# Presentation: 173880

## Results from HCAL TB2004

**Results from HCAL TB2004**
**&**
**Implication to TB2006**
**S.Kunori**
**21-June-2005**

## HCAL Testbeam Program

**2002****	****	****HB – Production wedges(2). Production megatiles.**
**	****	****Electonics -  pre-production, e.g. QIE @33MHz**
**2003****	****	****HB – PPP1, PPP2  **
**	****	****HE –**** prototype wedge, ****Production megatiles**
**	****	****HO – Production megatiles****   **
**	****	****HF – production wedges (2) - limited data sets -**
**	****	****Electronics – production system**** (most of them)**
**	****	****Synchronization test with 25nsec beam**
**2004****	****	****HB – PPP1, PPP2**
**	****	****HE – prototype wedge, PP megatile.**
**	****	****HO – production megatiles.**
**	****	****HF – Production wedges (6)**
**	****	****Low energy beam**** / TPG (trigger primitive generation)**
**	****	****Slice test with ME.**
**2005****	****	****slice test / cosmic test / magnet test (early 2006)**
**2006****	****	****HB – PPP1, PPP2**
**	****	****ECAL – a super module or modules**
**	****	****Low energy beam**

## Original QIE vs New QIE

_**Original QIE vs New QIE**_
**      ****Original – quiet   (for HO)**
**      ****New       – faster  (for HB, HE)**

**Time Slew**

**Noise Level**

## QIE Pulse Shape: New vs Old

**88% signal collection**
**In 2 time slices.**

## Wire Source Calibration

**Wire Source Calibration**

**HF**
**5mCi Co****60**

**HE**

**<3%**

**~5%**

## HF Uniformity

**2x2cm****2**** scan**

## Trigger Primitive Generation

**150 GeV pion**
**HE with minimal sin(********)**
**dependency in LUTs**
**(Run #23904- 25ns beam)**

**HTR (HCAL Trigger & Readout)**

## Slice Test:  EE-HE-ME

**Readout from HE and EE were successfully synchronized!**

**Punch Through**

## GEANT4 Validation Data

**Quantities:**
**   ********/e**
**   ****Shape of dN/dE dist.**
**       ****(resolution)**
**   ****Shower profile**
**       ****longitudinal**
**       ****transverse**
**Detectors:**
**   ****HF: **
**      ****Cerenkov based**
**   ****EC+HB**
**      ****Scintillation based**

**HB2 readout was reconfigured for longitudinal shower profile study.**

## VLE Beam Line at H2

**P-ID:    **
**     ****CK2-  electron**
**     ****CK3-  pion / kaon / proton**
**     ****V3, V6, VM – muon**

**VLE tag against punchthrough muon**

**WC**
**  ****single hit to reject**
**  ****interaction in beam line**

## Data Sets

**Electron: 5-150GeV**
**Pion:        5-300 GeV**
**Proton:    5-9 GeV**

**(2GeV and 3GeV data exist, but a lof of junks.)**

## GEANT4 Simulation

## HF (Long)

**HF (Long)**
**    ****Electrons**
**    ****Very detailed simulation with G4**
**    ****reproduces electron signal very well.**

**50GeV e-**

**100GeV e-**

**Resolution: e-**

## HF (Long)

**HF (Long)**
**       ****pi-**

**resolution**

******/e**

**50GeV**

**100GeV**

**LHEP shows good agreement.**

## EC+HB  High Energy Data (pi-)

**300 GeV**

**150 GeV**

**100 GeV**

**30 GeV**

**HB**

**ECAL**

**ECAL**

**HB**

****

**e****-**

## 9 GeV pi+ beam

**e****+**

**mip in ECAL, i.e. no-interaction in ECAL**

**Data**

**MC**
**W****/o noise**

****** ******** ******** ****decays in beam line**

**Interactions in beam line**** **

**Need a lot of clean-up !**

**Interactions in ECAL**

## EC+HB      /e

**LHEP without scintillation saturation effect (Birks’ law) shows a reasonable agreement with data for EC+HB combined system.**
**Need more beam clean up and better understanding of systematic errors before making more definitive conclusion, especially HB alone data, (not shown today) ...**

**Preliminary**

**proton**

**pions**

## Longitudinal Shower Profile

**Very preliminary result**

**Different longitudinal shower profiles by two G4 physics models at high energy.**

## TB2006

**Goal**
**Measure performance of real CMS calorimeter.**
**Obtain better low energy data set.**
**Establish very close work relationship with ECAL group in operation of the detector and data analysis.**
**Needs:**
**Real ECAL modules.**
- HCAL TB02-04 used a 7x7 matrix and PMT readout.
**Improvement for low energy beam data.**
- e//K/P separation - cerenkov counters + (?)
- muon tagging- bigger and closer muon tagging stations.
- Rejection of interactions in the beam line. - less material (?) and tagging station for beam interactions.

## Conclusions

**TB2002-TB2004**
**Very successful program.**
- We started with a system test of HB and then expanded to HE, HO and HF.
- We successfully operated calibration system and extracted calibration constants.
**Constatns were loaded to a prototype HCAL database.**
**Other constants were also measured, e.g. ADC-to-GeV, pulse shape, noise level, signal light attenuation, timing, etc.**
- We obtained good 5-300GeV beam data for validation of GEANT4 physics models – analysis in progress.
- + We operated a prototype remote operation center at Fermilab.
**TB2006 - last testbeam run before LHC starts.**
**Real EB modules with HCAL.**
**Low energy data with improved beam line setup.**
**+ Obtain final calibration constants.**

## Additional Slides

## Summary of TB2004 runs

**    ****May 17-Jun8 , High energy run**** **
**   ****Jun 8-14,  no beam time install HO**
**   ****Jun 14-21 25 ns run time  **
**   ****Jun 25- Jul 7: first  HF run  **
**   ****Jul 7-14  : 1****st**** week of VLE run **
**   ****Jul 14- Aug11 : second  HF run **
**   ****Aug 11- 18:  2****nd**** week of VLE run **
**   ****Aug 18- Sep 22: other experiments  in H2  **
**   ****Sep 22-Oct 4: HCAL-EMU  setup **
**   ****Oct 4-11 25ns ****HCAL-EMU**** run **
**   ****Oct 13-18: 3****rd**** week of VLE run**
**   ****Feb.’05  Wire source calibration run **

**Slice Test**

## ECAL 7x7 matrix

**BEAM**

**Light guides to PMTs**

**View from top**

**7x7 crystals**

## HCAL Triggering Counters and a webcam

**HCAL Triggering Counters and a webcam**

**WC-A**

**WC-B**

**WC-C**

**S1**

**S4**

**S3**

**S2**

## HO

**HO**

**VM**

**HB1**

**HB2**

**Beam**

## Electron identification

**Electron identification**

## P-ID with Cerenkov Counter 3 (CK3)

**P-ID with Cerenkov Counter 3 (CK3)**

- The momentum thresholds
- for the range of dn are:
-   dn       P()  P()   P(p)   P(K)
- *E-6
- 2432     2.0    1.51    13.5
- 1557     2.5    1.89    16.8
- 1082     3.0    2.27    20.2
-   ***795     3.5    2.65    23.5   12.35***
-   609     4.0    3.03    26.9
-   481     4.5    3.41    30.3
-   390     5.0    3.79    33.6

**Freon Cerenkov Counter**

## HE/ME Slice Test at H2

**With 25ns beam in Oct.2004**