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CSCTF: News

CSCTF working meeting, 24 January 2012

● CSCTF DDU status and test request● Firmware and PTLUTs changes● New data format test, chain 1 22/11/11, see Matt’s presentation

By Anna Kropivnitskaya

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CSCTF DDU status and test request

CSCs only have 5 DDUs in the world with the "TF type" modifications.  - DDU numbers 1-4 and now also 7 (this is at OSU with an extender card, will be sent to Cern):

- DDU001 – is at UF without cutout of S-Link- DDU002 – is at 904 in peripheral crate  with cutout of S-Link- DDU004 – is at 904 at cosmic test stand without cutout of S-Link- DDU003 – is running at Point 5 as a consequence

✓ So we have one real spare DDU002. CSCTF DDU expert (Janos Gilmore) says that it is enough.

✓ Firmware status for CSCTF DDU: - at least now possible upload only at 904! - good to have such possibility at Point 5 too. - Jason would like to test new DDU firmware and DDU002 (stress test at Point 5) for this he needs swap DDU boards DDU003 and DDU002… - If CSCTF group has no objection then all CSCTF expert should be at Point 5 that Jason train us how to change S-Link in DDU

Request S-Link for DDU002 from DAQ group

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New data format test

We start tested new firmware chain 1 22/11/11:

Take 1st local run -> it seems good, need more test

For details see Matt’s presentation

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Firmware and PTLUTs changes

✓ Code now in C++ version only thanks to Bobby and Alex

✓ Vasile about new CSCTF emulator: - submit it to 52X which is the development release: dead line is not defined yet - If 50X/51X will go on Tier-0 and online, he will ask the backporting from 52X

✓ Fast Preliminary study on new PTLUT2012 shows good results:

- use Commissioning data with HLT_MuOpen with good vertex reconstruction and no scrapping

“+” improvements in resolution for all Quality tracks “+” significant drop in rate, more then 30% in CSC region “-” some extra tracks are reconstructed -> halo muons with mode = 15 -> needs to understand “-” some plateau efficiency suppression in at pT ~ 10 GeV Still needs more study but look very promising

For details see next slides

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New PTLUT2012 golden region, Quality = 2& 3

Could be that plateau is a little bit less in new PTLUT2012 -> should be study with high pt muon data sample/ Monte Carlo

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New PTLUT2012 golden region, Quality = 2& 3

Could be that plateau is a little bit less in new PTLUT2012 -> should be study with high pt muon data sample/ Monte Carlo

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New PTLUT2012 overlap DT-CSC, Quality = 3

Strange drop in efficiency in new PTLUT2012 up pT ~ 15 GeV? -> should be understand and fixed -> did we change anything at overlap region?

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New PTLUT2012 high eta |eta|> 2.1, Quality = 3

new PTLUT2012 suppress more low pT muons

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New PTLUT2012 |eta| = 1.2-1.6, Quality 3

Improvement in resolution

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Rate comparison for new PTLUT2012 (dash) with 2011

Significant suppression in rate

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New PTLUT2012 golden region, Quality = 2& 3

Significant suppression in rate

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Some extra tracks are reconstructed: halo muons with mode = 15

Only 2 difference compare official version (compare python file configuration)

2011 new PTLUT2012PtMethod = 28 29FirmwareSP = 20220204 20120110

Extra track are generated in new PTLUT2012/Firmware

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Back up

€

res = pTglobal / pT

CSCTF −1

if (res >1) res =1

CSCTF Resolution study

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CSCTF Quality definitionTight definition Q_CSCTF_tight:Quality definition till May, 10 2011: <- this definition is used here for resolution

  - Overlap DT-CSC region:   mode 11, 12, 14 -> Quality 3 (any 2 or 3 station track with DT stub)   for |eta| <1.2 any other modes -> Quality 1 no Quality 2 in this region

  CSC region |eta| > 1.2:  mode 2, 3, 4 -> Quality 3 (any 3 station track with ME1)  mode 6, 7, 13 -> Quality 2 (any 2 station track with ME1)  mode 1, 5, 8, 9, 10, 15 -> Quality 1 (other tracks)

Loose definition Q_CSCTF_loose:Quality definition after May, 10 2011

   Overlap DT-CSC stay the same without changes

   CSC region |eta|> 1.2 changes:   mode 5 -> Quality 3 (3 station track without ME1)   for |eta|: 1.6-1.8 mode 8, 9, 10 -> Quality 2 (2 station track without ME1)

We are consider the possibility to return to the tight definition in the 2012

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Firmware and PTLUTs changes

1. Firmware changing: make non-linear Δϕ12 and Δϕ23 for 2 and 3 station tracks without DT stubs2. PTLUTs changing: - max Likelihood - non-linear Δϕ12 and Δϕ23 for 2 and 3 station tracks with ME1 (without DT stubs)3. Add Δη info to any 2 station tracks (without DT): - 2 station track with ME1: now we have Δϕ23 (CLCT pattern) – 4 bits -> CLCT – 1 bit: if(CLCT = 8, 9, 10) -> 1 otherwise -> 0 Δη – 3 bits -> eta window could be up to 7 (1 unit = 0.0125) we even could consider possibility to roll back eta window cut to 6 (now 4 -> 0.05) - 2 station track without ME1: now Δϕ12 – 12 bits -> Δϕ12 – 9 bits, Δη – 3 bits ✓ Code now in C++ version only ✓ Need test it and produce firmware which will be tested too -> still a lot of work to do✓ We expect reduction in the rate -> under study

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GMT Triggering at |eta| = 0.9-1.2

GMT triggering at SingleMu after September 2011:

- Q_GMT = 7: any CSC/RPC tracks -> Q_CSCTF_loose = 1, 2, 3

- Q_GMT = 6: unconfirmed CSC candidate (no RPC) if - Q_CSCTF_loose = 3 - Q_CSCTF_loose = 2 and {|η| < 1.2 (no such tracks at CSCTF) or |η| = 1.5-1.8} - Q_CSCTF_loose = 1 and |η| < 1.3 - Q_GMT = 5: any unconfirmed RPC candidate (no CSC)