Contact Stansberry - "; echo " there is a problem w/ your write-up.\n"; return ; } $row = mysql_fetch_array($result); $title = $row["title"]; $princ = $row["principal"]; $deputy= $row["deputy"]; $campn0 = $row["campn0"]; $aorkeys = $row["aorkeys"]; // get real name of principal, deputies $princ = ioc_get_person($princ); $princ = $princ[0]; $deps = explode(",",$deputy); foreach ($deps as $depty) { $depty = trim($depty); $depty = ioc_get_person($depty); $depty = $depty[0]; $depty = explode(",",$depty); $depty = $depty[0]; // last names only $deplist[] = $depty; } $deplist = implode(", ", $deplist); $caid = sprintf("%03d",$caid); $file = "mips-".$caid.$campn.".analysis.php"; // END PHP. ?> <? echo "MIPS-$caid, Campaign $campn IOC/SV Analysis"; ?>

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Task Outcome Summary

Abstract

In this task, diagnostic data is collected during 160um, 70um, and 24um thermal anneals. The anneals executed properly. The temperature plots from these anneals are presented in the report for metatask MIPS-2050. Following the anneals, a Vrst optimization is performed on the Ge arrays. The results are presented below.

Analysis

We converted the diagnostic data from the thermal anneal into temperatures and generated temperature plots. These data are compared to the temperature curves from previous anneals. See the writeup for MIPS-2050 for details.

A Vrst analysis was performed on the Vrst data. In this test, the bias voltages for the 70um and 160um arrays are set to 0 mV, and then the Vrst voltages are adjusted between +5 mV and -5 mV relative to normal. A bright stim is turned on in manual mode during the test. The principle is that the array will produce a strong positive slope when positively biased and a strong negative slope when negatively biased, so the zero bias voltage point can be easily recognized. In practice, we calculate slope images and then look for this transition point.


Results

Temperature Plots from Anneal

The temperature plots can be seen in the writeup for MIPS-2050. The temperature behavior during the anneal was nominal.

Vrst Optimization

The Vrst data are presented below. The filenames are MIPS.2/3.0007737600.00??.0001.01.mipl.fits. I ignored the first frame and the last 72 frames in the 70um Vrst slope calculations. The 160um stim is brighter now than it used to be so I had to ignore 76 frames. 

File Bias 70_1  70_2  70_3  70_4  70_5  70_6  70_7  70_8 160_1 160_2 160_3 160_4
02   Nom  -70  -120  -130  -200  -210  -190  -170  -220   106  -258   -28   -17
03   +5  -230  -210  -290  -270  -330  -250  -310  -230  -918 -1401  -620  -555
04   +4  -150  -190  -210  -250  -260  -230  -240  -210  -915 -1251  -504  -365
05   +3   -90   -90  -130  -200  -210  -180  -190  -170  -576  -912  -351  -231
06   +2   -60   -30   -90  -150  -170  -180  -150  -140  -217  -592  -184  -110
07   +1     0     0   -60  -100  -120  -130  -110  -110   109  -338   -41   -22
08   Nom   40    60   -20   -50   -70   -90  -100   -80   433  -138   107    66
09   -1    70   110    20   -10   -50   -80   -60   -60   749    47   256   169
10   -2   120   150    60    20   -20   -40   -40   -40  1074   231   420   296
11   -3   150   180   100    40     0     0   -10   -20  1461   431   607   452
12   -4   180   190   130    70    30    40    10     0  1987   646   809   623
13   -5   210   220   180    90   100    70    20   -10  2448   878  1023   825
14   Nom  -70  -100  -120  -220  -260  -200  -220  -180   219  -134    86    72

Vrst     +1.0  +1.0  -0.5  -1.25 -3.0  -3.0  -3.5  -4.0  +1.25 -0.75 +0.75 +0.75
DAC Counts +4    +4    -2    -5   -12   -12   -14   -16    +5    -3     3    +3
DAC NOM   90E   8F7   910   8E7   916   90B   920   905   97D   91C   91C   913
New DAC   912   8FB   90E   8E2   90A   8FF   912   8F5   982   919   91F   916

The Vrst values from this campaign are similar to the defaults that were added to the mips-irs patch block following campaign I. No new updates are recommended at this time.

Conclusions

The thermal behavior of the arrays is nominal. The Vrst behavior is very consistent with the previous two campaigns. No changes are recommended at this time.

Output and Deliverable Products

None.

Actions Following Analysis

None.