currently dressed to allow access 
		to iworms; will be easier to	 
		assess when dressed back in place 
 
SB2W8	    DOIM cables too tight 
 
IB1W3	    Power cables too tight; hard to reach due to iworms 
 
LB0W3	    Cannot see at all; hard to reach due to iworms 
 
	Will re-check these after inchworm checks are 
finished.</pre>
<!-- Author: ADF -->
<!-- Comment: Fri Oct 26 16;09;22 comment by...ADF -->
<pre>After releasing these back to cover the inchworms, 
they are all OK.</pre>



<!-- Date: Fri Oct 26 18:00:19 2001 -->
<b>Power Supply Report of the Day</b> 
<ul> 
<li>Finished (?) the DOIM adjustments in the NE corner: 
<pre> 
Wedge	  Location	 Adjustment 
=====	============	============ 
SB3W1	NE Top Top 2	1.93 -> 1.68V 
SB3W10	NE Top Top 4	1.94 -> 1.69 
SB3W11	NE Top Top 7	1.79 -> 1.64 
SB4W10	NE Top Top 9	2.17 -> 1.77 
SB5W3	NE Top Bot 1 	1.93 -> 1.68 
</pre> 
<li>Installed a L00 supply: 
<pre> 
LB0W0	NW Bot Top 5 	Serial #03 
</pre> 
<li>Removed the two "svx flavor" L00 supplies (LB0W4, LB0W5) from the backplane. 
<li>Installed an ISL supply: 
<pre> 
IB1W1  	NW Bot Bot 3 	Serial #22 
</pre> 
This is the final PS installation for the ISL!  Yippee!!!  Our first fully powered detector system! 
</ul>
<!-- Author: Napora -->
<!-- Comment: Sat Oct 27 11;59;55 comment by...matt -->
<pre>Now if we could just turn it on!  :)</pre>
<!-- Date: Fri Oct 26 19:17:30 2001 -->
<pre>Summary of work on Rx's and Fib's 
 
Swapped Rx's 
 
Wedge		FTM S/N		Rz S/N out	Rx S/N in 
---------------------------------------------------------- 
SB0W2-0		148		 228		 682 
SB1W3-2		164		 588		 326 
SB1W5-1		135		1085		 993 
SB0W8-1		158		 266		1046 
SB2W5-0		121		 992		 604 
SB5WB-0		DUH		 362		 827 
 
Swapped Fibs 
 
SB2W6-7		151 out 112 in 
SB4W0-1		152 out	129 in 
</pre>
<!-- Author: Lester & Souchi -->


<!-- Date: Fri Oct 26 19:17:58 2001 -->
<p><b>gui-spy restarted.</b><br> 
How to restart the GUI-spy:<ul><li> 
log in b0dap30 as svxii<li> 
cd hv/smartso/<li> 
lx_new_caen_spy.exe &</ul> 
In case you use the old GUI, please start  
<b>lx_caen_spy.exe &</b> ,instead.  
<!-- Author: Saverio -->
<!-- Comment: Fri Oct 26 19;24;16 comment by...sav -->
<pre>   log in b0dap30 as svxii
   cd hv/smartso/
   setup smartsockets
   lx_new_caen_spy.exe &</pre>




<!-- Date: Sun Oct 28 23:57:28 2001 -->
<pre>Finished inchworm project.  Details in the morning. 
Purging is beginning now, it will probably be 
cold around 4 AM; it should be +6C.  We cannot 
do anything between 6 AM and 8 AM (iFix goes down). 
 
	The first thing to do at 8 will be  
High-Speed Tests; then light level measurements of  
problem bits; then repairs.</pre>
<!-- Author: ADF -->
<!-- Comment: Mon Oct 29 14;07;18 comment by...ADF for the crew: Roser, Moccia, Olson, Riveline, Flaugher, Slaughter, Spalding, Goldstein -->
<pre>	Setting up dial gauges, rasniks, and inchworm
potentionmeters, we moved the detector.  Invchworms
were de-immobilized by relieving load using a
lever and 8 kg weights.  Lever arm was ~1:4 resulting
in ~1 kg load reduction per inchworm per weight.  Saw
only small movements during loading (~50 microns west,
none in east).

	We made a variety of motions on the west in
small steps to verify our monitoring systems. The
inchworms, once relieved of load and ready to move,
did not spark under high voltage. We
found good (10%) agreement in the magnitude (and even
direction) of motions, between the rasniks, the
inchworms, and the dial gauges.  This gave us 
good confidence in what we were doing.

	First we moved the west flange towards the 
south, in steps of about 500 um, for a total motion of 2.4 
mm. During this time we noticed on our dial gauges
a motion on the East flange of 300 um south.  We
did not have a horizontal dial guage, though subsequently
we learned that there was likely also a motion during this
time of 300 um upwards.

	The SW inchworm showed a load near to the limit
(45 kg), so we slowly raised the west end upwards, by
100 um at a time at first and then 200 um.  We made a total
motion of 1050 um upwards.  At this point we had corrected
both tilts but not necessarily the offsets.

	We decided to try to get the offset; and
move the West a little more than the east to correct for
the unintended extra 300 um upwards motion on the east
from motion on the west easrlier.  We raised
the west end 500 um more, in steps of ~100 um.  The SW
inchworm was just barely within the load limit.  We then
raised the east 500 um, in steps of 100, 200, and 200 um.
The SW inchworm load was relieved a little bit and we tried
the west again.  We raised the west 500 um, and then the
east 500 um.  

	Finally, we tried to correct the 300 um induced
motion in  the east by moving the east end 300 um to the
north.  After moving ~100 um, the SW load exceeded our
limit and we stopped.  Due to miscompensation of the
north and south inchworms, we moved not only 100 um
north, but also 150 microns down.

	So the list of motions, and the score:

	1. West end towards south +2.4 mm
	   (Unintended East 300 umn south, 300 um up)
	2. West end up +1.1 mm
	3. West end up 600 um
	4. East end up 400 um
	5. West end up 600 um
	6. East end up 400 um
	7. East end north 100 um, down 150 um

	Final W (+2.4 South, +2.3 mm Up)
	      E (+200 um South, 1 mm up)

	Tilt w.r.t beam W-E / 3 m: (100 urad, 70 urad)

	Offset of center (600 um north, 2.7 mm up)


	During all this time we saw essentially no motion on
the internal rasniks (SVX BH -&gt; 2" Web, 2" Web  -&gt; 4" web).

	Rob, Stefano, and Craig deserve beers.</pre>
<!-- Date: Sun Oct 28 23:58:57 2001 -->
<table border=0><td><tr><td bgcolor=#e0e030><pre>&lt;h3&gt; iFix will be down 6 AM - 8 AM.  We cannot power the 
detector, nor can anyone go in the hall. &lt;/h3&gt;</pre></td></tr></td></table>
<!-- Author: ADF -->
<!-- Comment: Sun Oct 28 23;59;43 comment by...ADF -->
<pre>duh-html.</pre>