run coordinator’s report thomas schörner-sadenius (uhh) on behalf of the run coordinators’...

RUN COORDINATOR’S REPORT

Thomas Schörner-Sadenius (UHH)

On behalf of the run coordinators’ team:

E. Gallo (left the team), J. Loizides, M. Turcato, R. Walsh

ZEUS Collaboration MeetingDESY, 27 February – 3 March 2006

DESY, 28.2.2006 TSS: Run Coordinator’s Report 2

OUTLINE

¶ HERA and ZEUS performance since last collaboration meeting (8-12 October 2005, Amsterdam)

¶ Status of components (not trigger)

¶ Conclusions and outlook


HERA PERFORMANCEGood data taking before shutdown

Runningperiods

- Running from 12 October to 14 November 2005- After shutdown first COSMIC on 14/2, first PHYSICS on 17/2.

Lumi2005

- Good luminosity up to 5*1031cm-2s-1, specific up to 2.2*1030cm-2s-1mA-2.- Satisfactory background situation.

Polari-sation ‘05


HERA STARTUP In february 2006

Currents - Initially problems with electron injection and with lumi creation at ZEUS.- But within one week up to 25 mA of electrons and 65 mA of protons.

Lumi - luminosity up to , peak up to 2.6*1031cm-2s-1.- specific lumi up to about 2.5*1030cm-2s-1mA-2.

Electrons currently limited to 25mA.Also low electron injection efficiency.


HERA STARTUP In february 2006

Bunches Currently running on120 bunches. Soon: 150 bunches with 80/35mA.

Background

15-20. February: electron BG Last 7 days: electrons coming down

Dominated by synchrotron radiation BG (bad electron vacuum upstream)?


HERA STARTUP Background continued

15-20. February: electron BG

Good fills lately.


ZEUS EFFICIENCY since startup: suffering from background; HERA hickups


OUTLINE

¶ HERA and ZEUS performance since last collaboration meeting (8-12 October 2005, Amsterdam)

¶ Status of components (not trigger)

¶ Conclusions and outlook

STT/Magnet-Repair

Based on Carstens temperature model, the STT/Magnet repair was done installed cooling pipes on frustrum surface

temperature modell w/o cooling

temperature modell with cooling

Copper pipes, 15 mm x 1 mm, flattened

72 meters of pipes installed

Three independent curcuits

S. Goers


Position of temperature sensors

Temperature monitoring and stability

( ) 6

( ) 0.5

T top bottom C

T front rear C

was 23 before

(from simulations)

C

temperature stable in time

Not

e th

e sc

ale!

constant temperature distribution around/along detector

Safety scheme:Depending on- temperature reading of sensors (above certain threshold)

- no cooling water flow (sensors still to be installed)

the STT Slow control will switch off the Low Voltage

(Temperatures also available via Netmex)


STT-Readout

Recabling of STT-Readout done:we now use four transputer links instead of one substantial increase of bandwidth

Furthermore (honestly: as before)

Cut on crate level can be applied to reduce/cut STT data volume waiting for data to learn about trigger rates and event sizes adjust cuts to optimize data-taking efficiency

Online-machines (zulu9 & zulu19) upgrades to Scientific Linux 3 recompiling of code ongoing

FTD: no changesDetector: fineReadout: fineData: fine

Dear Deputy:please don‘t forget to check FTD & STT histograms in hip

zulu19 recently broken (TSS)


CTD STATUS J. Loizides, J. Ferrando

1) HV status - stable, exchanged old UPS for new. We now have 2 spares (The system uses 5 UPSs)

2) GAS status - New Spare flow controller for Argon will be installed soon

3) Readout status - Considerable work on recovering dead channels, now we have approx 30, before we had 130. This is the best since 1996. We have 10 "new" spare TRAMs for the Transputer network taking our total to 12. These are critical components which normally fail at the rate of 1-2 per year, barring power failures.

4) Endplate temperature - New web page showing CTD temperature monitoring, updated hourly:

http://www-zeus.desy.de/~ctd/temps/

5) CTD SLT- the CTD SLT is off, no data is sent, replaced by GTT

6) All CTD DQM for 2006 e– data is ok.


The MVD is fine!

T. Haas


MVD Shutdown ActivitiesAim: Make MVD handling more stable and user-friendly!

Upgrade to ADC eproms (A. Polini, K. Tokushuku, A. Polini)

Bug identified in November → MVD holding busy when data rate is highFirst version tested in DecemberFinal version goes in this week

DAQ System upgrade (A. Polini, C. Youngman)25 nodes/2 TerabytesSUSE 8. 5 → Scientific LINUX 3 (SL3)

Consolidate DAQ network (C. Youngman)Gain more portsDESY compliant solution

LV (R. Carlin, T. Haas, C. Youngman, A. Zampieri)

Goal: More reliable operation of HELIXRaise LV from ±2.0 V to ±2.1 V

Cooling System (C. Youngman)SPICAN reset can now be done automatically when needed.

HV (C. Youngman + Praktikant)Scanned 50 – 90 V Depletion voltages.Results look promising but studies are still ongoing.

DQM (E. Lobodzinska, G. Watt)Complete port to SL3Major Cleanup


MVD Status

IV runs vs time

Leak

age

Cur

rent

(nA

)

Bad

Cha

nnel

s

Sig

nal (

AD

C)

Sig

nal (

AD

C)

Testpulse runs

Physics runs

Leakage current constant; radiation damage under control Number of bad channels constant(?)

Effect of raising LV (2V2.1V.


CAL Overall Status

Overall status is fine, but situation is not stable and problems will appear from time to time. Overall status is fine, but situation is not stable and problems will appear from time to time.

During the shutdown a lot of effort was put into the CAL in order to get it into the best possible shape before During the shutdown a lot of effort was put into the CAL in order to get it into the best possible shape before restartingrestarting

BCAL: improvement of HV, clock and serial lines, and PMT basesBCAL: improvement of HV, clock and serial lines, and PMT basesFCAL: after moving onto extensions recabled everything and got it into the same stable situation as before the FCAL: after moving onto extensions recabled everything and got it into the same stable situation as before the

shutdownshutdown

After shutdown CAL had no holes and only 200 bad channelsAfter shutdown CAL had no holes and only 200 bad channelsBut before the start of the data taking some old problems (mainly BCAL) which were thought to be fixed But before the start of the data taking some old problems (mainly BCAL) which were thought to be fixed

showed up againshowed up againWill work on it during access dayWill work on it during access day

CAL was not moved the last couple of month before the shutdownCAL was not moved the last couple of month before the shutdownProblems due to bad cables decreased, no significant deterioration of cells close to beam pipe Problems due to bad cables decreased, no significant deterioration of cells close to beam pipe

observed observed Will not move CAL until further notice, CAL group is monitoring HV development closelyWill not move CAL until further notice, CAL group is monitoring HV development closely

Ing

rid

-Mari

a G

reg

or,

DES

Y, C

AL

sum

mary

Ing

rid

-Mari

a G

reg

or,

DES

Y, C

AL

sum

mary


HES Shutdown Work• Pull F11 & F10 repair in Mark J hall One week de-cabeling with ≥ 3 people CAL extension rails Pull F9 & F15 & F16 repair in Mark J hall

• Re-install F11, F15, F16, F9 and finally F10 directly check modules afterwards

• CAL from extension rails Re-cabling one week with ≥ 3 people

First complete switch on

• Testing & repair & testing & repair & testing & repair & testing & repair & testing & repair ... • Exchange of lots of analog cards, ski control systems, digital cards and one power supply, the link switch for RHES and installation of further noise improvements

Switch off and wait for lumi data taking

Switched on, running fine now since one week

22nd of Dec well ahead of schedule !

3rd of Jan

17th of Jan

19th of Feb

Kerstin Borras, ZEUS CM Feb’06


Status of BMUON detector(Slide from R. Brugnera)

In general, BMUON is running smoothly, but A problem with a trigger card has produced

high trigger rates in the rear region, now almost solved. Problem with the readout of a inner barrel

chamber, we hope to fix during this access. Due to its oldness, the component has

necessity of continuous repair works in order to be in a safe state.

Software: mbtake.fpp available in runlib, updated up to

the end of 2005 BMUON efficiency simulation package up

to 2005 available both for ORANGE-users and EAZE-users Modifications to the BREMAT and

MBRECON packages almost completed and ready to become public


FMUON STATUS (provided by A. Polini)

A. Polini


Repairs and improvements during shutdown should have positive impact on data quality. The most important among them were: Replacement of bad photomultipliers in the counters which are close to the beam pipe Producing and implementing some electronics board to the bad discriminators channels Improving some HV cable extender connections Repair of low voltage outputs of HV divider Repair of spare HV divider Tuning of HV for several photomultipliers.

Currently the Veto Wall is in good shape, we have 4 not working channel located in outer part of the Veto Wall area.

The most urgent problems are: Extremely high rates produce by bad background condition. Not working SLT Level of the Veto Wall readout chain during physics runs (Under investigation). This is not affecting GFLT level so veto is sending correctly.

Detector side Tunnel side

VETO ACTIVITIES AND STATUSIn good overall shape.

J. Malka


BAC ACTIVITIES AND STATUS P. Plucinski


BAC ACTIVITIES AND STATUS ctd’

energy (GeV)

efficiency

+ trigger (TLTBAC)

+ offline (MUBAC)


MAGNETS STATUS (provided by D. Notz)

6. Floor, SPS for (de)grounding

The following signals are now visible in the control room:

¶ grounded magnets (“Geerdet”)

¶ Ungrounded magnets (“Enterdet”)

¶ PS off (All PS off)

¶ Release not available (“Freigabe fehlt”)

Control Room


MVD Radiation Monitor

Diode 14 is off as before (dead); All other diodes are working fine!Diodes 10 & 15 could be recovered after shutdown.

New readout board: Was sucessfully installed by E. Borsato and F. Dalcorso.A. Longhin is working on the software. Diodes 1,2,3,4 are used for testing it. (They have been masked.)

Next: Temperature corrections will be redone.

HIP histograms go sometimes crazy due to interference of the tworeadout programs for radfets and new radmon board.A. Polini is looking into it.

RadFETs

C. Horn


LUMI STATUS

o Online - PCAL activities during the shutdown + replaced some cables and temperature sensors + PCAL covered by additional lead blocks (from proton beam) - No hardware problems since last collaboration meeting (except Trigger Board reset button) - not necessary to mention :) - LUMI DQM available in HIP server - Testing the readout electronics linearity of the PCAL showed discrepancies wrt to the last such test needs to be further investigated.

o Offline - No changes in data quality - Egas bremstrahlung spectrum needed for cross check (electron only running)

M. Gil


MORE … … not covering all components

¶ Trigger, DAQ, more on CAL see talks in this session.

¶ 6m Tagger – 6m tagger now included in MOZART; noise etc. still have to be added. – Studies for use in FL analyses are under way.

¶ C5. – Currently fighting problems with VME controller .

¶ ….

More in tomorrow’s “detector status, offline and analysis” session.


OUTLOOKGreat data to come!

¶ HERA startup promising: – number of problems acceptable; – backgrounds mostly under control; – so far good currents and lumi.

¶ ZEUS is more or less stable; more and more components seem to suffer from ageing.

¶ Looking forward to one more year of high lumi, high statistics, high quality data!


QuickTime™ and aTIFF (LZW) decompressor

are needed to see this picture.

CFLTp Status

S. Chekanov, J. Loizides, S. Miglioranzi, D. Nicholass, A. Pellegrino

Input cards• 3 Spares: 1 at Jade Hall, 2 at ZEUS

Comm Cards

• 1 new spare at Jade Hall in System, used for tests.• 1 old card at ZEUS.

QuickTime™ and aTIFF (LZW) decompressor

are needed to see this picture.

Comments

• Spare status is unchanged from previous meeting.

run coordinator’s report thomas schörner-sadenius (uhh) on behalf of the run coordinators’...

Documents

hera startup background

ma of electrons

zeus performance

ma of protons

amsterdam status of

installed cooling pipes

electron bglast

electron bggood