Azriel Goldschmidt
LBNL MS 50-208
1 Cyclotron Rd, Berkeley CA 94720

(510) 486-7518
AGoldschmidt@lbl.gov

Talks given

IceCube related Work

IceCube DOMMB V2 Tests

Ongoing discussion minutes on the "Hit" definition for IceCube (in progress)

Status report for String-18 analysis (in progess)

Buffered data from 3 DOMs at pole, (a few seconds worth of hits including the new ADC info) and a script to parse them

Two-DOM-per-twisted-pair study: Study of effects of an unterminated twisted cable (high impedance)

DOM Waves for Feature Extraction Studies Mar 2002

String 18 Commissioning Talk at Berkeley Collaboration Meeting March 2002

String-18 workshop (session 11 of Berkeley AMANDA/ICECUBE collaboration meeting march 2002)

TAUP IceCube talk

Flasher Studies: Lab Measurements

Flasher Studies: Measurements at Pole

List of problem channels from Feb 2002: Analog/DOM/DOMCOM/other
The list above have information about bad DOMs, bad ATWDs, bad bases, and also surface hardware related problems.
Info is also included for the analog problems.
 

Cable Length Data from New 2002 DOMCOM Hardware

After the successfull installation at pole by K.H. Sulanke of the new version
of the surface electronics, I took some data of cable lengths for all the 37 DOMs
that are connected. The tar file containing the 37 gzipped files.
 

These data is mainly useful for the experts to verify calibration codes
and study the systematics of the cable delay measurement and the
time synchronization as well as clock stabilities, etc.

DOM WAVES:

New Data: UTC time stamps for the DOM quartet corresponding to Days 149-163.
Data format is day and sec within the day (Jan 1 2001 is 1)

Here is a tar file with waveforms and UTC time-stamps from DOM-Quartet .

The files dom10xx.utc_stamps.dat contain the list of the UTC time stamps for
the individual waveforms from file waveforms_dom10xx_utc.dat.gz (in 1-to-1 correspondence).
Where xx is 11,38,23, the DOM ID, which corresponds to the following AMANDA
channels:
 
DOM ID Ch. TB ID depth (m) z(m)
1011 623 1 1849.62 -119.62
1038 624 2 1861.57 -131.57
1023 637 3 2016.92 -286.92
1034 638 4 2028.87 -298.87

The hits were taken with a hardware Local Coincidence requirement
with a ~1 usec window. The time elapsed is of about 4 hours,
starting at  (UTC)  ~23:43 of day 149.
The actual livetime in these file is actually about a factor of
10 lower because of the small duty cycle.

The UTC time stamps have been checked against the AMANDA
time stamps for a subset of downgoing muons. At present you can
expect ~ 10-20 usec of overall offset between AMANDA and DOM
times.

The waveform files have 4x128 = 512 lines per PMT hit.
The first 128 (channel 0 of ATWD) are the high gain PMT pulse (x10).
The following 128 (channel 1 0f ATWD) are the low gain pulse(x2).
The following 256 lines should not be of interest to the "general public".

A few lines to display wavesforms in paw would look something like this:
************
* showing only the high gain channel
* create a vector to put the first 100 waves
* 128 samples
* 4 channels
v/create waves(128,4,100) r
v/read waves waveforms_dom10xx_utc.dat
do  i=1,100
v/dr waves(:,1,[i])
wait 0
enddo
************

DOM Waves for Feature Extraction Studies Mar 2002
This tar file contains files of  waveforms from three DOMs in the ice taken in Mar 2002.
DOM 1025, 1023, 1034 (the deepest three in the string) for three different triggering conditions:
1. pedestal 2. spes without local coincidence and 3. spes with local coincidence.
Here's a sample from each (for DOM1025):
1. pedestal

2. spe trigger without Local coincidence requirement

3. spe trigger with Local coincidence requirement (here's an  extreme example)

The type of trigger can be deduced from the time stamp in the filename, the runs were taken in the
time sequence 1,2,3.

Notice that the files are in the DomLogger format (ascii but you will need parsing of the data).
Notice also that for each DOM there are two ATWDs and the data for both is present in the data files:
A line like this at the beginning of the waveform signals a waveforms from ATWD0
DOM 1033 ATWD0: 1036 bytes, FIDUCIAL 0xaa000000 TRIG 0xcc7919b0,0x1000
and correspondingly ATWD1 for the other.

Also, remember that for each ATWD vaveform there are 4 channels (ch0...ch3), which are the
high-gain, low-gain, spare-for-now, shaped-clock.
Please send email if something is unclear about the data.

Please let me know of comments/questions at
AGoldschmidt@lbl.gov