# Presentation: 673177

## Test Beams: Availability & Plans

**  ****KEK**
**  ****DESY**
**  ****CERN**
**  ****Fermilab**
**  ****SLAC**
**  ****Other**

- Gene Fisk – Fermilab
- LCWS_2002  Jeju Do

## KEK Test Beams @ 12 GeV PS

- Information from:
- yoshiaki.fujii@kek.jp** **

## KEK East Counter Hall

- T1 and 2 Test Beams in the East Counter Hall

## KEK Test Beams

-  KEK 12GeV-PS has two beamlines for beam tests:
- #1  2 (up to 4GeV)   #2 T1 (up to 2GeV)
-   Unseparated beams: p/p ~ 1%(FWHM).
-   Cerenkov counters exist for e/ separation.
- 2 has an additional momentum-analyzing magnet,
-     while T1 does not.
-   Facilities and support are not excellent for foreigners who cannot speak Japanese. Operation itself is easy.
-    Beams are provided in October, November, and December every year until 2003 or 2004. Then they will be shut-off due to JHF construction.
-    JLC-CAL will carry out beam tests in 2002 and 2003.

## DESY Test Beams*

- *Information from: N. Meyners
- http://desyntwww.desy.de/~testbeam/welcome.html

- 21

- 22

- 24

- Teststrahlung 21,22, 24

## DESY Test Beams

## DESY Test Beams 21, 22, 24

- Bremsstrahlung derived from in a carbon fiber in
- DESY II is converted to e+e- pairs in Cu, Al of
- thickness 1 – 10mm.
- e+, e- momentum selection range:  1 – 6 GeV/c.
- Intensity:  max is ~ 1 kHz/cm2 (avg)

## CERN Beam Lines*

- *http://sl.web.cern.ch/SL/eagroup/beams.html
- Information  supplied by: K. Elsener, L. Gatignon, M. Hauschild

## CERN X7 Test Beam

## CERN Beam Lines

- North Area

## CERN Beam Lines

**Beamlines - North Area (cont.)**

- North Area (cont.)

- H2, H4, H6, H8     pe < 250 GeV; high purity electron beams for CAL calib.
-                              ph, p < 350 GeV/c

## CERN Beam Lines - Future

- X5, X7 operational in 2003, 2004;
- No PS/SPS operation in 2005.
- _Under discussion_: No West Area operation beyond 2006.

## CERN Beam Lines - Future (cont.)

- North Area

- _Under consideration 2006 and beyond:_  Keep North Area test beams
- operational, but limit their use to no more than 2 at any time.  Reduce maintenance to
- regular working hours.  Keep COMPASS operational until 2008 at least.
- Keep NA48 beam line dormant; possibly move GIF to it.

## CERN Beam Lines Summary

- 6 Beam Lines at present
-    West Area:   X5(w GIF) & X7  100GeV e, 120 GeV ,h
-    North Area   H2, H4, H6, H8  250 GeV e, 350 GeV ,h
- Future Plans:
-    West Area test beams operate in 2003, 2004.
-    No SPS or PS operation in 2005.
-    _Under consideration 2006 and beyond:_
-      Stop West Area test beams;
-      Keep North Area test beams operational, but limit
-      use to no more than 2 at any time.  Reduce
-      maintenance to regular working hours.
-      Keep COMPASS operational until 2008 at least.
-      Keep NA48 beam line dormant; possibly move GIF to it.

## Fermilab Test Beams

- Meson Test Beam Facility   http://www-ppd.fnal.gov/mtbf-w
- ramberg@fnal.gov

- Meson Lab Experimental Area

## Meson Test Beam Facility

- Mtest – the western-most beamline in the Meson building.
-   User facilities: 6 areas – MT6A1 - 2  &  MT6B1 – 4.
-    Two locations are enclosed with A/C, etc.  Gases, data
-     and HV cables, trigger and DAQ are supported by the Lab.
-   Type of beam:  Secondaries from Main Injector 120 GeV
-     protons on an Al target at 0**o**.
-    Modes of operation:
-      “Proton”  ~1 MHz of 120 GeV protons.
-      “Pion”      ~50 kHz of 5 – 80 GeV secondaries (rate depends on E).
-                       e’s ~ 10-20%, ’s ~ 5%, ’s ~ 80%; neg. polarity poss.
-    Beam size: 1 cm**2 **
**  **Instrumentation: 80’ & 50’ Cerenkov counters; 0.5 & 1.0 mm beam
-      PWCs; etc.

## = Controlled access gate            

- = Enclosed climate control areas

- MT6 Test Beam User Areas

- = Controlled access gate

- = Concrete

- MT6-A1

- MT6-A2

- MT6-B1

- MT6-
-   B4

- MT6-B3

- MT6-C

- MT6-B2

- ALCOVE
- CONTROL
- ROOM

- COUNTING
- ROOM

- MAIN CONTROL ROOM

## Booster Radiation Damage Facility 

- Energy = 8 GeV.
- 3 E11- 4.5 E12 protons/1.6 s pulse, monitored with a toroid.
- Rep rate: 0.2 – 3 s depending on HEP demands.
- Circular beam size: FWHM = 1.2 cm measured with an MWPC.
- Temperature controlled box (e.g. 5**o**C).
- Motorized table.
- In a D0 test of Run 2 Si micro-strips a total dose of
-      2.1 Mrads (~7 E13 protons/cm2) was delivered to measure:
-      1.  depletion voltage
-      2.  Leakage current
-      3.  <noise>
-      4.  # of noisy channels, etc.

## Booster Radiation Damage Facility

- D0 forward disk Si micro-strip wedge detector

## Booster Radiation Damage Facility

## SLAC

## SLAC Final Focus Test Beam

- There are three possible modes of operation. All provide beam pulses ~ 6ps long at 1 - 30 Hz depending on the accelerator program:
- a) Low intensity electron or positron
-    Typical momentum range 5 - 20 GeV.
-    Up to a few x 10^3 particles per pulse, depending on
-        momentum.
-    Space presently available ~1 m to south of beam line, ~2 m to
-      north, ~1 m above and below, ~2m along beam line.

## SLAC  FFTB (cont.)

-      materials in vacuum or in some cases in air.
-      Momentum = 28.5 GeV
-      109 to 2x1010 per pulse (down to 107 under development).
-     Various possible experimental stations, all with substantial
-      space constraints.
- c) Bremsstrahlung beam
-      Peak energy 28.5 GeV
-      Radiator up to 0.02 Xo for 1010 /pulse electron beam
-      Electron beam pipe passes 30-35 cm below the gamma ray
-      beam at the experimental station.

## SLAC  FFTB (cont.)

- In all cases, when the beam is being delivered there is no physical access to the experimental equipment.
- Tests have also been carried out in recent years in End Station A, where however, the competing experimental program is very full, and it is harder to get time. A tagged Bremsstrahlung beam has been used, as has a very low intensity positive hadron beam. When space and time are available at all, there are usually few space constraints on test apparatus in End Station A.
- For further information, or possible extensions of the above specifications, contact the Test Beam Coordinator, Ted Fieguth fieguth@slac.stanford.edu

## More Test Beams around the World

- Argonne:  No test beams.
- Brookhaven:  No test beams.
- Cornell:  CHESS x-rays useful for some kinds of radiation damage studies.
- Daresbury: No test beams
- Frascati: 0.51 GeV e- beam from their 50 Hz linac; 1 – 1 E4 e’s/pulse.
- IHEP – Beijing:
- IHEP – Serpukhov:
- JINR:
- LAL Orsay: No test beams.
- Novosibirsk/BINP:
- RAL: No test beams.
- Saclay:  No test beams.
- TRIUMF:
- If you have information on test beams that  should be included in the
- LCWS2002 proceedings send it via E-mail to:
- hefisk@fnal.gov

## Summary

-   There are significant test beams at most of our laboratories.
-   Many of you at this meeting include plans to use these test
-    beams in your detector R&D.
-   Most of the facilities require attention by us to make them
-    more user friendly and applicable to our needs.
-   As hardware and software prototypes are developed, and
-     test beam results become available, they will have a
-     significant impact on the research tool we are building.
-    Studies are good; detectors based on tests are better!