Schedule & Plans for Commissioning Run K.T.Knpfle K.T.Knpfle - - PowerPoint PPT Presentation

Schedule & Plans for Commissioning Run

K.T.Knöpfle K.T.Knöpfle MPI Kernphysik, Heidelberg ktkno@mpi-hd.mpg.de GERDA Collaboration Meeting at LNGS 1 – 3 March 2010

Outline

• update weekly schedule
• options for technical / commissioning run
• run team

2010 Mar 2 Schedule, plans - K.T.Knöpfle 2

jan february march apr

28 30 1 3 5 8 10 12 15 17 19 22 24 26 1 8 15 22 29 6 12 19 26 3 task / day

2010 month

calendar week 4

5 6 7 8 9 10 11 12 13 14 15 16 17 18 2010 lock ship to LNGS install it in cleanroom isolating flange delivery

?

X

!

b / 1 mar 2 isolating flange delivery SMA feedthru flange del/rdy install ext. gas system @ cleanroom

? ✔ ✔ /

e of 24 feb clean it mount cluster flange/shutters mount clean bench mount 2nd c lock support

✔ ✔ including He leak test ✔ ✔

update mount 2nd c-lock support install int gas system install int vacuum system mini UHV shutters del/inst

X

✔ ✔ / ✔ ✔

install 1/3 source mechanics replace blue support bars tests source mechanics in HdM

✔

X ( ✔)

✔

1 of 2:

source mechanics in HdM He leak test lock lock mechanics Rn emanation monitor

✔ ?

X

? ✔ test running

!! ??

1/2

Rn emanation lock insert dummy detector

?

jan february march apr

27 29 1 3 5 8 10 12 15 17 19 22 24 26 1 8 15 22 29 6 12 19 26 3 task / day

2010 month

calendar week 4

5 6 7 8 9 10 11 12 13 14 15 16 17 18 2010 @ e-cabinet Install racks install cooling & power fix cable length

✔

b / 1 mar 2

X

✔ ✔

fix cable length route cables lock - e-cabinet install/ test electronics install/ test DAQ e of 24 feb

✔

X

slow control complete hardware integration WT drainage update

demand driven PRIORITIES!

WT drainage pneumatic actuators delivery dto installation / test 3 rd flow rate test, w Ø110 diaphragma

X

✔ ✔

?

8m flow rate test w Ø110 diaphragma new flow regulator delivery DN65 flow regulator deliveries test of DN65 regulators

X

!!

?

X

misc control room furnitures/PC test of DN65 regulators pipes/flow meter re-installed/tested

!! 2/2

roots pump electrical inst c-lock PLC installation

X ?

Outline

Open issues:

immediate immediate filling of WT – linked to WT drainage delivery of c-lock arm for 1x 3-diode string delivery of c-lock arm for 1x 3-diode string muon veto commissioning close to immediate close to immediate delivery of 2nd arm of c-lock for 3 x 3-diode string operation

2010 Mar 2 Schedule, plans - K.T.Knöpfle 5

plan / options

Goal of commissioning run: Goal of commissioning run: set up and test c-lock for single string - do muon veto commissioning in parallel install diode(s), test electronics, DAQ, and calibration procedures, get first information about background gain experience for operation of 3x3-diode string with enriched Ge diodes How to proceed in detail – various options:

• bvious steps

mechanical test with weight – ist-soll comparison electrical test with capacitor He leak test cleaning of glove box ( & LAr surface? ) tests with prototype & cap to be optimized R f l k h d h l ? Rn assay of c-lock arm - when and how long? How many Genius TF diodes to be immersed? Any enriched diode?

2010 Mar 2 Schedule, plans - K.T.Knöpfle 6

schedule v0

develop / produce 3x3-diode string c-lock arm muon veto commissioning 8m WT

run week 6 NOW basic electric t t run week 2

drainage test

run week 6 tests LAr surface run week 3 write paper? clean? test w run week 3 continue? non-enriched?

2m WT drainage test?

c-lock delivery 1 install & prototype + cap run week 4 connect clean l b install x Genius TF y enriched glove box basic mechanic run week 1 run week 5 l k d li 2 WT filled

2010 Mar 2 Schedule, plans - K.T.Knöpfle 7

tests insert dummy load run week 6 c-lock delivery 2 install commission! diodes & Rn monitor

paper?

PAPER: realistic goal? - Would be nice support for funding requests…. 1) RESULT ON BACKGROUND INDEX (BI) ABOVE 1900 keV: Assume BI of 0.1 resp 0.01 cts per (kg keV y) in RoI of ~2000 – 2600+ keV, t 6 k 0 1 ( i h d) exposure m x t = 6 kg x 0.1 y (non-enriched) ► expect 36 resp 3.6 counts in RoI (a bit too optimistic, perhaps rather 25 and 2.5)! 2) RESULT FOR 2ν2β BACKGROUND BELOW 1900 keV: If BI ~ 0 01 nice comparison of DBD spectrum of enriched & natural Ge diode! If BI ~ 0.01, nice comparison of DBD spectrum of enriched & natural Ge diode! 2ν2β background will dominates – factor 10 larger in case of Ge-76! (6x10^23 x 0.1 / 10^21 = 60 per mol Ge-76 and per 0.1 year). 3) LIMITS FOR KNOWN LINES i.e. LIMITS on CONTAMINATIONS:

2010 Mar 2 Schedule, plans - K.T.Knöpfle 8

measured spectra

spectra measured at LNGS with Ge diode

unshielded

x

unshielded

Tl-208

nd Index ackgrou

predominantly external γ-rays

shielded

Ba

p y γ y

GERDA phase I goal

2010 Mar 2 Schedule, plans - K.T.Knöpfle 9

3x3 string

test setup with strings of rather different weights ►no strong deflections

2010 Mar 2 Schedule, plans - K.T.Knöpfle 10

3x3 string

first design study isolated rotatable

2010 Mar 2 Schedule, plans - K.T.Knöpfle 11

3x3 string

To Do List provide 2nd DN250 shutter - done replace motor & safety clutch replace cable drum provide feed thrus, isolation flange, cables run 30+ cables in energy chain provide DN150-DN250 interface provide two DN250 tubes, one with bellow to modify length design mounting sequence started design mounting sequence - design & provide mount/support for 3 strings incl. front end - started started GOAL: get it delivered by end of June!

2010 Mar 2 Schedule, plans - K.T.Knöpfle 12

run team

We need to establish a run team* within a few weeks!

* difference shifter – run team:

• shifter: changing

sometimes present

• shifter: changing - sometimes present
• run team: fixed - always present

2010 Mar 2 Schedule, plans - K.T.Knöpfle 13

the end

2010 Mar 2 Schedule, plans - K.T.Knöpfle 14